Liquid purification or separation – Processes – Ion exchange or selective sorption
Patent
1995-11-06
1998-07-21
Cintins, Ivars
Liquid purification or separation
Processes
Ion exchange or selective sorption
210682, 210683, 210691, 210747, C02F 128
Patent
active
057830886
ABSTRACT:
The present invention is a method for removing oxidized contaminant(s) from water. More specifically, the invention has the steps of contacting water containing the oxidized contaminant(s) with a layered aluminosilicate having Fe(II). The aluminosilicate may contain naturally occurring Fe(II), or the Fe(II) may be produced by reducing Fe(III) that is initially present. Reduction may be either by exposure to a chemical or biological reductant. Contacting the water containing oxidized contaminant(s) may be by (1) injection of Fe(II)-containing layered aluminosilicate, via a well, into a saturated zone where it is likely to intercept the contaminated water; (2) injection of contaminated water into a vessel containing the Fe(II)-bearing layered aluminosilicate; and (3) first reducing Fe(III) in the layered aluminosilicate to Fe(II) by injection of a biological or chemical reductant, into an aquifer or vessel having sufficient Fe(III)-bearing aluminosilicate to produce the necessary Fe(II).
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Amonette James E.
Cantrell Kirk J.
Cole Charles R.
Fruchter Jonathan S.
Gorby Yuri A.
Battelle (Memorial Institute)
Cintins Ivars
Zimmerman Paul W.
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