Method of removing selenate ion from selenate ion-containing aqu

Details Method of removing selenate ion from selenate ion-containing aqu Method of removing selenate ion from selenate ion-containing aqu

1997-03-06

1998-03-24

McCarthy, Neil

Liquid purification or separation

Processes

Utilizing electrical or wave energy directly applied to...

210757, 210911, 210750, C02F 148

Patent

active

057308845

ABSTRACT:
Selenate ion is removed from a selenate ion-containing aqueous waste liquid by treating the aqueous liquid with an organic reducing agent in the presence of a photocatalyst while irradiating the aqueous waste liquid with an actinic radiation to convert the selenate ion into elemental selenium which is in the form of solid precipitates and/or hydrogen selenide which is in the form of a gas.

REFERENCES:
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patent: 4892712 (1990-01-01), Robertson et al.
patent: 5118422 (1992-06-01), Cooper et al.
patent: 5174877 (1992-12-01), Cooper et al.
patent: 5332508 (1994-07-01), Foster et al.
patent: 5554300 (1996-09-01), Butters et al.

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