CN100339318C - 从水流中除去砷的方法 - Google Patents

从水流中除去砷的方法 Download PDF

Info

Publication number
CN100339318C
CN100339318C CNB2004800030181A CN200480003018A CN100339318C CN 100339318 C CN100339318 C CN 100339318C CN B2004800030181 A CNB2004800030181 A CN B2004800030181A CN 200480003018 A CN200480003018 A CN 200480003018A CN 100339318 C CN100339318 C CN 100339318C
Authority
CN
China
Prior art keywords
arsenic
water
oxidation state
containing materials
oxidation
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CNB2004800030181A
Other languages
English (en)
Other versions
CN1745038A (zh
Inventor
理查德·D·威瑟姆
爱德华·B·麦克纽
约翰·L·伯巴三世
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Molycorp Minerals LLC
Original Assignee
Union Oil Company of California
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Union Oil Company of California filed Critical Union Oil Company of California
Publication of CN1745038A publication Critical patent/CN1745038A/zh
Application granted granted Critical
Publication of CN100339318C publication Critical patent/CN100339318C/zh
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
    • C02F1/5245—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents using basic salts, e.g. of aluminium and iron
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/28—Treatment of water, waste water, or sewage by sorption
    • C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/58—Treatment of water, waste water, or sewage by removing specified dissolved compounds
    • C02F1/62—Heavy metal compounds
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/72—Treatment of water, waste water, or sewage by oxidation
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/28—Treatment of water, waste water, or sewage by sorption
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/10—Inorganic compounds
    • C02F2101/103—Arsenic compounds
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2201/00—Apparatus for treatment of water, waste water or sewage
    • C02F2201/002—Construction details of the apparatus
    • C02F2201/006—Cartridges
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2305/00—Use of specific compounds during water treatment
    • C02F2305/12—Inert solids used as ballast for improving sedimentation
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00—Multistage treatment of water, waste water or sewage
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S210/00—Liquid purification or separation
    • Y10S210/902—Materials removed
    • Y10S210/911—Cumulative poison

Abstract

通过下述方法从水和其他含水物料中除去砷：(1)用含+4氧化态铈的化合物，优选二氧化铈处理物料，以将+3氧化态的砷氧化成+5氧化态的砷，和(2)通常通过使处理过的物料和氧化铝或含+3氧化态阳离子的其他沉淀剂接触，从水相中除去+5氧化态的砷。

Description

从水流中除去砷的方法
相关申请的交叉参考
本申请要求享有美国专利申请No.10/353,705(2003年1月29日提交)的优先权，并且成为美国部分连续(CIP)专利申请，其整体内容通过引用并入本文。
背景技术
本发明主要涉及从水流中除去砷的方法、组合物和装置，具体涉及使用+4氧化态铈使砷氧化以使其能够从水中沉淀出来，从而从地下水和饮用水中除去砷的方法、组合物和装置。
砷是以各种组合形式天然存在于地表的有毒元素。例如，其在天然水中的存在可以源自地球化学反应、工业废物排放和过去含砷杀虫剂的农业应用。由于高水平砷的存在会对生命体具有致癌作用和其他有害作用，因此美国环保局(EPA)和世界卫生组织已规定饮用水中砷的最大污染水平(MCL)为每10亿份中含10份(ppb)。废水、地下水、地表水和地热水中的砷浓度经常超过该水平。因此，当前的MCL和可低至2.0ppb的任何未来MCL的降低产生了对从饮用水、井水和工业用水中经济有效地除去砷的新技术的需求。
砷存在有四种氧化态或价态，即-3、0、+3和+5。在正常情况下，发现+3和+5氧化态的砷，通常以亚砷酸盐(AsO2 -1)和砷酸盐(AsO4 -3)的形式溶解于含水或水生体系中。通过混凝(coagulation)技术有效地除去砷需要砷为砷酸盐形式。砷以+3氧化态存在的亚砷酸盐仅能通过吸附混凝技术部分除去，这是因为其主要形式亚砷酸(HAsO2)是弱酸，在最有效发生吸附的pH5-pH8条件下它仍保持非离子化状态。
过去已使用了多种技术来从含水体系中除去砷。这些技术的实例包括在高表面积材料如氧化铝和活性碳上的吸附、使用阴离子交换树脂的离子交换、共沉淀和电渗析。但是，大多数除砷技术都由于除去亚砷酸盐的困难而受阻。已经用于大型市政供水的更成功技术对于住宅应用来说不实用，因为需要大的空间和使用危险化学品。用于住宅水处理的两种最常见的技术是反渗透和活化氧化铝。前一方法产生必须加以处理的含砷废水流，后一方法需要使用腐蚀性化学品。
结合上述事实和将MCL降低至2-10ppb的可能性，有必要开发从水和其他含水体系中除去砷的有效方法、组合物和装置。
发明内容
根据本发明，目前已发现通过下述方法可以高效地从水和其他含水物料中除去砷：用含+4氧化态铈的化合物，优选二氧化铈(CeO2)处理含砷的水物料，以将砷氧化，从而使其更易于通过沉淀法从处理过的含水物料中除去，从而生成砷浓度减小的净化含水液体。本文所用的“沉淀法”不仅包括除去不可溶物质形式的含砷离子，还包括将含砷离子固定在不溶性颗粒之上或内部。在本发明方法的一个实施方案中，使含有溶解的+3和+5氧化态砷的水或其他含水液体与二氧化铈接触，以将+3氧化态的砷氧化成+5氧化态的砷，并使该液体接触与+5氧化态的砷反应的沉淀剂，以产生不溶性砷化合物和砷含量减小的含水液体，从而从含水液体中除去+5氧化态的砷。
通常，氧化的砷为+5氧化态，以砷酸盐(AsO4 -3)的形式溶解于水或其他含水液体中。用于从含水液体中除去氧化的砷的沉淀剂可以是与砷酸盐或其他形式的氧化的砷反应产生不溶性砷化合物的任意物质。例如，沉淀剂可以是在+4氧化态铈被还原时的砷氧化步骤中产生的+3氧化态铈。作为选择，沉淀剂可以是含+3氧化态阳离子的任意颗粒固体，如氧化铝、铝硅酸盐、离子交换树脂和粘土。
氧化和沉淀步骤可以在同一或分隔的区中进行。如果这些步骤在同一区中进行，则含+4氧化态铈的化合物通常与沉淀剂混合。虽然该混合物可以通过将铈化合物负载在沉淀固体的表面上和/或微孔中而制造，但是通常优选的是将颗粒形式的铈化合物与沉淀剂颗粒物理混合。本发明的优选组合物包括二氧化铈和氧化铝的混合物。
在本发明方法的一个优选实施方案中，所述的处理所述含水物料和所述的除去所述氧化的砷都发生在所述的氧化区中，具体而言，使含砷酸盐和亚砷酸盐形式的溶解砷的含水液体与二氧化铈颗粒和氧化铝颗粒的混合物在氧化区中接触，从而使二氧化铈将亚砷酸盐氧化成砷酸盐，并使氧化铝与砷酸盐反应以形成吸附在氧化铝颗粒上的不溶性砷酸铝。流出氧化区的含水溶液所含砷的浓度大大减小，通常小于约2.0ppb。
具体实施方式
虽然本发明的方法主要设想用于从饮用水和地下水中除去溶解的砷，但是可以理解：该方法可以用来处理砷含量不合需要的任何含水液体物料。这些液体物料的实例尤其包括井水、地表水诸如来自湖泊、池塘和湿地的水、农业用水、来自工业生产过程的废水和地热流体。含砷物料还可以包含其他无机污染物，如硒、镉、铅和汞，以及某些有机污染物。通常，本发明的方法可用来处理砷含量大于2.0ppb的任何含水液体物料，并且可以有效地处理砷含量大于500ppb的物料。该方法可有效地将这些物料中的砷水平降至5.0ppb以下，通常是2.0ppb以下。
污染含水物料的砷通常溶解于水相，且通常以分别为亚砷酸盐(AsO2 -1)和砷酸盐(AsO4 -3)的+3和+5氧化态存在。除去砷酸盐的技术是现有的，并且是相当有效的，但是除去亚砷酸盐比较困难，这是因为用于此目的的现有技术都不是很有效。已经发现：通过用+4氧化态铈处理含水物料，可以容易地将基本上所有溶解的亚砷酸盐氧化成砷酸盐，所得的砷酸盐和原本就存在于含水物料中的砷酸盐一起从处理过的物料中沉淀出来，从而产生砷减少的含水液体。
在本发明的方法中，将被砷污染的含水物料在通常为使物料中的水保持为液态的环境温度和环境压力下，通过进口进入氧化容器。如果物料被颗粒固体污染，那么通常在进入氧化容器之前进行处理以除去该固体。可以采用诸如过滤、离心和水力旋流的任何液-固分离技术除去颗粒固体。
在氧化容器中，使含水物料与含+4氧化态铈(下文中称作铈+4)的化合物接触，其中Ce+4是极强的氧化剂，可以将任何亚砷酸盐或以+3氧化态存在的其他砷氧化成砷酸盐或含有+5氧化态砷的其他物质。然后通过将氧化的含水物料与沉淀剂接触，使所有含+5氧化态砷的砷物质从水相中沉淀出来。
氧化剂可以是含+4氧化态铈的任何固体或液体。虽然通常优选使用不溶于水、较耐磨的二氧化铈固体颗粒作为氧化剂，但也可使用水溶性的铈化合物。这些化合物的实例包括硝酸高铈铵、硫酸高铈铵、硫酸高铈和硝酸高铈。
与含+5氧化态砷的砷酸盐反应形成不溶性砷化合物的沉淀剂可以和铈4+化合物共存于氧化容器中，从而使沉淀和氧化基本上同时发生。作为选择，可将沉淀剂置于经处理的液体离开氧化容器后所进入的分离容器中。简单起见，铈化合物和沉淀剂通常都优选共存于氧化容器中。本发明的该实施方案不需要额外容器，因此降低了本发明方法的安装和操作成本。
虽然沉淀剂可以是与含+5氧化态砷的砷酸盐或其他物质反应形成不溶性砷化合物的任何固体或液体材料，，但通常是含有+3氧化态阳离子的颗粒固体，所述的阳离子与砷酸盐反应形成不溶性砷酸盐化合物。含+3氧化态阳离子的这些固体的实例包括氧化铝、γ-氧化铝、活化氧化铝、酸化氧化铝如经盐酸处理的氧化铝、含不稳定阴离子的金属氧化物如氯氧化铝、结晶铝硅酸盐如沸石、无定形二氧化硅-氧化铝、离子交换树脂、粘土如蒙脱土、硫酸铁、多孔陶瓷和含+3氧化态铈的铈化合物如碳酸铈。优选地，所述的砷沉淀剂包括颗粒固体，其含有选自氧化铝、离子交换树脂、结晶铝硅酸盐、粘土和多孔陶瓷的+3氧化态阳离子。虽然可以将氧化镧和其他稀土化合物用作沉淀剂，但在本发明方法中通常不采用这些材料(当然除铈化合物之外)，这是因为优选使用具有比稀土化合物更小的Ksp的沉淀剂。因此，在本发明方法的一个优选实施方案中，所述的处理所述含水物料和所述的除去所述氧化的砷在基本不存在镧的条件下进行。
如上所述，通常优选的是，铈+4化合物和沉淀剂共存于氧化容器中，从而使砷的氧化和沉淀在同一容器中基本同时进行。虽然铈+4化合物和沉淀剂都可以是水溶性的，但通常优选铈+4化合物和沉淀剂都是不溶于水的颗粒固体，其在氧化容器中与含水物料形成悬浮液，或在氧化步骤期间一起物理混合在含水物料所流经的固定床中。在本发明的可供选择的实施方案中，铈+4化合物可以沉淀在固体沉淀剂的表面和/或微孔中。该实施方案通常并不优于物理混合物，因为将铈化合物负载在沉淀固体上或内部需要将铈化合物溶解于液体中，然后将所得溶液与负载固体混合，并干燥该湿固体。这些步骤明显增加了实施本发明方法的成本。因此，本发明还提供一种组合物，其包含二氧化铈CeO2和颗粒固体的混合物，其中所述的二氧化铈不负载在所述的颗粒固体上。在一个实施方案中，所述组合物基本不含镧。在另一个实施方案中，所述组合物基本不含铈以外的所有稀土元素。
通常，足量的铈+4化合物和颗粒沉淀剂一起存在于氧化容器中，从而使二者的混合物含有约8-60重量％的铈+4化合物，以氧化物计。优选的是，所述混合物含有约10-50重量％，更优选约20-30重量％的铈+4化合物，以氧化物计。但是，在某些情况下，会需要混合物含有40-45重量％以上的铈+4化合物，以氧化物计。
不论铈+4化合物是与颗粒沉淀剂一起混合在氧化容器中，或是负载在沉淀剂之上或内部，该固体的直径通常为约0.25-1.5毫米，优选为0.5-1.0毫米。当铈+4化合物和沉淀剂存在于作为固定床的氧化区时，通常优选颗粒为球形，以使含水物料经过床的流动均匀分布。但是，如果需要的话，颗粒可以是包括压出物形状的其他形状。这些压出物的长度通常为约0.2-约3.0毫米。
在本发明方法的氧化步骤中，含水物料中的亚砷酸盐根据下列方程式氧化成砷酸盐：
                Ce+4+AsO2 -1→Ce+3+AsO4 -3
当铈+4化合物氧化亚砷酸盐时，其自身被还原成+3氧化态的铈，然后与氧化步骤中形成的砷酸盐反应生成不溶性的砷酸铈，如下列方程式所示：
                Ce+3+AsO4 -3→CeAsO4(固体)
虽然理论上有足量的由铈+4还原形成的铈+3和氧化反应中形成的所有砷酸盐反应以沉淀砷酸盐，但通常优选存在额外的沉淀剂。使可以是含铈+3的化合物的沉淀剂与任何未反应的砷酸盐反应以形成不溶性的沉淀物，将该沉淀物从含水物料中除去，以产生所需的砷减少的含水液体。
发生在氧化容器中的氧化步骤通常在环境压力、约4℃-100℃、优选约5℃-40℃的温度下以及pH大于约3.0的条件下进行。含水物料在氧化容器中的停留时间通常为约2.0-约30分钟。当铈+4化合物和砷沉淀剂均为固体颗粒并一起作为氧化容器中的固定床存在时，沉淀的砷化合物将被沉淀剂的固体颗粒吸附，或通过其他方式与之结合，从而使流出氧化容器的含水液体基本不含固体并几乎不含砷，砷含量通常小于约10ppb，绝大多数情况下小于2.0ppb。如果沉淀剂不在氧化容器中，则使来自容器的流出物流到另一容器，在此单独用砷沉淀剂加以处理。最后，如果铈+4化合物和沉淀剂是与氧化容器中的含水物料形成悬浮液的颗粒固体，则通常处理来自容器的流出物以将固体从砷减少的液体中分离，所述的固体包括容器中形成的不溶性砷化合物。虽然分离可以在能够从液体中除去颗粒的任何类型装置中进行，但通常采用过滤系统进行。
如果本发明方法的含水物料含有除砷以外的必须除去以生成所需净化的含水产物的其他污染物，则这些污染物的去除通常在氧化步骤之前或之后进行。如果其他污染物干扰砷的氧化，则它们应该在氧化步骤之前除去。在某些情况下，本发明的方法对于从含水物料中除去砷和其他污染物或砷以外的其他污染物而言也是有效的。
在本发明的优选实施方案中，使用带有滤筒或滤器的砷净化装置来处理住宅饮用水。处理装置可以是带有含本发明组合物的过滤器装置或设计来配置在水槽下方的滤筒型装置的自立式容器。这些装置的安置应使进入家庭或商业场所的水在进入水槽龙头之前流经滤器或滤筒。该滤器和滤筒装置非常简单，包括入口，其与饮用水源相连；滤器或滤筒，其含有铈+4氧化剂，所述氧化剂通常为固定床形式并与砷沉淀剂形成混合物；和出口，其与水槽龙头相通，以将流出滤筒或滤器的砷减少的饮用水引向龙头的入口。作为选择，滤筒或滤器型装置可以设计来配置在龙头上，从而使流出龙头的水在使用之前流经滤筒或滤器装置。
在滤器或滤筒中，+3氧化态的砷被氧化成+5氧化态的砷，并且基本上所有存在的溶解的砷+5都与+3氧化态铈和砷沉淀剂反应，形成吸附到固定床固体上的不溶性砷化合物。沉淀剂优选为氧化铝或者离子交换树脂。流出固定床和滤筒或滤器装置出口的流出物的砷浓度通常小于约2.0ppb。在一个滤筒或滤器装置中的固定床被砷饱和后，将滤筒或滤器更换为具有相同或相似设计的新的滤筒或滤器。然后将用过的滤筒或滤器以法律上许可的方式加以处理。
在另一个实施方案中，本发明的方法用在社区水处理设施中，以在将水分配到当地家庭和商业区之前从饮用水中除去砷。对于这种应用，铈+4氧化剂通常以悬浮液形式或固定床形式存在于大型储水池中，从而可以以连续或间歇方式处理较大量的含砷水。砷沉淀剂可以和铈+4氧化剂共存于储水池中，或存在于由来自储水池的流出物进料的单独容器中。该过程流出的水的砷浓度通常小于约10ppb，一般小于5.0ppb，优选小于2.0ppb。
下面的实施例进一步说明了本发明的性质和目的，其只是说明性的，并不如权利要求书那样限定本发明。该实施例表明使用二氧化铈可以将+3和+5氧化态的砷从水中完全除去。
实施例
通过将检验合格的+3和+5氧化态砷标准溶液和不含砷的自来水混合，制备测试溶液来模拟含砷地下水。将20克氧化镧(La2O3)、20克二氧化铈(CeO2)和10克氧化镧与10克二氧化铈的混合物分别装入密封的100毫升玻璃容器中，并与约96毫升含100ppb砷+3、100ppb砷+5和均为50ppb的砷+3与砷+5的测试溶液形成悬浮液。将所得的悬浮液用具有Taflon涂层的磁力搅拌棒搅拌15分钟。搅拌后，通过Whatman#41滤纸过滤使自来水与固体分离，并将自来水密封在125毫升塑料样品瓶中。然后将该瓶送到合格的饮用水分析实验室，在那里通过石墨炉原子吸收光谱测定每个样品中的砷含量。测试结果如表1所示。
                                    表1
  测试号     测试前水中的砷   成浆材料百分数  测试后水中的砷ppb  除砷百分数
    ppbAs+3     ppbAs+5
    12345678     05050505010000     05050505001000     00100％La2O3100％CeO250％La2O350％CeO250％La2O350％CeO250％La2O350％CeO250％La2O350％CeO2     01004500000     NA055100100100100NA
表中测试3的数据表明：当只使用氧化镧时，只除去了掺杂砷的自来水中存在的55％的砷。由于含砷+5的砷酸镧的溶解性非常小，因此认为保留在溶液中的砷主要是亚砷酸盐形式的砷+3。另一方面，测试4的结果表明二氧化铈可以从水中除去所有的砷。这些结果的不一致是由于铈在二氧化铈中以+4氧化态存在，并且其是强氧化剂，而氧化镧中以+3氧化态存在的镧不是氧化剂。虽然镧+3与+5氧化态的砷反应，使之从水中沉淀，但是镧不与+3氧化态的砷反应。二氧化铈中的铈将砷+3氧化成砷+5，然后砷+5与铈+4还原所形成的铈+3反应从而沉淀所有溶解在水中的砷。测试5-7表明二氧化铈和氧化镧的等量混合物也可以从自来水中有效除去所有的砷。
本申请公开了通过下述方法从水和其他含水物料中除去砷：(1)用含+4氧化态铈的化合物，优选二氧化铈处理物料，以将+3氧化态砷氧化成+5氧化态砷，和(2)通常通过使处理过的物料与含+3氧化态阳离子的氧化铝或其他沉淀剂接触，从水相中除去+5氧化态的砷。
虽然本发明是参照本发明的几个实施方案进行描述的，但显然根据上文的描述进行许多更改、改进和变化对于本领域的技术人员来说是显而易见的。因此，本发明还包括在不背离所附权利要求的实质和范围的条件下所做的所有更改、改进和变化。
申请人现在或将来有权要求保护或不要求保护本文所公开的任意特征、特征组合或特征亚组合。
本发明中所列的所有数值和定量测定值(包括说明书、权利要求书、摘要、附图和任何附录中的)都是近似值。
在不存在本文未具体公开或要求保护的任何要素的情况下，可适合实施本文中说明性公开或要求保护的发明。因此，本发明可以包括本文公开或要求保护的要素，由本文公开或要求保护的要素组成或基本上由本文公开或要求保护的要素组成。
所附权利要求具有与本申请相一致的尽可能宽的范围。权利要求没有必要局限于优选的实施方案或实施例中所示的实施方案。
本申请中引用或参考的所有专利、优先提交的专利申请和任何其他文献和印刷物都整体通过引用并入本文。

