Sulfur-impregnated organoclay mercury and/or arsenic ion removal media
AssigneeAMCOL International Corporation
InventorsZhen Wang, Robert Abraham
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Abstract
The use of a sulfur-impregnated organoclay provides a mercury or arsenic removal media having increased reactivity, stability, and mercury removal ability. The Hg/As removal media described herein is prepared by impregnating an organophilic clay with elemental (free state) sulfur. Alternatively, the clay can be made organophilic by onium ion reaction prior to or simultaneously with impregnating the organoclay with sulfur.
Claims24
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 an organoclay and elemental sulfur in its free state.
A contaminant removal media for removing mercury or arsenic from water or for removal of mercury from a gas, by contact, comprising:
- an intimate mixture of a layered phyllosilicate intercalated with a surface-modifying, layer-expanding intercalant and elemental sulfur in its free state.
Dependencies are inferred from the claim text.