CA2181166A1 - Process for the treatment of metal-containing water and recovery of metals therefrom - Google Patents

Process for the treatment of metal-containing water and recovery of metals therefrom

Info

Publication number
CA2181166A1
CA2181166A1 CA002181166A CA2181166A CA2181166A1 CA 2181166 A1 CA2181166 A1 CA 2181166A1 CA 002181166 A CA002181166 A CA 002181166A CA 2181166 A CA2181166 A CA 2181166A CA 2181166 A1 CA2181166 A1 CA 2181166A1
Authority
CA
Canada
Prior art keywords
water
wastewater
metal
aluminum
recovered
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.)
Granted
Application number
CA002181166A
Other languages
French (fr)
Other versions
CA2181166C (en
Inventor
Manoranjan Misra
Mark E. Kravetz
Kang Yang
Thomas E. Mcneel
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.)
Buckman Laboratories International Inc
University and Community College System of Nevada UCCSN
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2181166A1 publication Critical patent/CA2181166A1/en
Application granted granted Critical
Publication of CA2181166C publication Critical patent/CA2181166C/en
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
    • C02F9/00—Multistage treatment of water, waste water or sewage
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G49/00—Compounds of iron
    • C01G49/009—Compounds containing, besides iron, two or more other elements, with the exception of oxygen or hydrogen
    • 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
    • C02F1/70—Treatment of water, waste water, or sewage by reduction
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2002/00—Crystal-structural characteristics
    • C01P2002/30—Three-dimensional structures
    • C01P2002/32—Three-dimensional structures spinel-type (AB2O4)
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2002/00—Crystal-structural characteristics
    • C01P2002/70—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data
    • C01P2002/77—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data by unit-cell parameters, atom positions or structure diagrams
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2002/00—Crystal-structural characteristics
    • C01P2002/80—Crystal-structural characteristics defined by measured data other than those specified in group C01P2002/70
    • C01P2002/85—Crystal-structural characteristics defined by measured data other than those specified in group C01P2002/70 by XPS, EDX or EDAX data
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/01—Particle morphology depicted by an image
    • C01P2004/03—Particle morphology depicted by an image obtained by SEM
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/42—Magnetic properties
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/60—Optical properties, e.g. expressed in CIELAB-values
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/80—Compositional purity
    • 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
    • C02F2101/20—Heavy metals or heavy metal compounds
    • 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
    • Y10S210/912—Heavy metal

Abstract

Metals contained in various wastewaters are selectively recovered as metal precipitates and/or as spinel ferrite and water suitable for discharge into the environment is obtained. High grade magnetic spinel ferrite is recovered from wastewaters having aluminum and arsenic, if present in the wastewater, removed from the wastewater. There are three process stages for the treatment of wastewater. In the first process stage, which is optional, at least a portion of at least one non-ferrous or non-ferric metal is precipitated from the wastewater by subjecting the wastewater to an oxidizing agent to increase the oxidation-reduction potential of the water, by adjusting the pH of the wastewater to a pH at which the metal precipitates from the water and by adding an organic or inorganic sulfur compound, capable of causing the metal to form a precipitate, to the water in a quantity sufficient to precipitate the metal. When aluminum is present in the wastewater, aluminum is recovered from the water by adding a reducing agent to lower the oxidation-reducing potential of the water and by adjusting the pH of the water to about 5. The aluminum which precipitates in the aqueous solution is removed from the water. In the third precipitation stage iron is recovered as spinel ferrite in an ambient temperature process by adding a reducing agent to the water, adding a soluble ferrous salt to the water, adjusting the pH to about 9-12 and oxidizing the water with an oxidizer, e.g. air, to form spinel ferrite. If aluminum and/or arsenic are present in the wastewater and are removed from the wastewater by the process, high grade magnetic spinel ferrite is recovered.
CA002181166A 1994-01-13 1995-01-12 Process for the treatment of metal-containing water and recovery of metals therefrom Expired - Fee Related CA2181166C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/181,119 US5505857A (en) 1994-01-13 1994-01-13 Process for the treatment of metal-containing water and recovery of metals therefrom
US08/181,119 1994-01-13
PCT/US1995/000485 WO1995019320A1 (en) 1994-01-13 1995-01-12 Process for the treatment of metal-containing water and recovery of metals therefrom

Publications (2)

Publication Number Publication Date
CA2181166A1 true CA2181166A1 (en) 1995-07-20
CA2181166C CA2181166C (en) 2001-03-27

Family

ID=22662982

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002181166A Expired - Fee Related CA2181166C (en) 1994-01-13 1995-01-12 Process for the treatment of metal-containing water and recovery of metals therefrom

Country Status (10)

Country Link
US (1) US5505857A (en)
EP (1) EP0797543B1 (en)
JP (1) JPH09512780A (en)
AT (1) ATE182129T1 (en)
AU (2) AU1679595A (en)
BR (1) BR9506517A (en)
CA (1) CA2181166C (en)
DE (1) DE69510819T2 (en)
ES (1) ES2136834T3 (en)
WO (1) WO1995019320A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9346062B2 (en) 2009-12-04 2016-05-24 Barrick Gold Corporation Separation of copper minerals from pyrite using air-metabisulfite treatment

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Publication number Priority date Publication date Assignee Title
US9346062B2 (en) 2009-12-04 2016-05-24 Barrick Gold Corporation Separation of copper minerals from pyrite using air-metabisulfite treatment
US10258996B2 (en) 2009-12-04 2019-04-16 Barrick Gold Corporation Separation of copper minerals from pyrite using air-metabisulfite treatment

Also Published As

Publication number Publication date
EP0797543B1 (en) 1999-07-14
ES2136834T3 (en) 1999-12-01
AU720258B2 (en) 2000-05-25
AU1210199A (en) 1999-03-25
ATE182129T1 (en) 1999-07-15
DE69510819T2 (en) 1999-11-11
EP0797543A1 (en) 1997-10-01
JPH09512780A (en) 1997-12-22
US5505857A (en) 1996-04-09
BR9506517A (en) 1997-09-09
DE69510819D1 (en) 1999-08-19
AU1679595A (en) 1995-08-01
WO1995019320A1 (en) 1995-07-20
CA2181166C (en) 2001-03-27

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