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US 7,404,901 B2Granted
Method for the removal of arsenic ions from water
AssigneeBoard of Trustees of Michigan State University
InventorsThomas J. Pinnavaia, Joel I. Dulebohn, Emily J. McKimmy
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Abstract
A method for the removal of arsenic ions from water with a porous silica composition with an organofunctional moiety comprising a thio which binds the arsenic ion and is then removed from the water. The method comprises the quality of the water.
Claims6
A method for removal of an arsenic ion from an aqueous solution comprising:
- (a) providing a porous silica composition with an organofunctional moiety comprising thiol groups which binds the arsenic ion in the aqueous solution containing the arsenic ion, wherein the organofunctional moiety further comprises protonated amino or quaternary amino groups;
- and
- (b) separating the porous silica composition containing the bound arsenic ion from the aqueous solution.
Dependencies are inferred from the claim text.