Claims (44)

1.一种从含水物料中除去砷的方法，包括：
用含有足量铈的化合物处理所述含水物料，以氧化所述的砷；和
从所述处理过的含水物料中除去所述氧化的砷。
2.权利要求1所述的方法，其中所述足量的铈是+4氧化态，以氧化所述砷，从而将所述铈还原为+3氧化态；和其中所述的从所述处理过的含水物料中除去所述氧化的砷，是通过所述含水物料与颗粒状砷沉淀剂接触来形成与所述含水物料相比砷浓度减小的含水液体，所述砷沉淀剂含有与所述氧化的砷反应形成不溶性砷化合物的离子。
3.权利要求2所述的方法，其中所述含+4氧化态铈的化合物负载在所述颗粒状砷沉淀剂上。
4.权利要求2所述的方法，其中所述含+4氧化态铈的化合物与所述颗粒状砷沉淀剂混合。
5.权利要求2所述的方法，其中所述颗粒状砷沉淀剂包含氧化铝。
6.权利要求4所述的方法，其中所述含+4氧化态铈的化合物与所述颗粒状砷沉淀剂的组合包含作为氧化物计算的10重量％-50重量％的所述含+4氧化态铈的化合物。
7.一种从含水物料中除去砷的方法，包括下述步骤：
用含足量+4氧化态铈的化合物处理氧化区中的所述含水物料，以氧化所述砷，从而将所述铈还原为+3氧化态；和
从所述处理过的含水物料中通过沉淀法除去所述氧化的砷，以形成与所述含水物料相比砷浓度减小的净化含水液体。
8.权利要求7所述的方法，其中所述含水物料中的+3氧化态砷在所述的氧化区中被氧化成+5氧化态的砷。
9.权利要求8所述的方法，其中所述含水物料中的亚砷酸盐AsO2 -1在所述氧化区中被氧化成砷酸盐AsO4 -3。
10.权利要求7所述的方法，其中所述的含铈化合物是颗粒固体。
11.权利要求10所述的方法，其中所述的含铈化合物包括二氧化铈CeO2。
12.权利要求7所述的方法，其中所述的处理所述含水物料和所述的除去所述氧化的砷都发生在所述氧化区中。
13.权利要求9所述的方法，其中通过使所述的砷酸盐AsO4 -3与所述的+3氧化态铈反应产生不溶性的砷酸铈，而将所述砷酸盐从所述的含水物料中除去。
14.权利要求7所述的方法，其中通过使所述的含水物料和含有与所述氧化的砷反应形成不溶性砷化合物的离子的砷沉淀剂接触，而将所述氧化的砷从所述的含水物料中除去。
15.权利要求14所述的方法，其中所述的砷沉淀剂包括颗粒固体，其含有选自氧化铝、离子交换树脂、结晶铝硅酸盐、粘土和多孔陶瓷的+3氧化态阳离子。
16.权利要求15所述的方法，其中所述的处理所述含水物料和所述的除去所述氧化的砷都发生在所述的氧化区中。
17.权利要求14所述的方法，其中含+3氧化态阳离子的所述砷沉淀剂与含+4氧化态铈的所述铈化合物共存于所述的氧化区中。
18.权利要求7所述的方法，其中所述的处理所述含水物料和所述的除去所述氧化的砷在不存在镧的条件下进行。
19.权利要求7所述的方法，其中处理所述含水物料于5℃-40℃的温度下在所述氧化区中进行。
20.权利要求7所述的方法，其中所述的含水物料选自地下水、饮用水、工业废水、农业用水、湖水、湿地水和地热水。
21.权利要求7所述的方法，其中所述净化的含水液体中的砷浓度小于10ppb。
22.权利要求10所述的方法，其中所述的含铈颗粒固体以固定床或悬浮体的形式存在于所述的氧化区中。
23.一种从含水物料中除去砷的方法，包括下述步骤：
用二氧化铈CeO2在氧化区中处理所述的含水物料，以将氧化态小于+5的砷氧化成+5氧化态的砷；和
通过使所述氧化区中的所述处理过的物料和与所述+5氧化态砷反应形成不溶性砷化合物的颗粒固体接触，来从所述处理过的含水物料中除去+5氧化态砷，从而形成与所述含水物料相比砷浓度减小的净化含水液体。
24.权利要求23所述的方法，其中所述的二氧化铈CeO2负载在所述的颗粒固体上。
25.权利要求23所述的方法，其中所述的二氧化铈CeO2与所述的颗粒固体混合。
26.权利要求23所述的方法，其中亚砷酸盐AsO2 -1形式的+3氧化态砷在所述氧化区中被氧化成砷酸盐AsO4 -3形式的+5氧化态砷。
27.权利要求26所述的方法，其中所述的颗粒固体包含氧化铝。
28.权利要求23所述的方法，其中所述的处理所述含水物料和所述的除去砷在不存在镧的条件下进行。
29.权利要求25所述的方法，其中所述二氧化铈CeO2和所述颗粒固体的组合含有10重量％-50重量％的二氧化铈CeO2，以氧化物计。
30.权利要求23所述的方法，其中所述净化的含水液体中砷的浓度小于2.0ppb。
31.一种组合物，其包含二氧化铈CeO2和颗粒固体的混合物，其中所述的二氧化铈不负载在所述的颗粒固体上。
32.权利要求31所述的组合物，其中所述颗粒固体含有+3氧化态的阳离子。
33.权利要求32所述的组合物，其中所述的颗粒固体包含氧化铝。
34.权利要求33所述的组合物，其不含镧。
35.权利要求33所述的组合物，其不含铈以外的所有稀土元素。
36.权利要求33所述的组合物，其中所述混合物中的所述颗粒固体直径为0.5-1.0毫米。
37.一种从饮用水中除去砷的装置，包括：
入口，其与所述饮用水源相通；
容器，其含有二氧化铈CeO2，并与所述入口相通；和
出口，其与所述容器相通。
38.权利要求37所述的装置，其中所述含有二氧化铈CeO2的容器还包括：
入口部分和出口部分，所述的入口部分与所述入口相通；和
出口，其与所述容器的所述出口部分相通。
39.权利要求38所述的装置，其中所述的容器含有与颗粒固体结合的二氧化铈CeO2，所述的颗粒固体与+5氧化态砷反应形成不溶性砷化合物。
40.权利要求39所述的装置，其中所述的容器包括含所述二氧化铈CeO2的滤筒，并且所述的装置设计用来配置在水槽下面或龙头的出口之上。
41.权利要求39所述的装置，其中所述的容器包括含所述二氧化铈CeO2的槽。
42.权利要求41所述的装置，其中含有固体的容器包括含+4氧化态铈的化合物与颗粒状砷沉淀剂，所述颗粒状砷沉淀剂与+5氧化态的砷反应形成不溶性砷化合物，其中所述容器具有进口部分和出口部分并且所述进口部分与所述入口相通；和出口，其与所述容器的出口部分相通。
43.权利要求42所述的装置，其中所述含+4氧化态铈的化合物包含二氧化铈CeO2。
44.权利要求43所述的装置，其中所述容器包含含有所述二氧化铈CeO2的筒或滤器，并且所述装置设计为装配在水槽下方或龙头出口上。
CNB2004800030181A 2003-01-29 2004-01-28 从水流中除去砷的方法 Expired - Fee Related CN100339318C (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/353,705 2003-01-29
US10/353,705 US6863825B2 (en) 2003-01-29 2003-01-29 Process for removing arsenic from aqueous streams

Publications (2)

Publication Number Publication Date
CN1745038A CN1745038A (zh) 2006-03-08
CN100339318C true CN100339318C (zh) 2007-09-26

Family

ID=32736246

Family Applications (1)

Application Number Title Priority Date Filing Date
CNB2004800030181A Expired - Fee Related CN100339318C (zh) 2003-01-29 2004-01-28 从水流中除去砷的方法

Country Status (6)

Country Link
US (5) US6863825B2 (zh)
EP (2) EP2218686A1 (zh)
CN (1) CN100339318C (zh)
AU (3) AU2004207832B2 (zh)
MX (1) MXPA05007988A (zh)
WO (1) WO2004067452A1 (zh)

