Method of removing arsenic species from an aqueous medium using

Details Method of removing arsenic species from an aqueous medium using Method of removing arsenic species from an aqueous medium using

1998-01-30

2000-03-28

Cintins, Ivars

Liquid purification or separation

Processes

Ion exchange or selective sorption

210683, 210911, B01D 1500, C02F 128

Patent

active

060427310

ABSTRACT:
A method for removing arsenic species from an aqueous medium with modified zeolite minerals comprising providing an aqueous medium containing arsenic species in the form of both arsenate and arsenite, contacting the aqueous medium with an iron (II) laden zeolite mineral so that arsenic in the form of at least one of arsenate and arsenite contained in the aqueous medium can be adsorbed onto the iron (II) laden zeolite mineral forming an arsenic adsorbed iron (II) laden zeolite mineral, and separating the arsenic adsorbed iron (II) laden zeolite mineral from the aqueous medium.

REFERENCES:
patent: 5547585 (1996-08-01), Shepherd et al.
patent: 5591346 (1997-01-01), Etzel et al.
patent: 5622632 (1997-04-01), Gallup

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