Method for purification of sulfuric acid solution

Details Method for purification of sulfuric acid solution Method for purification of sulfuric acid solution

C - Chemistry, Metallurgy

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B

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C01B 17/90 (2006.01) B01D 15/00 (2006.01) B01J 45/00 (2006.01) C02F 1/28 (2006.01) G05D 3/12 (2006.01)

Patent

CA 1207980

ABSTRACT OF THE DISCLOSURE A method for purification of a sulfuric acid solution such as, for example, a copper electrolyte which entrains at least one metal ion species selected from the group consisting of antimony ions, bismuth ions, and iorn ions and having a sulfuric acid concentration of at least 50 g/liter is disclosed. The method comprises exposing the sulfuric acid solution to a chelating resin possessing aminomethylenephosphonic acid group as a chelate forming group thereby effecting adsorptive separation of the aforementioned at least one metal ion species from the solution. By the method described above, the antimony ions, bismuth ions, and/or iron ions contained as impurities in the copper electro- lyte can be easily and efficiently separated out of the system without entailing any ecological problem.

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