Families Citing this family (43)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6863825B2 (en) * 2003-01-29 2005-03-08 Union Oil Company Of California Process for removing arsenic from aqueous streams
US7335307B2 (en) * 2003-11-03 2008-02-26 U.S. Epa Method for removing contaminants from water using ruthenium based contaminant sorbents and oxidizers
EP1736236A4 (en) * 2004-07-26 2007-05-02 Kurita Water Ind Ltd ANION ADSORBENT, METHOD OF MANUFACTURING THE SAME, AND METHOD OF TREATING WATER
US7491335B2 (en) * 2005-05-13 2009-02-17 The Board Of Regents Of The University Of Texas System Removal of arsenic from water with oxidized metal coated pumice
US7338603B1 (en) * 2005-07-27 2008-03-04 Molycorp, Inc. Process using rare earths to remove oxyanions from aqueous streams
WO2008118228A2 (en) * 2006-12-05 2008-10-02 Stonybrook Water Purification Articles comprising a fibrous support
US8066874B2 (en) * 2006-12-28 2011-11-29 Molycorp Minerals, Llc Apparatus for treating a flow of an aqueous solution containing arsenic
US20120138529A1 (en) * 2006-12-28 2012-06-07 Molycorp Minerals, Llc Method and apparatus for recovering a metal and separating arsenic from an arsenic containing solution
AP2009004926A0 (en) * 2006-12-28 2009-08-31 Molycorp Minerals Llc Method and apparatus for removing arsenic from an arsenic bearing material
EA200970645A1 (ru) * 2006-12-28 2010-02-26 МОЛИКОРП МИНЕРАЛЗ, ЭлЭлСи Способ и устройство для удаления мышьяка из раствора
US8252087B2 (en) 2007-10-31 2012-08-28 Molycorp Minerals, Llc Process and apparatus for treating a gas containing a contaminant
US20090107925A1 (en) * 2007-10-31 2009-04-30 Chevron U.S.A. Inc. Apparatus and process for treating an aqueous solution containing biological contaminants
US8349764B2 (en) 2007-10-31 2013-01-08 Molycorp Minerals, Llc Composition for treating a fluid
US20090107919A1 (en) * 2007-10-31 2009-04-30 Chevron U.S.A. Inc. Apparatus and process for treating an aqueous solution containing chemical contaminants
US8358070B2 (en) * 2007-12-06 2013-01-22 General Electric Company Lanthanide oxide as an oxygen dispenser in a metal halide lamp
WO2010056742A1 (en) * 2008-11-11 2010-05-20 Molycorp Minerals Llc Target material removal using rare earth metals
US20100155330A1 (en) * 2008-11-11 2010-06-24 Molycorp Minerals, Llc Target material removal using rare earth metals
TW201038510A (en) * 2009-03-16 2010-11-01 Molycorp Minerals Llc Porous and durable ceramic filter monolith coated with a rare earth for removing contaminates from water
AU2010233100A1 (en) * 2009-04-09 2011-11-03 Molycorp Minerals Llc Use of a rare earth for the removal of antimony and bismuth
BRPI1015574A2 (pt) * 2009-07-06 2019-09-24 Halosource Inc sistema de duplo polímero para recuperação de águas e de separação de sólidos em suspensão em meios aquosos.
EP2499679A4 (en) * 2009-11-09 2014-01-01 Molycorp Minerals Llc REMOVAL OF STAINING FROM RARE EARTH
WO2012013220A1 (en) * 2010-07-27 2012-02-02 Siemens Aktiengesellschaft Adsorbent for removing arsenic from an aqueous solution
JP2013542908A (ja) * 2010-10-01 2013-11-28 サン−ゴバン セラミックス アンド プラスティクス，インコーポレイティド 多相アルミナ粒子
US20130186836A1 (en) * 2010-10-05 2013-07-25 Bio-Works Company Limited Method For Removing Arsenic From Water Using Polymer Based Matrices With Chelating Groups Comprising Metal Ions
US20120234769A1 (en) * 2011-03-14 2012-09-20 Steven Bittenson Systems and methods for treating fluid media using nonthermal plasmas
CN102167457A (zh) * 2011-03-17 2011-08-31 天津大学 氯氧化铁盐混凝微滤联合除砷方法
BR112013026251A2 (pt) * 2011-04-13 2020-11-10 Molycorp Minerals Llc método de remoção de terras raras de espécies hidratadas e de hidroxila e composição
US9233863B2 (en) 2011-04-13 2016-01-12 Molycorp Minerals, Llc Rare earth removal of hydrated and hydroxyl species
US8828235B2 (en) 2011-08-22 2014-09-09 Monmouth University Method for removing contaminants from water using thiol-modified surfaces containing ester linkages
US9663369B2 (en) * 2011-12-16 2017-05-30 International Business Machines Corporation Cerium (IV) salts as effective dopant for carbon nanotubes and graphene
CN103505906B (zh) * 2013-09-30 2015-07-08 正大青春宝药业有限公司 一种降低中药水提物中砷盐负荷的方法
CA2880395C (en) 2014-01-31 2017-03-07 Marcus Tomlinson Process for separation of at least one metal sulfide from a mixed sulfide ore or concentrate
US9975787B2 (en) * 2014-03-07 2018-05-22 Secure Natural Resources Llc Removal of arsenic from aqueous streams with cerium (IV) oxide compositions
WO2016024290A1 (en) 2014-08-12 2016-02-18 Council Of Scientific & Industrial Research A process for the detection and adsorption of arsenic
WO2018087552A1 (en) 2016-11-10 2018-05-17 Mexichem Fluor S.A. De C.V. Process for reducing the concentration of arsenic in an aqueous solution comprising a fluoroacid
US10384191B2 (en) 2017-04-19 2019-08-20 King Abdulaziz University Star-shape nanoparticle and a method of using thereof to detect arsenic in a solution
CN109111048A (zh) * 2018-09-28 2019-01-01 章嘉华 一种工业重金属废水的处理系统
CN109111049A (zh) * 2018-09-28 2019-01-01 章嘉华 一种工业重金属废水的处理方法
CN109205935B (zh) * 2018-09-28 2021-08-20 上海泽耀环保科技有限公司 河道排水口污水截流处理的人工湿地
CN111943434A (zh) * 2020-08-11 2020-11-17 湖南艾布鲁环保科技股份有限公司 一种微污染饮用水水源生物生态修复系统及方法
CN112390337B (zh) * 2020-10-30 2022-01-28 西南科技大学 一种改性蒙脱土的制备方法、产品及其应用
KR20230170044A (ko) * 2021-04-09 2023-12-18 네오 워터 트리트먼트 엘엘씨 수성 스트림으로부터 오염물질을 제거하기 위한 이온이 결합된 유기 토양 개량제
CN115215499A (zh) * 2022-07-18 2022-10-21 北京师范大学 一种家用式多效陶瓷净水器及其制作方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3916585A (en) * 1973-10-24 1975-11-04 Norton Co Sintered abrasive containing oxides from the system ceria, alumina, zirconia
CN1155519A (zh) * 1996-01-16 1997-07-30 三菱重工业株式会社 处理含砷废水的方法

