Chemically-impregnated silicate agents for mercury control

Details Chemically-impregnated silicate agents for mercury control Chemically-impregnated silicate agents for mercury control

2006-05-23

2006-05-23

Spitzer, Robert H. (Department: 1724)

Gas separation: processes

Solid sorption

Inorganic gas or liquid particle sorbed

C095S900000, C096S108000, C210S688000, C423S210000

Reexamination Certificate

active

07048781

ABSTRACT:
The present invention is directed to a contaminant removal agent comprising a polyvalent metal sulfide on the surface of an inert substrate. The substrate can be a layered silicate, such as vermiculite, an aluminosilicate such as montmorillonite, or a nonlayered silicate such as a zeolite. The agent removes mercury from process streams. The ion exchange to deposit the polyvalent metal on the substrate is preferably performed at a pH above the pHZPC.

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