Removal of iron from chelant solutions

Details Removal of iron from chelant solutions Removal of iron from chelant solutions

C - Chemistry, Metallurgy

02

F

362/59

C02F 1/64 (2006.01)

Patent

CA 1195443

ABSTRACT OF THE DISCLOSURE A process is described for removing dissolved iron from an aqueous liquid containing iron in the form of a soluble complex with alkylenepolyamine poly- acetic acids or salts thereof. The process comprises the steps of (a) adjusting the pH of said aqueous liquid to at least about 12.5, (b) adding sufficient quantities of a soluble calcium salt to facilitate the growth of insoluble iron hydroxide particles, and (c) separating the resulting insoluble mass containing iron hydroxide from the liquid effluent.

415046

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