Family Cites Families (538)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US155303A (en) * 1874-09-22 Improvement in oscillating engines
US3116A (en) * 1843-06-01 Machine for bending sheet or plate iron
US748860A (en) * 1904-01-05 End-gate
US159179A (en) * 1875-01-26 Improvement in gas-machines
US1739840A (en) 1924-08-14 1929-12-17 Kendall Sydney Wilmer Proofing cellulosic, animal, and other substances against insects, animals, and organisms
US2872286A (en) * 1945-08-31 1959-02-03 Theron G Finzel Bismuth phosphate carrier process for pu recovery
US2567661A (en) 1948-08-31 1951-09-11 John A Ayres Zirconium and hafnium recovery and purification process
US2564241A (en) 1949-05-12 1951-08-14 James C Warf Extraction process for cerium
US2647858A (en) 1950-08-23 1953-08-04 Socony Vacuum Oil Co Inc Oil decolorization method
US2847332A (en) 1955-09-07 1958-08-12 Union Carbide Corp Method for introducing metallic silver in carbon with uniform distribution
US3194629A (en) 1962-02-23 1965-07-13 Pittsburgh Activated Carbon Co Method of removing mercury vapor from gases
GB1053030A (zh) 1963-03-21
US3385915A (en) 1966-09-02 1968-05-28 Union Carbide Corp Process for producing metal oxide fibers, textiles and shapes
DE1299567B (de) * 1964-01-03 1969-07-17 Hoechst Ag Verfahren zum Reinigen von Abwaessern
DE1517730C3 (de) 1964-06-30 1975-03-13 Erhardt Dr. 6230 Frankfurt Baer Verfahren zur Reinigung von Wässern
US3658724A (en) 1967-08-01 1972-04-25 Du Pont Adsorbent oxidation catalyst
US3956118A (en) 1968-05-23 1976-05-11 Rockwell International Corporation Removal of phosphate from waste water
US3768989A (en) 1968-08-19 1973-10-30 N Goetzinger Process for the preparation of a rare earth oxide polishing composition
US3575853A (en) * 1968-12-24 1971-04-20 Lab Betz Inc Waste water treatment
US3761571A (en) 1970-02-10 1973-09-25 Atomic Energy Authority Uk Production of ceria
US3753686A (en) 1970-07-16 1973-08-21 Kennecott Copper Corp Recovery of copper, nickel, cobalt and molybdenum from complex ores
US3617569A (en) 1970-07-31 1971-11-02 Dow Chemical Co Removal of phosphate from waste water
US3736255A (en) * 1970-10-01 1973-05-29 North American Rockwell Water decolorization
US3692671A (en) 1970-10-01 1972-09-19 North American Rockwell Rare earth ion removal from waste water
SE360986B (zh) 1971-02-23 1973-10-15 Boliden Ab
US3865728A (en) 1971-11-12 1975-02-11 Dow Corning Algicidal surface
DE2205546C2 (de) 1972-02-05 1973-12-13 Voith Getriebe Kg Schaltbare Zahnkupplung fur ein Stufen oder ein Wendeschaltgetnebe
DE2230714C3 (de) 1972-06-23 1983-12-08 Wiederaufarbeitungsanlage Karlsruhe Betriebsgesellschaft mbH, 7514 Eggenstein-Leopoldshafen Vorrichtung zum kontinuierlichen Behandeln von Flüssigkeiten
US3965118A (en) 1972-07-21 1976-06-22 The Upjohn Company Lactone intermediates
US4054516A (en) 1974-03-04 1977-10-18 Director-General Of The Agency Of Industrial Science And Technology Method for selectively capturing metal ions
US4001375A (en) * 1974-08-21 1977-01-04 Exxon Research And Engineering Company Process for the desulfurization of flue gas
FI50607C (fi) 1975-01-09 1976-05-10 Valo Antti T Laite tukkien erottelemiseksi tukkinipuista.
DE2515861A1 (de) * 1975-04-11 1976-10-28 Norddeutsche Affinerie Verfahren zur adsorptiven entfernung von arsen, antimon und/oder wismut
DE2656803C2 (de) 1975-12-18 1986-12-18 Institut Français du Pétrole, Rueil-Malmaison, Hauts-de-Seine Verfahren zur Entfernung von in einem Gas oder in einer Flüssigkeit vorhandenem Quecksilber
US4088754A (en) 1976-03-02 1978-05-09 Research Corporation Water-soluble cerium (cerous) salts in burn therapy
US4096064A (en) 1976-04-05 1978-06-20 Ameron, Inc. System for removal of toxic heavy metals from drinking water
US4059520A (en) 1976-06-01 1977-11-22 Eastman Kodak Company Apparatus for filtering and heating a liquid
US4078058A (en) 1976-07-13 1978-03-07 Research Corporation Cerium sulfadiazine for treating burns
US4101631A (en) 1976-11-03 1978-07-18 Union Carbide Corporation Selective adsorption of mercury from gas streams
US4145282A (en) * 1977-01-24 1979-03-20 Andco Industries, Inc. Process for purifying waste water containing fluoride ion
US4127644A (en) 1977-04-29 1978-11-28 General Atomic Company Process for hydrogen production from water
WO1979000248A1 (en) 1977-11-01 1979-05-17 Atomic Energy Authority Uk Production of dispersions
US4200609A (en) 1978-04-03 1980-04-29 Mcdonnell Douglas Corporation Ozone removal filter containing manganese dioxide and ceric oxide catalysts
IT1157390B (it) * 1978-10-27 1987-02-11 Cnen Procedimento ed impianto per la depurazione continua di fluidi contaminati e per il condizionamento dei concentrati da cio' risultanti
US4251496A (en) 1979-03-22 1981-02-17 Exxon Research & Engineering Co. Process for the removal of SOx and NOx from gaseous mixture containing the same
US4230682A (en) 1979-06-11 1980-10-28 The United States Of America As Represented By The United States Department Of Energy Cyclic thermochemical process for producing hydrogen using cerium-titanium compounds
US4313925A (en) 1980-04-24 1982-02-02 The United States Of America As Represented By The United States Department Of Energy Thermochemical cyclic system for decomposing H2 O and/or CO2 by means of cerium-titanium-sodium-oxygen compounds
US5213779A (en) 1980-07-31 1993-05-25 Gas Desulfurization Corporation Process for optimizing the removal of NOX and SOX from gases utilizing lanthanide compounds
US5326737A (en) 1980-07-31 1994-07-05 Gas Desulfurization Corporation Cerium oxide solutions for the desulfurization of gases
IE52125B1 (en) 1980-10-02 1987-06-24 Fox Charles L Jun 1-ethyl-6-fluoro-1,4-dihydro-4-oxo-7-(1-piperazinyl)-3-quino-line carboxylic acid and metal salts thereof useful in burn therapy
US4392922A (en) 1980-11-10 1983-07-12 Occidental Chemical Corporation Trivalent chromium electrolyte and process employing vanadium reducing agent
US4386063A (en) * 1980-12-18 1983-05-31 International Flavors & Fragrances Inc. Flavor use of mixtures containing 1-n-butoxy-1-ethanol acetate
US4346063A (en) 1981-03-16 1982-08-24 Exxon Research & Engineering Co. Desulfurization of hot gas with cerium oxide
US4404197A (en) 1981-05-15 1983-09-13 Fox Jr Charles L Antimicrobial compositions containing 1-ethyl-6-fluoro-1,4-dihydro-4-dihydro-4-oxo-7-(1-piperazinyl)-3-quinoline carboxylic acid or metal salts thereof and silver sulfadiazine
US4474580A (en) 1982-03-16 1984-10-02 Mackenzie Chemical Works, Inc. Combustion fuel additives comprising metal enolates
US4585583A (en) * 1982-05-24 1986-04-29 The Dow Chemical Company In situ solidification of ion exchange beads
US4433196A (en) * 1982-06-25 1984-02-21 Conoco Inc. Color precursor removal from detergent range alkyl benzenes
US4507206A (en) * 1982-07-19 1985-03-26 Hughes Geoffrey F Method for restoring and maintaining eutrophied natural bodies of waters
US4588088A (en) * 1983-01-10 1986-05-13 Allen Arthur A Container assembly for storing toxic material
US4596659A (en) * 1983-01-18 1986-06-24 Asahi Kasei Kogyo Kabushiki Kaisha Selective separation of borate ions in water
US4581229A (en) 1983-01-25 1986-04-08 Henry Petrow Method of removing metal ions and compounds from the hair
US4474896A (en) 1983-03-31 1984-10-02 Union Carbide Corporation Adsorbent compositions
US4636289A (en) * 1983-05-02 1987-01-13 Allied Corporation Solution mining of sodium minerals with acids generated by electrodialytic water splitting
US4498706A (en) * 1983-08-15 1985-02-12 Intermountain Research & Development Corp. Solution mining of trona or nahcolite ore with aqueous NaOH and HCl solvents
US4828832A (en) 1983-09-07 1989-05-09 Laboratorios Biochemie De Mexico Method of manufacturing a composition for treating skin lesions
SE452307B (sv) 1983-09-12 1987-11-23 Boliden Ab Forfarande for rening av fororenade vattenlosningar innehallande arsenik och/eller fosfor
US4738799A (en) * 1983-10-28 1988-04-19 Westinghouse Electric Corp. Permanent disposal of radioactive particulate waste
US5080926A (en) 1984-02-09 1992-01-14 Julian Porter Anti-fouling coating process
FR2559755A1 (fr) 1984-02-20 1985-08-23 Rhone Poulenc Spec Chim Oxyde cerique a nouvelles caracteristiques morphologiques et son procede d'obtention
CA1241774A (en) 1984-05-23 1988-09-06 Bruce R. Conard Effluent treatment
US4843102A (en) 1984-10-19 1989-06-27 Phillips Petroleum Company Removal of mercury from gases
US5116418A (en) * 1984-12-03 1992-05-26 Industrial Progress Incorporated Process for making structural aggregate pigments
EP0190504B1 (en) 1984-12-28 1993-04-21 Johnson Matthey Public Limited Company Antimicrobial compositions
AU579647B2 (en) 1985-02-21 1988-12-01 Asahi Kasei Kogyo Kabushiki Kaisha Process for adsorption treatment of dissolved fluorine
US4652054A (en) * 1985-04-16 1987-03-24 Intermountain Research & Development Corporation Solution mining of trona or nahcolite ore with electrodialytically-produced aqueous sodium hydroxide
SE8502573D0 (sv) 1985-05-23 1985-05-23 Jouko Kanakre Fluorescent lanthanide chelates useful as labels of physiologically active materials
US4831519A (en) * 1985-12-12 1989-05-16 Itt Corporation Cellular array processor with variable nesting depth vector control by selective enabling of left and right neighboring processor cells
FR2596381B1 (fr) 1986-03-26 1988-05-27 Rhone Poulenc Chimie Oxydes ceriques a nouvelles caracteristiques morphologiques et leur procede d'obtention
US4753728A (en) 1986-04-07 1988-06-28 Amway Corporation Water filter
US4917875A (en) 1986-05-27 1990-04-17 Englehard Corporation Gas/solid contact method for removing sulfur oxides from gases
US4714694A (en) 1986-06-30 1987-12-22 Engelhard Corporation Aluminum-stabilized ceria catalyst compositions, and methods of making the same
FR2604920B1 (fr) 1986-10-10 1988-12-02 Ceraver Membrane de filtration ceramique et procede de fabrication
DE3751254D1 (de) 1986-10-31 1995-05-24 Nippon Zeon Co Wundverband.
FR2608583B1 (fr) 1986-12-19 1990-12-07 Rhone Poulenc Chimie Oxyde cerique a nouvelles caracteristiques morphologiques et son procede d'obtention
US4818483A (en) 1986-12-29 1989-04-04 Carondelet Foundry Company Alloy resistant to seawater and corrosive process fluids
US4889771A (en) 1987-02-20 1989-12-26 Rhone-Poulenc Inc. Method of preserving wood with lanthanide derivatives
US4842898A (en) 1987-02-20 1989-06-27 Rhone Poulenc Inc. Method of preserving wood with lanthanide derivatives lanthanide derivatives
FI89581C (fi) 1987-04-08 1993-10-25 Imatran Voima Oy Foerfarande foer behandling av avfall som innehaoller laogaktiva organiska avfallssammansaettningar fraon kaernkraftverk med hjaelp av anaerobisk jaesning
GB2206111B (en) * 1987-06-24 1991-08-14 Council Scient Ind Res Sintered ceramic product
US4902426A (en) * 1987-06-30 1990-02-20 Pedro B. Macedo Ion exchange compositions
US4786483A (en) 1987-09-25 1988-11-22 Mobil Oil Corporation Process for removing hydrogen sulfide and mercury from gases
DE3734189A1 (de) 1987-10-09 1989-04-27 Hoechst Ag Verfahren zur abtrennung und wiedergewinnung von naphthalinsulfonsaeuren aus waessrigen loesungen
US4814152A (en) 1987-10-13 1989-03-21 Mobil Oil Corporation Process for removing mercury vapor and chemisorbent composition therefor
US4881976A (en) 1987-11-17 1989-11-21 Rhone-Poulenc Inc. Antifouling paints containing matrices cross-linked with lanthanides and methods of making and use
US5004711A (en) 1987-12-09 1991-04-02 Harshaw/Filtrol Partnership Process of producing colloidal zirconia sols and powders using an ion exchange resin
US5207877A (en) 1987-12-28 1993-05-04 Electrocinerator Technologies, Inc. Methods for purification of air
US4881176B1 (en) 1988-01-22 1997-06-17 Thokon Corp Filter analyzing system
JPH01256593A (ja) 1988-04-07 1989-10-13 Nippon Mining Co Ltd 燃料組成物及び燃料添加剤
US4891067A (en) 1988-05-13 1990-01-02 Kennecott Utah Copper Corporation Processes for the treatment of smelter flue dust
FR2633603B1 (fr) 1988-07-01 1991-02-22 Rhone Poulenc Chimie Trifluorure de cerium a nouvelles caracteristiques morphologiques et son procede d'obtention
US5192452A (en) 1988-07-12 1993-03-09 Nippon Shokubai Kagaku Kogyo, Co., Ltd. Catalyst for water treatment
DE3825584A1 (de) 1988-07-28 1990-02-01 Hoechst Ag Traegerharz fuer pigmentpasten, seine herstellung und verwendung
US5024769A (en) 1988-07-29 1991-06-18 Union Oil Company Of California Method of treating an arsenic-containing solution
US5759855A (en) 1988-09-14 1998-06-02 La Jolla Cancer Research Foundation Methods for modifying the binding activity of cell adhesion receptors
US4935146A (en) 1988-11-15 1990-06-19 Aluminum Company Of America Method for removing arsenic or selenium from an aqueous solution containing a substantial background of another contaminant
US5082570A (en) 1989-02-28 1992-01-21 Csa Division Of Lake Industries, Inc. Regenerable inorganic media for the selective removal of contaminants from water sources
US5711930A (en) 1989-03-10 1998-01-27 Thiele Kaolin Company Process for improving the phyiscal properties of formed particles
US5330770A (en) 1989-03-11 1994-07-19 Kinki Pipe Giken Kabushiki Kaisha Water-soluble glass water-treating agent
US4973501A (en) 1989-05-09 1990-11-27 Rhone-Poulenc Inc. Lanthanide impregnated wood composition and method for permanently depositing water insoluble lanthanide derivatives into wood materials
JPH0757690B2 (ja) 1989-06-16 1995-06-21 信越化学工業株式会社 希土類酸化物充実球状粒子の製造方法
JPH0753276B2 (ja) * 1989-10-03 1995-06-07 栗田工業株式会社 フッ化物含有水の処理方法
US5104660A (en) 1989-11-21 1992-04-14 Bruce A. Barber Method of preparing an antimicrobial wound dressing
US5227168A (en) 1989-11-21 1993-07-13 Bruce Barber Method of treating a wound
US5116620A (en) 1989-11-21 1992-05-26 Bruce A. Barber Antimicrobial wound dressing
US5145587A (en) 1989-12-06 1992-09-08 Nippon Shokubai Kagaku Kogyo Co., Ltd. Method for treatment of waste water
CA2040353A1 (en) 1990-04-16 1991-10-17 Eberhard Krause Method for forming copper arsenate
US4999174A (en) * 1990-06-22 1991-03-12 Gas Desulfurization Corporation Use of cerium oxide for removal of chlorine from fuel gases
US5236595A (en) 1990-07-06 1993-08-17 International Environmental Systems, Inc., Usa Method and apparatus for filtration with plural ultraviolet treatment stages
US5207995A (en) 1990-09-19 1993-05-04 Union Oil Company Of California Recovery of cerium from fluoride-containing ores
US5248398A (en) 1990-11-16 1993-09-28 Macdermid, Incorporated Process for direct electrolytic regeneration of chloride-based ammoniacal copper etchant bath
US5053139A (en) 1990-12-04 1991-10-01 Engelhard Corporation Removal of heavy metals, especially lead, from aqueous systems containing competing ions utilizing amorphous tin and titanium silicates
SU1766848A1 (ru) 1990-12-12 1992-10-07 Научно-производственное объединение "Радиевый институт им.В.Г.Хлопина" Способ извлечени п тивалентного мышь ка из кислых мышь ксодержащих стоков
US5161385A (en) 1991-03-18 1992-11-10 Schumacher Ernest W Refrigerant recovery and recycle system with flexible storage bag
US5976383A (en) 1991-04-08 1999-11-02 Romar Technologies, Inc. Recycle process for removing dissolved heavy metals from water with aluminum particles
EP0580707B1 (en) 1991-04-12 1997-07-16 Novo Nordisk A/S Removal of excess dye from new textiles
US5133948A (en) 1991-07-11 1992-07-28 Asarco Incorporated Process for the removal of bismuth from copper refining electrolyte by using lead oxide
BR9104844A (pt) 1991-11-06 1993-05-11 Solvay Processo para a extracao seletiva de cerio de uma solucao aquosa de elementos de terras raras
US5260066A (en) 1992-01-16 1993-11-09 Srchem Incorporated Cryogel bandage containing therapeutic agent
DE4205828A1 (de) 1992-02-26 1993-09-02 Henkel Kgaa Viruswirksame desinfektionsmittel
US5344479A (en) 1992-03-13 1994-09-06 Sherritt Gordon Limited Upgrading copper sulphide residues containing nickel and arsenic
US5403495A (en) * 1992-03-13 1995-04-04 Tetra Technologies, Inc. Fluoride removal system
US5238488A (en) 1992-03-26 1993-08-24 Gas Research Institute Process and solution for transforming insoluble mercury metal into a soluble compound
US6610264B1 (en) 1992-04-15 2003-08-26 Exxonmobil Oil Corporation Process and system for desulfurizing a gas stream
US5368703A (en) 1992-05-12 1994-11-29 Anco Environmental Processes, Inc. Method for arsenic removal from wastewater
US5348662A (en) 1992-05-14 1994-09-20 Elf Atochem North America, Inc. Process for removing heavy metals from aqueous solutions
