Coupling agent-reacted mercury removal media
AssigneeAMCOL International Corporation
InventorsZhen Wang, Robert Abraham
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Abstract
The use of a coupling agent containing a mercapto, disulfide, tretrasulfide and/or polysulfide end group provides a mercury removal media having increased reactivity, stability, and mercury removal ability. The mercury removal media described herein is prepared by reacting an organophilic clay containing onium ions with a mercapto, disulfide, tetrasulfide, and/or polysulfide end moiety. Alternatively, the clay can be made organophilic by onium ion reaction prior to or simultaneously with the coupling reaction of the mercapto- or sulfide-end group-containing coupling agent.
Claims21
A contaminant removal media for removing mercury and/or arsenic from water or removing mercury from a gas by contact, comprising:
- an intimate mixture of a coupling agent-reacted layered phyllosilicate, wherein the coupling agent includes a mercapto or sulfide moiety.
A contaminant removal media for removing mercury and/or arsenic from water or removing mercury from a gas, by contact, comprising:
- a mixture of a layered phyllosilicate intercalated with an intercalant surface modification agent;
- and a coupling agent containing a mercapto or sulfide moiety intimately mixed for reaction of the coupling agent with the layered phyllosilicate.
Dependencies are inferred from the claim text.