Method for purification of sulfuric acid solution

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

1984-03-05

1985-12-17

Straub, Gary P.

Chemistry of inorganic compounds

Sulfur or compound thereof

Oxygen containing

123 87, 123139, 123 24, 204DIG13, 210688, C01B 1790, C01B 2800, B01D 1500, C02B 144

Patent

active

045592160

ABSTRACT:
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 iron 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 electrolyte can be easily and efficiently separated out of the system without entailing any ecological problem.

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Waitz, Jr. Ion Exchange for Recovery of Precious Metals, Plating and Surface Finishing, Apr. 1982, pp. 56-59.

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