GEP20002074B (en) * 1992-05-19 2000-05-10 Westaim Tech Inc Ca Modified Material and Method for its Production
US5681575A (en) * 1992-05-19 1997-10-28 Westaim Technologies Inc. Anti-microbial coating for medical devices
US5178768A (en) * 1992-08-20 1993-01-12 Pall Corporation Mixed filter bed composition and method of use
TW261602B (zh) 1992-09-22 1995-11-01 Timothy John White
FR2699524B1 (fr) 1992-12-21 1995-02-10 Rhone Poulenc Chimie Composition à base d'un oxyde mixte de cérium et de zirconium, préparation et utilisation.
US5281253A (en) * 1993-01-06 1994-01-25 Praxair Technology, Inc. Multistage membrane control system and process
US5328669A (en) 1993-01-26 1994-07-12 South Dakota School Of Mines And Technology Extraction of precious metals from ores and other precious metal containing materials using halogen salts
US5352365A (en) 1993-02-22 1994-10-04 Fuller Richard L Process for removing scale, and reducing scale formation in sewage treatment plants
WO1994019286A1 (en) 1993-02-24 1994-09-01 Dudley John Mills Treatment of swimming pool water
CA2090989C (en) 1993-03-04 1995-08-15 Konstantin Volchek Removal of arsenic from aqueous liquids with selected alumina
US20020044901A1 (en) 1993-04-19 2002-04-18 William G. Wilson Desulfurization of gases with cerium oxide microdomains
US5338460A (en) 1993-04-22 1994-08-16 Elf Atochem North America, Inc. Sulfide precipitation of heavy metals from aqueous solutions
US5389352A (en) 1993-07-21 1995-02-14 Rodel, Inc. Oxide particles and method for producing them
US5545604A (en) * 1993-07-30 1996-08-13 Intercat, Inc. Processes for reacting bastnaesite with alkaline-earth metals
PT729436E (pt) 1993-10-22 2000-06-30 Crc For Waste Manag And Pollut Oxidacao fotoassistida de especies em solucao
US5500198A (en) 1993-10-26 1996-03-19 Massachusetts Institute Of Technology Composite catalyst for carbon monoxide and hydrocarbon oxidation
US5422489A (en) 1994-01-24 1995-06-06 Bhargava; Rameshwar N. Light emitting device
US5358643A (en) 1994-02-08 1994-10-25 Mcclintock William W Treatment method for removing arsenic from arsenic contaminated water
US5527451A (en) 1994-03-08 1996-06-18 Recovery Engineering, Inc. Water treatment device with volume totalization valve
US5712219A (en) * 1994-04-08 1998-01-27 Kansas State University Research Foundation Iron oxide magnesium oxide composites and method for destruction of cholrinated hydrocarbon using such composites
US5759939A (en) 1994-04-08 1998-06-02 Kansas State University Research Foundation Composite metal oxide adsorbents
US5455489A (en) 1994-04-11 1995-10-03 Bhargava; Rameshwar N. Displays comprising doped nanocrystal phosphors
US5409522A (en) 1994-04-20 1995-04-25 Ada Technologies, Inc. Mercury removal apparatus and method
US5551976A (en) 1994-05-05 1996-09-03 Union Oil Company Of California Superplasticizer-concrete composition for waste disposal
US5422907A (en) 1994-05-20 1995-06-06 Bhargava; Rameshwar N. Pumped solid-state lasers comprising doped nanocrystal phosphors
US5660802A (en) 1994-06-07 1997-08-26 Fountainhead Technologies, Inc. Water purifier
JPH07331350A (ja) 1994-06-10 1995-12-19 Fuji Photo Film Co Ltd 銀除去方法
US5580535A (en) 1994-07-07 1996-12-03 Engelhard Corporation System and method for abatement of food cooking fumes
US5505766A (en) 1994-07-12 1996-04-09 Electric Power Research, Inc. Method for removing pollutants from a combustor flue gas and system for same
US5446286A (en) 1994-08-11 1995-08-29 Bhargava; Rameshwar N. Ultra-fast detectors using doped nanocrystal insulators
JP3095960B2 (ja) 1994-10-05 2000-10-10 触媒化成工業株式会社 抗菌剤
US5575919A (en) 1994-12-08 1996-11-19 Peter F. Santina Method for removing toxic substances in water
US6093328A (en) 1994-12-08 2000-07-25 Santina; Peter F. Method for removing toxic substances in water
US5529811A (en) 1994-12-30 1996-06-25 Wayne Pigment Corp. Tannin staining and fungus growth inhibitor pigment and manufacturing procedure
GB9502253D0 (en) 1995-02-06 1995-03-29 Giltech Ltd The effects of antibacterial agents on the behaviour of mouse fibroblasts in vitro
US5939087A (en) 1995-03-14 1999-08-17 Hagiwara Research Corporation Antimicrobial polymer composition
JP3038133B2 (ja) 1995-03-14 2000-05-08 株式会社萩原技研 抗菌性樹脂組成物
US5603838A (en) * 1995-05-26 1997-02-18 Board Of Regents Of The University And Community College Systems Of Nevada Process for removal of selenium and arsenic from aqueous streams
US6264841B1 (en) 1995-06-30 2001-07-24 Helen E. A. Tudor Method for treating contaminated liquids
AUPN585795A0 (en) 1995-10-06 1995-11-02 Tox Free Systems Inc. Volatile materials treatment system
US5702592A (en) 1995-10-20 1997-12-30 Western Filter Corporation Filter monitoring device which monitors differential pressure and temperature
JP2746861B2 (ja) 1995-11-20 1998-05-06 三井金属鉱業株式会社 酸化セリウム超微粒子の製造方法
FR2741869B1 (fr) 1995-12-04 1998-02-06 Rhone Poulenc Chimie Oxyde de cerium a pores de structure lamellaire, procede de preparation et utilisation en catalyse
US5611934A (en) 1995-12-18 1997-03-18 Hoechst Celanese Corporation Process for dye removal
US5859064A (en) 1996-03-13 1999-01-12 The United States Of America As Represented By The Secretary Of The Navy Chemical warfare agent decontamination solution
US5637258A (en) 1996-03-18 1997-06-10 Nanocrystals Technology L.P. Method for producing rare earth activited metal oxide nanocrystals
US5968337A (en) 1996-04-18 1999-10-19 Battelle Memorial Institute Apparatus and method for constant flow oxidizing of organic materials
US5738024A (en) 1996-04-19 1998-04-14 Winegar; Phillip Catalytic reduction apparatus for NOX reduction
US5897675A (en) 1996-04-26 1999-04-27 Degussa Aktiengesellschaft Cerium oxide-metal/metalloid oxide mixture
US5689038A (en) 1996-06-28 1997-11-18 The United States Of America As Represented By The Secretary Of The Army Decontamination of chemical warfare agents using activated aluminum oxide
DE19631472A1 (de) 1996-07-12 1998-01-15 Peter Dipl Chem Koslowsky Verfahren und Vorrichtung zur Aufbereitung und Reinhaltung von Wasser
US5962343A (en) 1996-07-30 1999-10-05 Nissan Chemical Industries, Ltd. Process for producing crystalline ceric oxide particles and abrasive
US6030537A (en) 1996-08-02 2000-02-29 Engelhard Corporation Method for removing arsenic from aqueous systems containing competing ions
US6669864B1 (en) 1996-08-14 2003-12-30 Discovery Resources, Inc. Compositions for improved recovery of metals
US6908570B2 (en) 1996-08-14 2005-06-21 Discovery Resources, Inc. Compositions for improved recovery of metals
US5990373A (en) 1996-08-20 1999-11-23 Kansas State University Research Foundation Nanometer sized metal oxide particles for ambient temperature adsorption of toxic chemicals
US6344271B1 (en) 1998-11-06 2002-02-05 Nanoenergy Corporation Materials and products using nanostructured non-stoichiometric substances
US5783057A (en) 1996-09-19 1998-07-21 Nippon Mining & Metals Co., Ltd. Method of purifying copper electrolytic solution
KR100775228B1 (ko) * 1996-09-30 2007-11-12 히다치 가세고교 가부시끼가이샤 산화세륨 연마제 및 기판의 연마법
AU5586298A (en) 1996-11-18 1998-06-10 Board Of Regents Of The University And Community College System Of Nevada, The Removal of metal ions from aqueous solution
US6048821A (en) 1996-11-18 2000-04-11 Bulldog Technologies U.S.A., Inc. SOx additive systems based upon use of multiple particle species
US6428705B1 (en) 1996-11-26 2002-08-06 Microbar Incorporated Process and apparatus for high flow and low pressure impurity removal
JP3549346B2 (ja) 1996-12-06 2004-08-04 信越化学工業株式会社 希土類酸化物
CN1049941C (zh) 1996-12-10 2000-03-01 珠海经济特区天年高科技国际企业公司 含有无机氧化物复合粉体的医用无纺布
JP3307554B2 (ja) * 1997-02-25 2002-07-24 信越化学工業株式会社 希土類元素の連続溶媒抽出法
US5876610A (en) * 1997-03-19 1999-03-02 Clack Corporation Method and apparatus for monitoring liquid flow through an enclosed stream
AUPO589697A0 (en) 1997-03-26 1997-04-24 Commonwealth Scientific And Industrial Research Organisation Sediment remediation process
US6780332B2 (en) 1997-03-28 2004-08-24 Parker Holding Services Corp. Antimicrobial filtration
US5922926A (en) 1997-05-27 1999-07-13 Mainstream Engineering Corporation Method and system for the destruction of hetero-atom organics using transition-alkaline-rare earth metal alloys
US6001152A (en) 1997-05-29 1999-12-14 Sinha; Rabindra K. Flue gas conditioning for the removal of particulates, hazardous substances, NOx, and SOx
FR2764399A1 (fr) * 1997-06-05 1998-12-11 Eastman Kodak Co Depollution d'un effluent photographique par traitement avec un alumino-silicate polymere fibreux
US5897781A (en) 1997-06-06 1999-04-27 Waters Investments Limited Active pump phasing to enhance chromatographic reproducibility
US6132623A (en) 1997-06-19 2000-10-17 The University Of Connecticut Immobilization of inorganic arsenic species using iron
EP0894530B1 (en) 1997-07-28 2003-09-10 Corning Incorporated Mercury removal catalyst and method of making and using same
US6045925A (en) * 1997-08-05 2000-04-04 Kansas State University Research Foundation Encapsulated nanometer magnetic particles
US6093325A (en) 1997-08-05 2000-07-25 Bechtel Bwxt Idaho, Llc Method of dye removal for the textile industry
US6200482B1 (en) 1997-08-12 2001-03-13 Adi International Inc. Arsenic filtering media
RU2136607C1 (ru) 1997-10-03 1999-09-10 Уральский научно-исследовательский институт региональных экологических проблем ("УралНИИ "Экология") Способ очистки сточных вод от мышьяка
US6300640B1 (en) 1997-11-28 2001-10-09 Nanocrystal Imaging Corporation Composite nanophosphor screen for detecting radiation having optically reflective coatings
US5952665A (en) 1997-11-28 1999-09-14 Nanocrystals Technology L.P. Composite nanophosphor screen for detecting radiation
US5820966A (en) 1997-12-09 1998-10-13 Inco Limited Removal of arsenic from iron arsenic and sulfur dioxide containing solutions
US6099819A (en) 1998-01-26 2000-08-08 Tda Research, Inc. Catalysts for the selective oxidation of hydrogen sulfide to sulfur
US6326326B1 (en) 1998-02-06 2001-12-04 Battelle Memorial Institute Surface functionalized mesoporous material and method of making same
JP4630456B2 (ja) 1998-04-01 2011-02-09 アルキャン・インターナショナル・リミテッド 水処理方法
US20020104801A1 (en) 1998-04-06 2002-08-08 Nicolas Voute Small dense microporous solid support materials, their preparation,and use for purification of large macromolecules and bioparticles
US6059978A (en) * 1998-05-06 2000-05-09 Simco Holding Corporation Method of removing colorants from wastewater
US6203709B1 (en) 1998-05-11 2001-03-20 California Institute Of Technology Iron (III)-doped calcium alginate gel sorbents for sorption of arsenate and selenite
US6010776A (en) 1998-05-19 2000-01-04 3M Innovative Properties Company Microporous materials containing cross-linked oil
EP1091801A4 (en) * 1998-05-30 2006-05-10 Univ Kansas State POROUS PELLET ADSOBENTS PRODUCED FROM NANOCRYSTALLES
US6093236A (en) 1998-05-30 2000-07-25 Kansas State University Research Foundation Porous pellet adsorbents fabricated from nanocrystals
FI105313B (fi) 1998-06-03 2000-07-14 Planar Systems Oy Menetelmä ohutkalvo-elektroluminesenssirakenteiden kasvattamiseksi
US6843617B2 (en) 1998-06-18 2005-01-18 Rmt, Inc. Stabilization of toxic metals in a waste matrix and pore water
JP3924381B2 (ja) 1998-07-08 2007-06-06 千代田化工建設株式会社 水中に溶解した砒素を吸着除去する方法
US6214238B1 (en) 1998-07-27 2001-04-10 Tosco Corporation Method for removing selenocyanate ions from waste water
US6036886A (en) * 1998-07-29 2000-03-14 Nanocrystals Technology L.P. Microemulsion method for producing activated metal oxide nanocrystals
US6197201B1 (en) * 1998-07-29 2001-03-06 The Board Of Regents Of The University & Community College System Of Nevada Process for removal and stabilization of arsenic and selenium from aqueous streams and slurries
US6087294A (en) 1998-08-12 2000-07-11 Kansas State University Research Foundation Dispersion and stabilization of reactive atoms on the surface of metal oxides
US6221739B1 (en) * 1998-08-20 2001-04-24 Vladimir A. Gorelik Method for bonding single crystal membranes to a curved surface
GB9818778D0 (en) 1998-08-28 1998-10-21 Crosfield Joseph & Sons Particulate carrier for biocide formulations
US6417423B1 (en) 1998-09-15 2002-07-09 Nanoscale Materials, Inc. Reactive nanoparticles as destructive adsorbents for biological and chemical contamination
US6057488A (en) * 1998-09-15 2000-05-02 Nantek, Inc. Nanoparticles for the destructive sorption of biological and chemical contaminants
US6653519B2 (en) * 1998-09-15 2003-11-25 Nanoscale Materials, Inc. Reactive nanoparticles as destructive adsorbents for biological and chemical contamination
US6617583B1 (en) 1998-09-18 2003-09-09 Massachusetts Institute Of Technology Inventory control
US6251303B1 (en) 1998-09-18 2001-06-26 Massachusetts Institute Of Technology Water-soluble fluorescent nanocrystals
DE19844167A1 (de) * 1998-09-25 2000-04-06 Ticona Gmbh Aktivkohlefilter
US6368510B2 (en) * 1998-09-25 2002-04-09 Friot Corporation Method and apparatus for the removal of arsenic from water
AU1128400A (en) * 1998-10-22 2000-05-08 Medical College Of Georgia Institute, Inc. Long terminal repeat, enhancer, and insulator sequences for use in recombinant vectors
US6312604B1 (en) 1998-10-23 2001-11-06 Zodiac Pool Care, Inc. Lanthanide halide water treatment compositions and methods
US6395659B2 (en) * 1998-11-09 2002-05-28 Nippon Sheet Glass Co., Ltd. Ultraviolet/infrared absorbent glass
US6576155B1 (en) 1998-11-10 2003-06-10 Biocrystal, Ltd. Fluorescent ink compositions comprising functionalized fluorescent nanocrystals
US6221602B1 (en) 1998-11-10 2001-04-24 Bio-Pixels Ltd. Functionalized nanocrystals and their use in labeling for strand synthesis or sequence determination
US6114038A (en) 1998-11-10 2000-09-05 Biocrystal Ltd. Functionalized nanocrystals and their use in detection systems
AU1717600A (en) 1998-11-10 2000-05-29 Biocrystal Limited Methods for identification and verification
US6536672B1 (en) 1998-11-18 2003-03-25 Dna Technologies, Inc. Product authentication system and method
JP2000184433A (ja) 1998-12-11 2000-06-30 Nec Corp Ｃｄｍａ移動通信システムにおける無線チャネル多重通信方式
IL143726A0 (en) 1998-12-14 2002-04-21 Cellegy Pharma Inc A pharmaceutical composition containing a nitric oxide donor
US6391869B1 (en) 1998-12-14 2002-05-21 Cellergy Pharmaceuticals, Inc. Compositions and methods for the treatment of anorectal disorders
US6627632B2 (en) 1998-12-14 2003-09-30 Cellegy Pharmaceuticals, Inc. Compositions and methods for the treatment of anorectal disorders
US6542540B1 (en) 1998-12-21 2003-04-01 Analog Devices, Inc. Integrated analog adaptive equalizer
US6001157A (en) 1998-12-28 1999-12-14 Nogami; Hideaki Additive for antifouling paint
US6221903B1 (en) * 1999-01-11 2001-04-24 University And College Of Nevada, Reno Amiodarone as an antifungal agent
US6299851B1 (en) 1999-03-26 2001-10-09 National Science Council Method for oxidizing hydrogen sulfide to elemental sulfur
JP3992402B2 (ja) 1999-05-25 2007-10-17 株式会社コーセー 金属酸化物固溶酸化セリウムからなる紫外線遮断剤並びにそれを配合した樹脂組成物及び化粧料
EP2246301A1 (en) 1999-05-28 2010-11-03 Hitachi Chemical Co., Ltd. Method for producing cerium oxide
SE514338C2 (sv) 1999-06-01 2001-02-12 Boliden Mineral Ab Förfarande för rening av sur laklösning
US6375834B1 (en) * 1999-06-30 2002-04-23 Whirlpool Corporation Water filter monitoring and indicating system
US6351932B1 (en) * 1999-07-02 2002-03-05 Wells Lamont Industry Group Cut-resistant antimicrobial yarn and article of wearing apparel made therefrom
EP1202936A1 (en) 1999-07-08 2002-05-08 Charles F. Heinig, Jr. Novel materials and methods for water purification
US6319108B1 (en) 1999-07-09 2001-11-20 3M Innovative Properties Company Metal bond abrasive article comprising porous ceramic abrasive composites and method of using same to abrade a workpiece
US6602111B1 (en) 1999-07-16 2003-08-05 Seimi Chemical Co., Ltd. Abrasive
US6383273B1 (en) 1999-08-12 2002-05-07 Apyron Technologies, Incorporated Compositions containing a biocidal compound or an adsorbent and/or catalyst compound and methods of making and using therefor
US6187192B1 (en) 1999-08-25 2001-02-13 Watervisions International, Inc. Microbiological water filter
GB9921659D0 (en) 1999-09-14 1999-11-17 Imi Cornelius Uk Ltd Water treatment
US6599428B1 (en) 1999-10-01 2003-07-29 Paragon Water Systems, Inc. Filter system for removing contaminants from water and method thereof
US6885114B2 (en) 1999-10-05 2005-04-26 Access Business Group International, Llc Miniature hydro-power generation system
