AU8941091A - Method for purifying concentrated, aqueous and used solutions of chromic acid, and solutions thereby purified - Google Patents

Method for purifying concentrated, aqueous and used solutions of chromic acid, and solutions thereby purified

Info

Publication number
AU8941091A
AU8941091A AU89410/91A AU8941091A AU8941091A AU 8941091 A AU8941091 A AU 8941091A AU 89410/91 A AU89410/91 A AU 89410/91A AU 8941091 A AU8941091 A AU 8941091A AU 8941091 A AU8941091 A AU 8941091A
Authority
AU
Australia
Prior art keywords
solutions
purified
aqueous
chromic acid
purifying concentrated
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.)
Abandoned
Application number
AU89410/91A
Inventor
Patrick Andre Rene Benaben
Jean-Pierre Emmanuel
Joseph Popakul
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.)
ISOCHROME
Original Assignee
ISOCHROME
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 ISOCHROME filed Critical ISOCHROME
Publication of AU8941091A publication Critical patent/AU8941091A/en
Abandoned legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D21/00—Processes for servicing or operating cells for electrolytic coating
    • C25D21/16—Regeneration of process solutions
    • C25D21/20—Regeneration of process solutions of rinse-solutions
    • 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
    • C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
    • 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
    • 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
    • C02F2101/203—Iron or iron compound
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/16—Nature of the water, waste water, sewage or sludge to be treated from metallurgical processes, i.e. from the production, refining or treatment of metals, e.g. galvanic wastes
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/06—Controlling or monitoring parameters in water treatment pH

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Electroplating And Plating Baths Therefor (AREA)
  • Treatment Of Water By Oxidation Or Reduction (AREA)
  • Removal Of Specific Substances (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)
AU89410/91A 1990-11-16 1991-11-08 Method for purifying concentrated, aqueous and used solutions of chromic acid, and solutions thereby purified Abandoned AU8941091A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9014594A FR2669323B1 (en) 1990-11-16 1990-11-16 PROCESS FOR PURIFYING USED AQUEOUS SOLUTIONS OF CHROMIC ACID AND SOLUTIONS THUS PURIFIED.
FR9014594 1990-11-16

Publications (1)

Publication Number Publication Date
AU8941091A true AU8941091A (en) 1992-06-11

Family

ID=9402482

Family Applications (1)

Application Number Title Priority Date Filing Date
AU89410/91A Abandoned AU8941091A (en) 1990-11-16 1991-11-08 Method for purifying concentrated, aqueous and used solutions of chromic acid, and solutions thereby purified

Country Status (3)

Country Link
AU (1) AU8941091A (en)
FR (1) FR2669323B1 (en)
WO (1) WO1992008825A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RO117687B1 (en) * 2000-10-30 2002-06-28 I. Petrişor Paul Lungulescu Process and installation for recovering metal from waste chromium plating solutions

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7203993A (en) * 1972-03-24 1973-09-26 Treating chromium contg ind effluents - by neutralising with ammonia, heating and drying
US4337129A (en) * 1979-05-08 1982-06-29 The United States Of America As Represented By The Secretary Of The Interior Regeneration of waste metallurgical process liquor
JPS55161074A (en) * 1979-06-04 1980-12-15 Hitachi Ltd Recovering method for waste chromate solution
AT389100B (en) * 1987-06-09 1989-10-10 Koerner Chemieanlagen METAL UNIT AND NEUTRALIZATION SYSTEM FOR MULTIPLE METALS CONTAINING METALS

Also Published As

Publication number Publication date
FR2669323A1 (en) 1992-05-22
FR2669323B1 (en) 1993-06-18
WO1992008825A1 (en) 1992-05-29

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