WO1990012637A3 - Electrodialytic water splitting process for the treatment of aqueous electrolytes - Google Patents

Electrodialytic water splitting process for the treatment of aqueous electrolytes Download PDF

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Publication number
WO1990012637A3
WO1990012637A3 PCT/CA1990/000116 CA9000116W WO9012637A3 WO 1990012637 A3 WO1990012637 A3 WO 1990012637A3 CA 9000116 W CA9000116 W CA 9000116W WO 9012637 A3 WO9012637 A3 WO 9012637A3
Authority
WO
WIPO (PCT)
Prior art keywords
membranes
water splitting
treatment
bipolar
salt
Prior art date
Application number
PCT/CA1990/000116
Other languages
French (fr)
Other versions
WO1990012637A2 (en
Inventor
Michael Paleologou
Richard M Berry
Original Assignee
Pulp Paper Res Inst
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
Priority claimed from US07/340,200 external-priority patent/US5006211A/en
Application filed by Pulp Paper Res Inst filed Critical Pulp Paper Res Inst
Publication of WO1990012637A2 publication Critical patent/WO1990012637A2/en
Publication of WO1990012637A3 publication Critical patent/WO1990012637A3/en

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B15/00—Peroxides; Peroxyhydrates; Peroxyacids or salts thereof; Superoxides; Ozonides
    • C01B15/04—Metal peroxides or peroxyhydrates thereof; Metal superoxides; Metal ozonides; Peroxyhydrates thereof
    • C01B15/043—Metal peroxides or peroxyhydrates thereof; Metal superoxides; Metal ozonides; Peroxyhydrates thereof of alkali metals, alkaline earth metals or magnesium or beryllium or aluminium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/42—Electrodialysis; Electro-osmosis ; Electro-ultrafiltration; Membrane capacitive deionization
    • B01D61/44—Ion-selective electrodialysis
    • B01D61/445—Ion-selective electrodialysis with bipolar membranes; Water splitting
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C11/00—Regeneration of pulp liquors or effluent waste waters
    • D21C11/0042—Fractionating or concentration of spent liquors by special methods
    • D21C11/005—Treatment of liquors with ion-exchangers

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Water Supply & Treatment (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Inorganic Chemistry (AREA)
  • Urology & Nephrology (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)

Abstract

A process for dealkalization or acidification of aqueous salt solutions or for the splitting of the salt of such solutions employs a water splitting system of bipolar membranes (3) in conjunction with ion selective membranes (2); a two-compartment cell employs cation permselective membranes (2) to define acid and base compartments with the bipolar membranes (3), and a three compartment cell employs anion permselective and cation permselective membranes to define with the bipolar membrane salt, acid and base compartments; the process has particular applicability to the dealkalization of a monosodium peroxide solution containing sodium hydroxide produced in a hydrogen peroxide generator.
PCT/CA1990/000116 1989-03-15 1990-04-09 Electrodialytic water splitting process for the treatment of aqueous electrolytes WO1990012637A2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US32375689A 1989-03-15 1989-03-15
US340,200 1989-04-19
US07/340,200 US5006211A (en) 1989-04-19 1989-04-19 Electrodialylic water splitting process for the treatment of aqueous electrolytes

Publications (2)

Publication Number Publication Date
WO1990012637A2 WO1990012637A2 (en) 1990-11-01
WO1990012637A3 true WO1990012637A3 (en) 1991-01-10

Family

ID=26984135

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CA1990/000116 WO1990012637A2 (en) 1989-03-15 1990-04-09 Electrodialytic water splitting process for the treatment of aqueous electrolytes

Country Status (1)

Country Link
WO (1) WO1990012637A2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993021106A1 (en) * 1992-04-15 1993-10-28 A. Ahlstrom Corporation Production of bleaching chemicals on site at a pulp mill
SE9303766L (en) * 1993-11-15 1995-05-16 Eka Nobel Ab Procedure for purification and recirculation of solutions
SE9500732L (en) * 1995-02-27 1996-08-28 Eka Chemicals Ab Procedure for the treatment of liquids

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2829095A (en) * 1955-09-03 1958-04-01 Noguchi Kenkyu Jo Process for the production of acidic and alkaline solution from salt solution by multi-compartment electrolysis
US4238305A (en) * 1979-10-29 1980-12-09 Allied Chemical Corporation Electrodialytic process for the conversion of impure soda values to sodium hydroxide and carbon dioxide
US4391680A (en) * 1981-12-03 1983-07-05 Allied Corporation Preparing alkali metal hydroxide by water splitting and hydrolysis
EP0141517A1 (en) * 1983-09-23 1985-05-15 Imperial Chemical Industries Plc Preparation of alkali metal silicates
WO1988007975A1 (en) * 1987-04-15 1988-10-20 Schweizerische Aluminium Ag Process for reducing the impurities in lyes in the bayer process

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2829095A (en) * 1955-09-03 1958-04-01 Noguchi Kenkyu Jo Process for the production of acidic and alkaline solution from salt solution by multi-compartment electrolysis
US4238305A (en) * 1979-10-29 1980-12-09 Allied Chemical Corporation Electrodialytic process for the conversion of impure soda values to sodium hydroxide and carbon dioxide
US4391680A (en) * 1981-12-03 1983-07-05 Allied Corporation Preparing alkali metal hydroxide by water splitting and hydrolysis
EP0141517A1 (en) * 1983-09-23 1985-05-15 Imperial Chemical Industries Plc Preparation of alkali metal silicates
WO1988007975A1 (en) * 1987-04-15 1988-10-20 Schweizerische Aluminium Ag Process for reducing the impurities in lyes in the bayer process

Also Published As

Publication number Publication date
WO1990012637A2 (en) 1990-11-01

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