US6723349B1 (en) 1999-10-12 2004-04-20 Emory University Polyoxometalate materials, metal-containing materials, and methods of use thereof
US6177015B1 (en) 1999-10-18 2001-01-23 Inco Limited Process for reducing the concentration of dissolved metals and metalloids in an aqueous solution
WO2001030473A1 (en) * 1999-10-27 2001-05-03 Board Of Regents Of The University And Community College System Of Nevada Cyanide detoxification process
DE19952383A1 (de) * 1999-10-30 2001-05-17 Henkel Kgaa Wasch- und Reinigungsmittel
WO2001032799A1 (en) * 1999-11-04 2001-05-10 Nanogram Corporation Particle dispersions
ZA200004533B (en) 1999-11-09 2001-03-01 Omnigraphics Commercial Propri Mounting of flexible display panels.
US6342163B1 (en) * 1999-11-12 2002-01-29 United States Filter Corporation Apparatus and method for sanitizing and cleaning a filter system
US6887566B1 (en) 1999-11-17 2005-05-03 Cabot Corporation Ceria composition and process for preparing same
US6190627B1 (en) 1999-11-30 2001-02-20 Engelhard Corporation Method and device for cleaning the atmosphere
DE19958458A1 (de) 1999-12-03 2001-06-21 Beiersdorf Ag Antimikrobiell ausgerüstete Wundauflagen
US6461535B1 (en) 1999-12-03 2002-10-08 Pan American Health Organization Composition for arsenic removal from ground water
US6716895B1 (en) 1999-12-15 2004-04-06 C.R. Bard, Inc. Polymer compositions containing colloids of silver salts
US7179849B2 (en) 1999-12-15 2007-02-20 C. R. Bard, Inc. Antimicrobial compositions containing colloids of oligodynamic metals
CN1248486C (zh) 1999-12-17 2006-03-29 皇家菲利浦电子有限公司 用于峰化信号的方法和设备
US7329359B2 (en) * 1999-12-20 2008-02-12 Eltron Research, Inc. Application of catalysts for destruction of organic compounds in liquid media
US6383395B1 (en) 2000-01-04 2002-05-07 Luxfer Group Limited Water treatment method and apparatus
US6197204B1 (en) 2000-01-21 2001-03-06 Kdf Fluid Treatment, Inc. Zinc oxide fluid treatment
US6460535B1 (en) 2000-01-24 2002-10-08 Forrest Paint Company Heat source for rail expansion
US20020066702A1 (en) 2000-02-22 2002-06-06 Jinfang Liu Antibacterial and antibiofilm bonded permanent magnets
US6338800B1 (en) 2000-02-22 2002-01-15 Natural Chemistry, Inc. Methods and compositions using lanthanum for removing phosphates from water
US6391207B1 (en) * 2000-02-29 2002-05-21 Ciba Specialty Chemicals Water Treatments Ltd. Treatment of scale
GB0006552D0 (en) 2000-03-17 2000-05-10 For Research In Earth And Spac System for removing phosphorus from waste water
US6224898B1 (en) 2000-03-23 2001-05-01 The United States Of America As Represented By The Secretary Of The Army Antimicrobial dendrimer nanocomposites and a method of treating wounds
AU2001249510A1 (en) 2000-03-27 2001-10-08 Schott Glas New cosmetic, personal care, cleaning agent, and nutritional supplement compositions comprising bioactive glass and methods of making and using the same
US6790521B1 (en) 2000-04-05 2004-09-14 Matsumoto Yushi-Seiyaku Co., Ltd. Glass composite including dispersed rare earth iron garnet nanoparticles
JP3389553B2 (ja) 2000-05-01 2003-03-24 大塚化学株式会社 フェノキシホスファゼン系化合物の改質方法、難燃性樹脂組成物及び難燃性樹脂成形体
EP1285956A4 (en) 2000-05-16 2004-09-29 Mitsui Mining & Smelting Co CERIUM BASED ABRASIVE, RAW MATERIAL AND MANUFACTURING PROCESS
US6328779B1 (en) 2000-05-31 2001-12-11 Corning Incorporated Microwave regenerated diesel particular filter and method of making the same
US6852903B1 (en) 2000-05-31 2005-02-08 The United States Of America As Represented By The Secretary Of The Army Decontamination of chemical warfare agents using a reactive sorbent
US6420434B1 (en) 2000-06-02 2002-07-16 The United States Of America As Represented By The Secretary Of The Army Active topical skin protectants using polyoxometallates
US6410603B1 (en) 2000-06-02 2002-06-25 The United States Of America As Represented By The Secretary Of The Army Active topical skin protectants using combinations of reactive nanoparticles and polyoxometalates or metal salts
US6403653B1 (en) 2000-06-02 2002-06-11 The United States Of America As Represented By The Secretary Of The Army Active topical skin protectants using reactive nanoparticles
US6468499B1 (en) 2000-06-09 2002-10-22 Argonne National Laboratory Method of generating hydrogen by catalytic decomposition of water
CA2414323A1 (en) 2000-06-30 2002-01-10 Ravindranathan Thampi Carboxylate-containing photocatalytic body, manufacture and use thereof
US20020003116A1 (en) 2000-07-07 2002-01-10 Golden Josh H. System and method for removal of arsenic from aqueous solutions
US6613230B2 (en) * 2000-07-07 2003-09-02 Ionics, Incorporated Method for simultaneous removal of arsenic and fluoride from aqueous solutions
CN1178160C (zh) * 2000-07-13 2004-12-01 皇家菲利浦电子有限公司 确定一行对象中由脉冲转发器产生的所需对象位置的方法和系统
US7476324B2 (en) 2000-07-14 2009-01-13 Ferrate Treatment Technologies, Llc Methods of synthesizing a ferrate oxidant and its use in ballast water
US6361824B1 (en) * 2000-07-31 2002-03-26 Nanocrystal Imaging Corp. Process for providing a highly reflective coating to the interior walls of microchannels
FR2812201B1 (fr) 2000-07-31 2003-08-01 Hightech Business Agency Hba Methode de traitement bactericide, fongicide, virucide et insecticide de l'air ambiant
TW576825B (en) 2000-08-10 2004-02-21 Iner Ae Method for liquid chromate ion and oxy-metal ions removal and stabilization
EP1309279A4 (en) 2000-08-17 2008-04-09 Tyco Healthcare US SUTURES AND COATINGS FROM RESORBABLE THERAPEUTIC GLASS
US6475451B1 (en) 2000-08-23 2002-11-05 Gas Technology Institute Mercury removal from gaseous process streams
JP3468743B2 (ja) 2000-08-31 2003-11-17 株式会社ナスカ 塗料用防錆防汚添加剤および同添加剤を含有する塗料
US6881424B1 (en) 2000-09-05 2005-04-19 Mionix Corporation Highly acidic metalated organic acid
US6537382B1 (en) 2000-09-06 2003-03-25 The United States Of America As Represented By The Secretary Of The Army Decontamination methods for toxic chemical agents
US6428604B1 (en) 2000-09-18 2002-08-06 Inco Limited Hydrometallurgical process for the recovery of nickel and cobalt values from a sulfidic flotation concentrate
EP1243633A4 (en) 2000-10-02 2009-05-27 Mitsui Mining & Smelting Co ABRASIVE CERIUM-BASED MATERIAL AND PROCESS FOR PRODUCING THE SAME
US7078071B2 (en) 2000-10-05 2006-07-18 Matsumoto Yushi-Seiyaku Co., Ltd. Glass composite including dispersed rare earth iron garnet nanoparticles
AU2002211686A1 (en) 2000-10-13 2002-04-22 On Site Gas Systems, Inc. Bandage using molecular sieves
US20050126430A1 (en) 2000-10-17 2005-06-16 Lightner James E.Jr. Building materials with bioresistant properties
US6878286B2 (en) 2000-10-25 2005-04-12 Basin Water, Inc. High efficiency ion exchange system for removing contaminants from water
EP1346003B1 (en) 2000-11-30 2009-11-25 Showa Denko K.K. Cerium-based abrasive, production process thereof
DE10060099A1 (de) * 2000-12-04 2002-06-06 Basf Ag Regenerierung eines Dehydrierkatalysators
TW528796B (en) 2000-12-13 2003-04-21 Mitsui Mining & Amp Smelting C Cerium-based abrasive and method of evaluating the same
US6770483B2 (en) 2000-12-15 2004-08-03 Irving Lyon Determination of multi-valent metal contamination and system for removal of multi-valent metal contaminants from water
US6921739B2 (en) 2000-12-18 2005-07-26 Aquatic Treatment Systems, Inc. Anti-microbial and oxidative co-polymer
JP2002205062A (ja) 2001-01-12 2002-07-23 Shin Nihon Salt Co Ltd 塩水中の銅除去方法及び銅吸着樹脂の再生方法及び塩水中の銅除去装置
US6365810B1 (en) * 2001-01-17 2002-04-02 Latin Percussion, Inc. Shaker instrument
NL1017206C2 (nl) 2001-01-26 2002-07-29 Cdem Holland Bv Werkwijze voor het verwijderen van kwik uit een gasstroom.
US6447577B1 (en) * 2001-02-23 2002-09-10 Intevep, S. A. Method for removing H2S and CO2 from crude and gas streams
TWI272249B (en) 2001-02-27 2007-02-01 Nissan Chemical Ind Ltd Crystalline ceric oxide sol and process for producing the same
MXPA03007960A (es) 2001-03-06 2003-12-04 Cellegy Pharma Inc Compuestos y metodos para el tratamiento de desordenes urogenitales.
US6528451B2 (en) 2001-03-13 2003-03-04 W.R. Grace & Co.-Conn. Catalyst support material having high oxygen storage capacity and method of preparation thereof
US6864213B2 (en) 2001-03-13 2005-03-08 Delphi Technologies, Inc. Alkaline earth / rare earth lean NOx catalyst
JP2002282686A (ja) 2001-03-29 2002-10-02 Unitika Ltd リン酸イオン吸着材及び水中のリン酸イオン除去方法
CA2442490A1 (en) 2001-03-29 2002-10-10 Nippon Steel Chemical Co SUBSTANCE AND METHOD FOR THE TREATMENT OF ACIDIC WASTEWATER
CA2442541A1 (en) 2001-04-02 2002-10-17 Japan Science And Technology Corporation Manganese/oxygen compound with arsenic adsorption, arsenic adsorbent, and method of adsorptively removing arsenic from aqueous solution
DE10117435B4 (de) * 2001-04-03 2006-01-12 Msa Auer Gmbh Verfahren zur Herstellung eines Filterkörpers
US6719828B1 (en) 2001-04-30 2004-04-13 John S. Lovell High capacity regenerable sorbent for removal of mercury from flue gas
WO2002090260A1 (en) * 2001-05-07 2002-11-14 The Trustees Of Columbia University In The City Of New York Apparatus and method for preparing cerium oxide nanoparticles
JP4715032B2 (ja) * 2001-05-25 2011-07-06 トヨタ自動車株式会社 ディーゼル排ガス浄化フィルタ
JP4002740B2 (ja) 2001-05-29 2007-11-07 三井金属鉱業株式会社 セリウム系研摩材の製造方法
US7008559B2 (en) 2001-06-06 2006-03-07 Nomadics, Inc. Manganese doped upconversion luminescence nanoparticles
ES2189649B1 (es) 2001-06-15 2004-09-16 Oftrai S.L. Nueva composicion desinfectante y antiseptica.
US7074336B1 (en) 2001-06-20 2006-07-11 Sandia Corporation Inorganic ion sorbents and methods for using the same
AU2002300062B8 (en) 2001-07-16 2010-04-15 Dudley Mills Pty Ltd Removal of Phosphate from Water
US6440300B1 (en) 2001-07-16 2002-08-27 Michael Randall Water treatment system for swimming pool water
US6790363B2 (en) 2001-07-24 2004-09-14 Chk Group, Inc. Method of treating arsenic-contaminated waters
US6843923B2 (en) 2001-08-03 2005-01-18 Canadus Technologies Llc Compositions for removing metal ions from aqueous process solutions and methods of use thereof
US6858147B2 (en) 2001-08-03 2005-02-22 Dispersion Technology, Inc. Method for the removal of heavy metals from aqueous solution by means of silica as an adsorbent in counter-flow selective dialysis
JP2003055051A (ja) 2001-08-08 2003-02-26 Tokyo Yogyo Co Ltd 焼成活性炭ブロックフィルタ、焼成活性炭ブロックフィルタの製造方法、焼成活性炭ブロックフィルタを有する浄水器
DE10141117A1 (de) 2001-08-22 2003-03-13 Schott Glas Antimikrobielles Silicatglas und dessen Verwendung
US6914034B2 (en) 2001-08-27 2005-07-05 Calgon Carbon Corporation Adsorbents for removing heavy metals and methods for producing and using the same
US7429330B2 (en) 2001-08-27 2008-09-30 Calgon Carbon Corporation Method for removing contaminants from fluid streams
US20050067347A1 (en) * 2001-09-10 2005-03-31 Sophie Vanhulle Sustainable process for the treatment and detoxification of liquid waste
US6576092B2 (en) 2001-09-13 2003-06-10 The United States Of America As Represented By The U.S. Department Of Energy Method for removal of mercury from various gas streams
US6942840B1 (en) 2001-09-24 2005-09-13 Ada Technologies, Inc. Method for removal and stabilization of mercury in mercury-containing gas streams
US7476311B2 (en) 2001-09-26 2009-01-13 Wrt International Llc Arsenic removal from aqueous media using chemically treated zeolite materials
US6821434B1 (en) 2001-10-10 2004-11-23 Sandia Corporation System for removal of arsenic from water
US6562403B2 (en) 2001-10-15 2003-05-13 Kansas State University Research Foundation Synthesis of substantially monodispersed colloids
WO2003095116A2 (en) 2001-10-22 2003-11-20 The C & M Group, Llc Mediated electrochemical oxidation of organic waste materials
JP2003155467A (ja) 2001-11-26 2003-05-30 Fujino Kinzoku Kk イオン発生体およびその製造方法
US7241629B2 (en) 2001-12-20 2007-07-10 Corning Incorporated Detectable labels, methods of manufacture and use
AU2002361689A1 (en) 2002-01-04 2003-07-30 University Of Dayton Non-toxic corrosion protection pigments based on cobalt
US6790420B2 (en) 2002-02-07 2004-09-14 Breen Energy Solutions, Llc Control of mercury and other elemental metal emissions from combustion devices by oxidation
US20030149406A1 (en) 2002-02-07 2003-08-07 Lucie Martineau Multi-layer dressing as medical drug delivery system
US20030180213A1 (en) 2002-02-11 2003-09-25 Carnes Corrie L. High surface area mixed metal oxides and hydroxides
US6808692B2 (en) 2002-02-14 2004-10-26 Oehr Klaus H Enhanced mercury control in coal-fired power plants
US6919029B2 (en) 2002-02-14 2005-07-19 Trustees Of Stevens Institute Of Technology Methods of preparing a surface-activated titanium oxide product and of using same in water treatment processes
US6800204B2 (en) 2002-02-15 2004-10-05 Clear Water Filtration Systems Composition and process for removing arsenic and selenium from aqueous solution
AUPS057002A0 (en) 2002-02-18 2002-03-07 Dudley Mills Pty Ltd Tablets and granules for treating swimming pool water
US6960329B2 (en) 2002-03-12 2005-11-01 Foster Wheeler Energy Corporation Method and apparatus for removing mercury species from hot flue gas
JP4236857B2 (ja) * 2002-03-22 2009-03-11 三井金属鉱業株式会社 セリウム系研摩材およびその製造方法
DE60213478T2 (de) * 2002-03-22 2007-08-16 Ashimori Industry Co. Ltd. Sicherheitsgurtaufroller
US7060233B1 (en) 2002-03-25 2006-06-13 Tda Research, Inc. Process for the simultaneous removal of sulfur and mercury
AU2003262163A1 (en) * 2002-04-10 2003-10-27 Eagle-Picher Filtration And Minerals, Inc. Removal of arsenic from drinking and process water
US6861002B2 (en) 2002-04-17 2005-03-01 Watervisions International, Inc. Reactive compositions for fluid treatment
US7655594B2 (en) 2002-05-03 2010-02-02 Emory University Materials for degrading contaminants
FR2839507B1 (fr) 2002-05-07 2004-07-23 Omnium Traitement Valorisa Procede de traitement des eaux contenant du fer, du manganese et de l'arsenic
US7279129B2 (en) 2002-05-14 2007-10-09 Nanoscale Corporation Method and apparatus for control of chemical or biological warfare agents
US7025943B2 (en) 2002-05-15 2006-04-11 The Curators Of The University Of Missouri Method for preparation of nanometer cerium-based oxide particles
JP3463999B1 (ja) 2002-05-16 2003-11-05 三井金属鉱業株式会社 セリウム系研摩材の製造方法
US20040161474A1 (en) 2002-05-24 2004-08-19 Moerck Rudi E. Rare earth metal compounds methods of making, and methods of using the same
US20040043914A1 (en) * 2002-05-29 2004-03-04 Lonza Inc. Sustained release antimicrobial composition including a partially halogenated hydantoin and a colorant
US6860924B2 (en) * 2002-06-07 2005-03-01 Nanoscale Materials, Inc. Air-stable metal oxide nanoparticles
US7304201B2 (en) * 2002-06-12 2007-12-04 University Of Florida Research Foundation, Inc. Phototherapy bandage
US7183235B2 (en) 2002-06-21 2007-02-27 Ada Technologies, Inc. High capacity regenerable sorbent for removing arsenic and other toxic ions from drinking water
JP3995550B2 (ja) 2002-07-19 2007-10-24 東北電力株式会社 ホウ素含有水の処理方法及び処理装置
JP3995554B2 (ja) 2002-07-25 2007-10-24 東北電力株式会社 ホウ素含有水の処理方法
WO2004011120A1 (en) 2002-07-26 2004-02-05 Mark Hernandez Removing metals from solution using metal binding compounds and sorbents therefor
ES2393749T3 (es) 2002-08-02 2012-12-27 University Of South Carolina Producción de agua purificada y productos químicos de alto valor a partir de agua salada
DE20213145U1 (de) 2002-08-27 2003-01-09 Trw Automotive Safety Sys Gmbh Airbag-Modul sowie Baugruppe aus einem Lenkrad und einem Airbag-Modul
US7101415B2 (en) 2002-08-30 2006-09-05 Matheson Tri-Gas, Inc. Methods for regenerating process gas purifier materials
US7534453B1 (en) 2002-09-05 2009-05-19 University Of Central Florida Research Foundation, Inc. Cerium oxide nanoparticles and use in enhancing cell survivability
US20050058689A1 (en) * 2003-07-03 2005-03-17 Reactive Surfaces, Ltd. Antifungal paints and coatings
US20040045906A1 (en) * 2002-09-10 2004-03-11 Phil Wiseman Compositions and methods for the removal of colorants from solution
WO2004024289A2 (en) 2002-09-16 2004-03-25 Wayne Ernest Conrad Method and apparatus for treating water
WO2004026464A1 (en) 2002-09-18 2004-04-01 Wisconsin Alumni Research Foundation Removal of arsenic and other anions using novel adsorbents
US6843919B2 (en) * 2002-10-04 2005-01-18 Kansas State University Research Foundation Carbon-coated metal oxide nanoparticles
US6827766B2 (en) 2002-10-08 2004-12-07 United States Air Force Decontaminating systems containing reactive nanoparticles and biocides
US6824690B1 (en) 2002-10-11 2004-11-30 Sandia Corporation Zirconium-modified materials for selective adsorption and removal of aqueous arsenic
