Removal of iron from chelant solutions

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

1985-07-18

1986-12-16

Hruskoci, Peter

Liquid purification or separation

Processes

Ion exchange or selective sorption

210694, 210725, 210727, 210912, 423 34, 423140, C02F 154

Patent

active

046295704

ABSTRACT:
A process is described for removing dissolved iron from an aqueous liquid containing iron in the form of a soluble complex with alkylenepolyamine polyacetic 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.

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