DE3069637D1 - Chromate removal from concentrated chlorate solution by chemical precipitation - Google Patents

Chromate removal from concentrated chlorate solution by chemical precipitation

Info

Publication number
DE3069637D1
DE3069637D1 DE8080303055T DE3069637T DE3069637D1 DE 3069637 D1 DE3069637 D1 DE 3069637D1 DE 8080303055 T DE8080303055 T DE 8080303055T DE 3069637 T DE3069637 T DE 3069637T DE 3069637 D1 DE3069637 D1 DE 3069637D1
Authority
DE
Germany
Prior art keywords
chemical precipitation
chlorate solution
chromate removal
concentrated
concentrated chlorate
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
Application number
DE8080303055T
Other languages
English (en)
Inventor
Jerry John Kaczur
Sudhir Kumar Mendiratta
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.)
Olin Corp
Original Assignee
Olin Corp
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 Olin Corp filed Critical Olin Corp
Application granted granted Critical
Publication of DE3069637D1 publication Critical patent/DE3069637D1/de
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B1/00—Electrolytic production of inorganic compounds or non-metals
    • C25B1/01—Products
    • C25B1/24—Halogens or compounds thereof
    • C25B1/26—Chlorine; Compounds thereof
    • C25B1/265—Chlorates
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B11/00—Oxides or oxyacids of halogens; Salts thereof
    • C01B11/12—Chloric acid
    • C01B11/14—Chlorates
    • C01B11/145—Separation; Crystallisation; Purification, After-treatment; Stabilisation by additives
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G37/00—Compounds of chromium
    • C01G37/02—Oxides or hydrates thereof
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B15/00—Operating or servicing cells
    • C25B15/08—Supplying or removing reactants or electrolytes; Regeneration of electrolytes
    • 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
    • Y10S210/913—Chromium

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Treatment Of Water By Oxidation Or Reduction (AREA)
  • Removal Of Specific Substances (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)
DE8080303055T 1979-09-04 1980-09-02 Chromate removal from concentrated chlorate solution by chemical precipitation Expired DE3069637D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/071,910 US4259297A (en) 1979-09-04 1979-09-04 Chromate removal from concentrated chlorate solution by chemical precipitation

Publications (1)

Publication Number Publication Date
DE3069637D1 true DE3069637D1 (en) 1984-12-20

Family

ID=22104388

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8080303055T Expired DE3069637D1 (en) 1979-09-04 1980-09-02 Chromate removal from concentrated chlorate solution by chemical precipitation

Country Status (5)

Country Link
US (1) US4259297A (de)
EP (1) EP0025334B1 (de)
BR (1) BR8005587A (de)
CA (1) CA1161784A (de)
DE (1) DE3069637D1 (de)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI61855C (fi) * 1980-08-05 1982-10-11 Outokumpu Oy Foerfarande foer framstaellning av en jaernfri krom(iii)foerening
CA1242307A (en) * 1986-05-21 1988-09-27 Superior Plus Inc. / Superieur Plus Inc. Removal of chromium from cell liquor
US4773974A (en) * 1986-10-29 1988-09-27 Tenneco Canada Inc. Production of hexavalent chromium for use in chlorate cells
CA1314688C (en) * 1987-09-14 1993-03-23 Ian Harry Warren Stripping and recovery of dichromate in electrolytic chlorate systems
US5093089A (en) * 1990-07-16 1992-03-03 Chemetics International Company Ltd. Process for the separation of sulphate
CA2100948C (en) * 1992-04-22 1995-01-24 John Robert Jackson Process for chromium removal using an inorganic sulfur compound
US5254321A (en) * 1990-11-13 1993-10-19 Huron Tech Corp. Process for chromium removal using an inorganic sulfur compound
US5158687A (en) * 1991-07-11 1992-10-27 Hydrite Chemical Co. Methods of removing undesired ions from aqueous solutions
US5200088A (en) * 1991-07-15 1993-04-06 Kolene Corporation Removal of hexavalent chromium from waste material
SE511987C2 (sv) * 1993-03-09 2000-01-10 Eka Chemicals Ab Metod för avskiljning av sulfat från en vattenhaltig elektrolyt i en alkalimetallkloratprocess
US6189299B1 (en) 1998-03-10 2001-02-20 Fresh Express, Inc Apparatus for cooling and packaging bulk fresh products
US6276375B1 (en) 1998-09-01 2001-08-21 Fresh Express, Inc. Apparatus and methods for washing cores of cored lettuce heads
US6298865B1 (en) 1999-04-20 2001-10-09 Richard S. Brown Apparatus and methods for washing the cored areas of lettuce heads during harvest
US6379731B1 (en) 2000-02-18 2002-04-30 Fresh Express, Inc. Methods for vacuum gas flush treatment of fresh produce
US6435347B1 (en) 2000-02-18 2002-08-20 Fresh Express, Incorporated Container for freshly harvested respiring, leafy produce
GB201301859D0 (en) * 2013-02-01 2013-03-20 Ionex Sg Ltd Regeneration of an ion exchange column

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT199666B (de) * 1956-05-16 1958-09-25 Solvay Verfahren zur Herabsetzung des Gehaltes an Vanadium, Wolfram, Molybdän, Chrom von wässerigen Alkalisalzlösungen, insbesondere von Solen für die Chloralkalielektrolyse
FR1483643A (de) * 1965-06-17 1967-09-06
US3535216A (en) * 1967-12-08 1970-10-20 Hooker Chemical Corp Sodium dichromate and molybdic acid to increase the cathode efficiency of chlorate cells
US3728273A (en) * 1971-09-27 1973-04-17 Allied Chem Method of recovering chromium and barium values from waste barium chromate
US3843769A (en) * 1972-01-20 1974-10-22 Hooker Chemical Corp Process for removing hexavalent chromium from chlorate containing liquors
US3981965A (en) * 1972-08-17 1976-09-21 Allied Chemical Corporation Suppression of water pollution caused by solid wastes containing chromium compounds
US3896209A (en) * 1973-01-22 1975-07-22 Du Pont Reduction of hexavalent chromium
US3961029A (en) * 1973-05-21 1976-06-01 Tokico Ltd. Process for recovering chromic acid solution from a waste liquor containing chromic ions
US3891747A (en) * 1973-10-11 1975-06-24 Olin Corp Chlorate removal from alkali metal chloride solutions
JPS5247701A (en) * 1975-10-14 1977-04-15 Mazda Motor Corp Sound-proof and vibration-insulating coating materials for sheet metal s for vehicles
IT1055953B (it) * 1976-02-24 1982-01-11 Stoppani P & Co Procedimento di decontaminazione di materiale di scarto proveniente dalla lavorazione di minerali di cromo mediante trattamento conzolfo per via umida
US4086150A (en) * 1977-06-27 1978-04-25 Huron Chemicals Limited Chromate removal by precipitation
CA1112379A (en) * 1977-09-13 1981-11-10 Jesse G. Grier Chromate ion removal from aqueous chlorate solutions

Also Published As

Publication number Publication date
BR8005587A (pt) 1981-03-24
CA1161784A (en) 1984-02-07
EP0025334B1 (de) 1984-11-14
EP0025334A1 (de) 1981-03-18
US4259297A (en) 1981-03-31

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Legal Events

Date Code Title Description
8339 Ceased/non-payment of the annual fee