AU2003286657A1 (en) * 2002-10-24 2004-05-13 Charlene W. Bayer Filters and methods of making and using the same
US6946013B2 (en) 2002-10-28 2005-09-20 Geo2 Technologies, Inc. Ceramic exhaust filter
US7431758B2 (en) 2002-10-28 2008-10-07 Nissan Chemical Industries, Ltd. Cerium oxide particles and production method therefor
US20040091417A1 (en) * 2002-11-07 2004-05-13 Nanoproducts Corporation Nanotechnology for agriculture, horticulture, and pet care
WO2004048492A1 (ja) 2002-11-25 2004-06-10 Shiseido Company, Ltd. 素材の表面改質方法
AU2003298800B2 (en) 2002-12-02 2007-11-29 Altairnano, Inc. Rare earth compositions and structures for removing phosphates from water
US6849187B2 (en) 2002-12-10 2005-02-01 Engelhard Corporation Arsenic removal media
JP5129926B2 (ja) 2002-12-12 2013-01-30 インテグリス・インコーポレーテッド 多孔質焼結コンポジット材料
US6896809B2 (en) * 2002-12-20 2005-05-24 Providence Health System - Oregon Methods for purifying chitosan
US6863825B2 (en) * 2003-01-29 2005-03-08 Union Oil Company Of California Process for removing arsenic from aqueous streams
US7229600B2 (en) * 2003-01-31 2007-06-12 Nanoproducts Corporation Nanoparticles of rare earth oxides
US20050126338A1 (en) 2003-02-24 2005-06-16 Nanoproducts Corporation Zinc comprising nanoparticles and related nanotechnology
WO2005021435A2 (en) 2003-02-25 2005-03-10 Emory University Compositions materials incorporating the compositions, and methods of using the compositions and materials
US7473474B2 (en) 2003-02-25 2009-01-06 Quick-Med Technologies, Inc. Antifungal gypsum board
DE602004028298D1 (de) 2003-03-07 2010-09-02 Seldon Technologies Llc Reinigung von Flüssigkeiten mit Nanomaterialien
FR2852256B1 (fr) 2003-03-10 2007-01-26 Cie Ind D Applic Thermiques Ci Ensemble de filtration et de traitement de composes organiques, son procede de fabrication et appareil de conditionnement d'air equipe d'un tel ensemble
US6908560B2 (en) 2003-03-12 2005-06-21 Basin Water, Inc. Zero brine, zero rinse water process for treatment of contaminated drinking water for removal of arsenic
CA2518562C (en) * 2003-03-12 2014-08-05 Queen's University At Kingston Method of decomposing organophosphorus compounds
JP2004305915A (ja) 2003-04-07 2004-11-04 Shin Nihon Salt Co Ltd セリウム水和酸化物含有濾過材
DE10316156B3 (de) 2003-04-09 2004-10-14 Beiersdorf Ag Antimikrobiell ausgerüstete Polymermaterialien und deren Verwendung als Wundauflage
KR20060015514A (ko) 2003-04-18 2006-02-17 메르크 파텐트 게엠베하 항미생물 안료
WO2004096433A1 (ja) 2003-05-01 2004-11-11 Nihon Kaisui Co., Ltd. 吸着剤及びその製造方法
JP2005288363A (ja) 2004-04-01 2005-10-20 Nihon Kaisui:Kk 砒素吸着剤及びその製造方法
JP2004330012A (ja) 2003-05-01 2004-11-25 Shin Nihon Salt Co Ltd ホウ素吸着剤及びその製造方法
JP2005028312A (ja) 2003-07-08 2005-02-03 Shin Nihon Salt Co Ltd フッ素吸着剤及びその製法
US7341977B2 (en) * 2003-06-20 2008-03-11 Nanoscale Corporation Method of sorbing sulfur compounds using nanocrystalline mesoporous metal oxides
JP4146302B2 (ja) 2003-07-02 2008-09-10 日本化学産業株式会社 クロムエッチング廃液の処理方法
US8796030B2 (en) 2003-07-12 2014-08-05 Parallel Synthesis Technologies, Inc. Methods for optically encoding an object with upconverting materials and compositions used therein
JP4434869B2 (ja) 2003-07-17 2010-03-17 昭和電工株式会社 酸化セリウム研磨材の製造方法及び得られる酸化セリウム研磨材
TWI332981B (en) 2003-07-17 2010-11-11 Showa Denko Kk Method for producing cerium oxide abrasives and cerium oxide abrasives obtained by the method
EP1648969B1 (en) 2003-07-30 2008-08-27 DataLase Ltd Laser-arkable compositions
TW200520292A (en) * 2003-08-08 2005-06-16 Rovcal Inc High capacity alkaline cell
US20060257728A1 (en) 2003-08-08 2006-11-16 Rovcal, Inc. Separators for use in alkaline cells having high capacity
US7101493B2 (en) 2003-08-28 2006-09-05 Afton Chemical Corporation Method and composition for suppressing coal dust
US7256049B2 (en) 2003-09-04 2007-08-14 Tandem Labs Devices and methods for separating phospholipids from biological samples
US7368412B2 (en) 2003-09-04 2008-05-06 Battelle Energy Alliance, Llc High capacity adsorption media and method of producing
DE602004030264D1 (de) 2003-09-12 2011-01-05 Z Medica Corp Teilweise hydriertes hämostatisches mittel
US7033419B1 (en) 2003-09-16 2006-04-25 The United States Of America As Represented By The United States Department Of Energy Method for high temperature mercury capture from gas streams
KR100469077B1 (ko) 2003-09-16 2005-02-02 에이치투오 테크놀로지스 엘엘씨 철 또는 알루미늄 결합 리그노셀룰로즈 미디아 제조방법
WO2005030655A1 (en) 2003-09-22 2005-04-07 Buckman Laboratories International, Inc. Use of cerium salts to inhibit manganese deposition in water systems
US6855665B1 (en) 2003-09-23 2005-02-15 Alexander Blake Compositions to remove radioactive isotopes and heavy metals from wastewater
US20050069464A1 (en) 2003-09-25 2005-03-31 Obee Timothy N. Photocatalytic oxidation of contaminants through selective desorption of water utilizing microwaves
US7291315B2 (en) 2003-09-25 2007-11-06 Carrier Corporation System to enhance the photocatalytic oxidation rate of contaminants through selective desorption of water utilizing microwaves
US7014782B2 (en) * 2003-10-23 2006-03-21 Joseph A. D'Emidio Point-of-use water treatment assembly
US7025800B2 (en) * 2003-10-24 2006-04-11 Georgia Tech Research Corporation Methods of measuring the diffusion rate and partition coefficient of an analyte into a polymer and methods of forming a filter media
WO2005042130A1 (en) 2003-10-31 2005-05-12 Metal Alloy Reclaimers, Inc Ii Process for reduction of inorganic contaminants from waste streams
US7732372B2 (en) 2003-11-26 2010-06-08 Cabot Corporation Particulate absorbent materials
DE102004055291A1 (de) 2003-12-09 2005-07-14 Merck Patent Gmbh Gefärbte mikrostrukturierte Effektpigmente
US8597778B2 (en) 2003-12-15 2013-12-03 Asahi Kasei Chemicals Corporation Porous formed article and method for production thereof
US7067294B2 (en) 2003-12-23 2006-06-27 The United States Of America As Represented By The Secretary Of The Navy Catalytic surfaces for active protection from toxins
US7591952B2 (en) 2003-12-23 2009-09-22 Wing Yip Young Water treatment mixture and methods and system for use
US7438828B2 (en) 2003-12-23 2008-10-21 Wing Yip Young Water treatment mixture
US7468413B2 (en) 2004-01-30 2008-12-23 Khodia Inc. Rare earth aggregate formulation using di-block copolmers
US20070169626A1 (en) 2004-02-20 2007-07-26 Sullivan Thomas M Apparatus and method of cleansing contaminated air using microwave radiation
EP1568660B1 (en) 2004-02-24 2010-12-15 Rohm And Haas Company Method for removal of arsenic from water
US6977039B2 (en) 2004-03-30 2005-12-20 Natural Choice Corporation Fluid filter apparatus and method
US7037480B2 (en) * 2004-04-08 2006-05-02 Sunoco Inc. (R&M) Calcium chloride purification
US20060021928A1 (en) 2004-04-12 2006-02-02 David Nelson Efficient Water Filters
US7291272B2 (en) 2004-05-07 2007-11-06 Orica Australia Pty Ltd. Inorganic contaminant removal from water
US20050257724A1 (en) 2004-05-24 2005-11-24 Guinther Gregory H Additive-induced control of NOx emissions in a coal burning utility furnace
AR047875A1 (es) 2004-06-04 2006-03-01 Rovcal Inc Celdas alcalinas que presentan alta capacidad
US7783883B2 (en) * 2004-06-25 2010-08-24 Emc Corporation System and method for validating e-mail messages
US20060000763A1 (en) * 2004-06-30 2006-01-05 Rinker Edward B Gravity flow carbon block filter
US8167141B2 (en) * 2004-06-30 2012-05-01 Brita Lp Gravity flow filter
DE102004035905A1 (de) * 2004-07-20 2006-02-16 Biotronik Vi Patent Ag Magnesiumhaltiges Wundauflagematerial
KR100710215B1 (ko) 2004-07-30 2007-04-20 엘지전자 주식회사 의류 건조기 및 그의 제어 방법
US20060049091A1 (en) 2004-09-03 2006-03-09 Cheetham Jeffrey K Reactive adsorbent for heavy elements
WO2006044784A2 (en) * 2004-10-18 2006-04-27 Nanoscale Materials, Inc. Metal oxide nanoparticles for smoke clearing and fire suppression
WO2006050477A2 (en) 2004-11-03 2006-05-11 K2 Concepts Anti-microbial compositions and methods of making and using the same
US7094383B2 (en) 2004-12-14 2006-08-22 Ctci Foundation Method for preparing pure, thermally stable and high surface area ceria
US7329356B2 (en) * 2004-12-21 2008-02-12 Aquagems Laboratories, Llc Flocculating agent for clarifying the water of man-made static water bodies
WO2006069376A2 (en) 2004-12-22 2006-06-29 University Of Cincinnati Improved superprimer
US7129684B2 (en) 2005-01-10 2006-10-31 Ana Semiconductor Variable start-up circuit for switching regulators
US20060178609A1 (en) 2005-02-09 2006-08-10 Z-Medica, Llc Devices and methods for the delivery of molecular sieve materials for the formation of blood clots
US8870972B2 (en) 2005-03-02 2014-10-28 Airdye Intellectual Property, Llc Sublimation dying of textiles and other materials
US8323333B2 (en) 2005-03-03 2012-12-04 Icon Medical Corp. Fragile structure protective coating
US20060199301A1 (en) 2005-03-07 2006-09-07 Basheer Rafil A Methods of making a curable composition having low coefficient of thermal expansion and an integrated circuit and a curable composition and integrated circuit made there from
US7368388B2 (en) 2005-04-15 2008-05-06 Small Robert J Cerium oxide abrasives for chemical mechanical polishing
US7160465B2 (en) 2005-04-21 2007-01-09 The United States Of America As Represented By The Secretary Of The Navy Materials for removing toxic metals from wastewater
US20090286678A1 (en) * 2005-05-02 2009-11-19 Symyx Technologies, Inc. High Surface Area Metal And Metal Oxide Materials and Methods of Making the Same
US7713399B2 (en) 2005-05-12 2010-05-11 Saudi Arabian Oil Company Process for treating a sulfur-containing spent caustic refinery stream using a membrane electrolyzer powered by a fuel cell
US7491335B2 (en) 2005-05-13 2009-02-17 The Board Of Regents Of The University Of Texas System Removal of arsenic from water with oxidized metal coated pumice
JP2006320847A (ja) 2005-05-19 2006-11-30 Kobelco Eco-Solutions Co Ltd 有機ヒ素含有水の処理方法とその装置
GB2426469A (en) 2005-05-28 2006-11-29 Oluwole Shamusi Fagbemi Cabin air purifier
US20060275564A1 (en) 2005-06-01 2006-12-07 Michael Grah Method of activating the shrink characteristic of a film
WO2007002705A2 (en) 2005-06-24 2007-01-04 Inframat Corporation Antimicrobial hydrogel, method op manufacture and its use
US7344643B2 (en) * 2005-06-30 2008-03-18 Siemens Water Technologies Holding Corp. Process to enhance phosphorus removal for activated sludge wastewater treatment systems
US20070012631A1 (en) 2005-07-15 2007-01-18 Coffey Richard T Methods for controlling pH in water sanitized by chemical or electrolytic chlorination
US7338603B1 (en) * 2005-07-27 2008-03-04 Molycorp, Inc. Process using rare earths to remove oxyanions from aqueous streams
US7252694B2 (en) 2005-08-05 2007-08-07 3M Innovative Properties Company Abrasive article and methods of making same
KR100725699B1 (ko) 2005-09-02 2007-06-07 주식회사 엘지화학 일액형 ｃｍｐ 슬러리용 산화 세륨 분말, 그 제조방법,이를 포함하는 일액형 ｃｍｐ 슬러리 조성물, 및 상기슬러리를 사용하는 얕은 트랜치 소자 분리방법
US20070114179A1 (en) * 2005-09-07 2007-05-24 Badger Timothy J Removal of fluoride ions from aqueous solutions
US7156994B1 (en) * 2005-09-30 2007-01-02 Archer Virgil L Drinking water filter used with tap water and other water sources
US7378372B2 (en) 2005-10-11 2008-05-27 Layne Christensen Company Filter and sorbent for removal of contaminants from a fluid
JP2009513284A (ja) * 2005-10-26 2009-04-02 ナノスケール マテリアルズ アイエヌシー． ナノ結晶金属酸化物を用いた臭気処理
US7481939B2 (en) * 2005-11-07 2009-01-27 Patrick Haley Method for removal of phosphate from bodies of water by topical application of phosphate scavenging compositions with a hand held, hose end sprayer
US7704920B2 (en) 2005-11-30 2010-04-27 Basf Catalysts Llc Pollutant emission control sorbents and methods of manufacture
IL172552A0 (en) 2005-12-13 2006-04-10 Univ Ben Gurion Manganese oxide-cerium oxide composite
US20070142783A1 (en) 2005-12-16 2007-06-21 Huey Raymond J Devices and methods for promoting the formation of blood clots at dialysis access sites
JP4923948B2 (ja) 2006-01-05 2012-04-25 株式会社デンソー ガスセンサ素子
US20070158251A1 (en) 2006-01-09 2007-07-12 Chau Yiu C Water treatment unit for bottle
US20070167971A1 (en) 2006-01-17 2007-07-19 Raymond Huey Devices and methods for promoting the formation of blood clots in esophageal varices
US7481934B2 (en) 2006-01-20 2009-01-27 Renewable Fibers, Llc Methods for treatment of wastewater with powdered natural lignocellulosic material
WO2007120910A1 (en) * 2006-04-14 2007-10-25 Board Of Regents Of The Nevada System Of Higher Education, On Behalf Of The Univ. Of Nevada, Reno Arsenic absorbing composition and methods of use
EP2043950A4 (en) 2006-06-06 2009-09-16 Nanoscale Corp SYNTHESIS OF NANOCRYSTALLINE MATERIALS WITH LARGE SURFACE FOR BATTERY APPLICATIONS
MY151890A (en) 2006-06-23 2014-07-14 Unilever Plc Filter and process to prepare the same
US20070298085A1 (en) 2006-06-27 2007-12-27 Lestage David J Skin Sanitizing Object
JP2008050348A (ja) * 2006-07-27 2008-03-06 Fujitsu Ltd 植物の防疫剤、植物の防疫方法及び植物の防疫システム、並びに、植物及び植物の栽培方法
EP1892780A3 (en) * 2006-08-23 2010-11-10 Rovcal, Inc. Copper-manganese mixed oxide cathode material for use in alkaline cells having high capacity
US20080097271A1 (en) * 2006-10-20 2008-04-24 Z-Medica Corporation Devices and methods for the delivery of hemostatic agents to bleeding wounds
US8066874B2 (en) 2006-12-28 2011-11-29 Molycorp Minerals, Llc Apparatus for treating a flow of an aqueous solution containing arsenic
US8703634B2 (en) 2007-02-21 2014-04-22 The Regents Of The University Of California Hemostatic compositions and methods of use
JP2008280518A (ja) 2007-04-11 2008-11-20 Fujifilm Corp 有機顔料水分散液及びその製造方法、並びにこれを用いた着色コーティング用組成物及び塗布物
US20080254147A1 (en) 2007-04-13 2008-10-16 Z-Medica Corporation Method of providing hemostasis in anti-coagulated blood
TW200906421A (en) 2007-04-13 2009-02-16 Raymond J Huey Method of providing hemostasis in anti-coagulated blood
CA2625522A1 (en) 2007-04-20 2008-10-20 Rohm And Haas Company Method for removing phosphate from aqueous solutions
US7820100B2 (en) 2007-05-17 2010-10-26 Garfield Industries, Inc. System and method for photocatalytic oxidation air filtration using a substrate with photocatalyst particles powder coated thereon
US20080302267A1 (en) 2007-06-05 2008-12-11 Defalco Frank G Compositions and processes for deposition of metal ions onto surfaces of conductive substrates
US8084392B2 (en) * 2007-07-06 2011-12-27 Ep Minerals, Llc Crystalline silica-free diatomaceous earth filter aids and methods of manufacturing the same
US20090012204A1 (en) * 2007-07-06 2009-01-08 Lynntech, Inc. Functionalization of polymers with reactive species having bond-stabilized decontamination activity
MX2010002827A (es) * 2007-09-12 2010-08-31 Transluminal Technologies Llc Dispositivo de cierre, aparato de despliegue y metodo para despliegue de dispositivo de cierre.
US20090101837A1 (en) * 2007-10-18 2009-04-23 Kostantinos Kourtakis Multilayer identification marker compositions
JP2011502339A (ja) 2007-10-29 2011-01-20 アーデント コンセプツ、インコーポレイテッド コンプライアント接点及びアセンブリ
US8877508B2 (en) * 2007-10-30 2014-11-04 The Invention Science Fund I, Llc Devices and systems that deliver nitric oxide
US8252087B2 (en) 2007-10-31 2012-08-28 Molycorp Minerals, Llc Process and apparatus for treating a gas containing a contaminant
US20090107925A1 (en) 2007-10-31 2009-04-30 Chevron U.S.A. Inc. Apparatus and process for treating an aqueous solution containing biological contaminants
US8349764B2 (en) 2007-10-31 2013-01-08 Molycorp Minerals, Llc Composition for treating a fluid
US20090107919A1 (en) 2007-10-31 2009-04-30 Chevron U.S.A. Inc. Apparatus and process for treating an aqueous solution containing chemical contaminants
WO2009064845A2 (en) 2007-11-16 2009-05-22 Bernstein Eric F Sterilizing compositions comprising phosphors for converting electromagnetic radiation to uvc radiation and methods for using the same
US20100042206A1 (en) * 2008-03-04 2010-02-18 Icon Medical Corp. Bioabsorbable coatings for medical devices
WO2010020513A1 (en) 2008-08-22 2010-02-25 Unilever Nv Particulate filter
US8236376B2 (en) * 2008-09-02 2012-08-07 Pascale Industries, Inc. Production of nanoparticle-coated yarns
JP2010083741A (ja) 2008-10-03 2010-04-15 Mitsui Mining & Smelting Co Ltd 酸化セリウム及びその製造方法
JP5349604B2 (ja) 2008-10-17 2013-11-20 ユニリーバー・ナームローゼ・ベンノートシヤープ 炭素ブロックフィルター
US7588744B1 (en) 2008-12-08 2009-09-15 Layne Christensen Company Method of recovering phosphate for reuse as a fertilizer
JP2012532201A (ja) 2009-07-06 2012-12-13 モリーコープ ミネラルズ エルエルシー 希土類含有粒子を形成する方法

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3916585A (en) * 1973-10-24 1975-11-04 Norton Co Sintered abrasive containing oxides from the system ceria, alumina, zirconia
CN1155519A (zh) * 1996-01-16 1997-07-30 三菱重工业株式会社 处理含砷废水的方法

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
BUET-UNU INTERNATIONAL WORKSHOP ON TECHNOLOGIES FOR ARSENRIC REMOVAL FROM DRINKING WATER Author M.FEROAZE AHMEDAN OVERVIEW OR ARSENRICREMOVALTECHNOLOGIES IN BANGLADESH AND INDIA,251.269, 2001 *

Also Published As

Publication number Publication date
AU2011202112A1 (en) 2011-05-26
US20100044317A1 (en) 2010-02-25
US20050133455A1 (en) 2005-06-23
AU2009251182B2 (en) 2011-02-10
US7686976B2 (en) 2010-03-30
US20060207945A1 (en) 2006-09-21
US7300589B2 (en) 2007-11-27
EP1590299A1 (en) 2005-11-02
US6863825B2 (en) 2005-03-08
US20080093580A1 (en) 2008-04-24
AU2004207832B2 (en) 2009-10-29
CN1745038A (zh) 2006-03-08
AU2004207832A1 (en) 2004-08-12
AU2011202112B2 (en) 2012-11-15
AU2009251182A1 (en) 2010-01-21
US8475658B2 (en) 2013-07-02
MXPA05007988A (es) 2006-01-27
US20040144729A1 (en) 2004-07-29
US7048853B2 (en) 2006-05-23
WO2004067452A1 (en) 2004-08-12
EP2218686A1 (en) 2010-08-18

Similar Documents

Publication Publication Date Title
CN100339318C (zh) 从水流中除去砷的方法
US7713423B2 (en) Reactive filtration
CA2618222C (en) Process using rare earths to remove oxyanions from aqueous streams
US20100187178A1 (en) Process for removing and sequestering contaminants from aqueous streams
US10577259B2 (en) Removal of arsenic from aqueous streams with cerium (IV) oxide compositions
WO2003086564A2 (en) Removal of arsenic from drinking and process water
AU2008230064A1 (en) Apparatus for treating a flow of an aqueous solution containing arsenic
WO2017070345A1 (en) Methods for treating selenocyanate in wastewater
KR20050107459A (ko) 현탁액에 오염물질을 함유하는 액상 유출물을 처리하기위한 방법 및 시스템
US11944952B2 (en) Removing contaminants from water with adsorbents
RU2404928C2 (ru) Способ очистки загрязненной среды от органических веществ
Kasmara et al. Acute Toxicity Investigation of Landfill Leachates Treated with Fine Bubbles
WO2001083376A2 (en) Method of reducing contaminants in drinking water
Prokopov et al. University of Food Technologies, Department of Environmental Engineering, Plovdiv, Bulgaria WASTEWATER COD REDUCTION BY ADSORPTION ON COMMERCIAL ACTIVATED CARBON

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant
ASS Succession or assignment of patent right

Owner name: MOLYCAOP MINERALS CO., LTD.

Free format text: FORMER OWNER: UNION OIL CO

Effective date: 20100601

C41 Transfer of patent application or patent right or utility model
COR Change of bibliographic data

Free format text: CORRECT: ADDRESS; FROM: CALIFORNIA, USA TO: COLORADE, USA

TR01 Transfer of patent right

Effective date of registration: 20100601

Address after: American Colorado

Patentee after: Molycorp minerals limited liability company

Address before: American California

Patentee before: Union Oil Co. of California

CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20070926

Termination date: 20210128

CF01 Termination of patent right due to non-payment of annual fee