Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
John Leslie Burba, III0
Richard Donald Witham0
Edward Bayer McNew0
Date of Patent
November 27, 2007
0Patent Application Number
114356970
Date Filed
May 16, 2006
0Patent Primary Examiner
Patent abstract
Arsenic is removed from water and other aqueous feeds by (1) treating the feed with a compound containing cerium in the +4 oxidation state, preferably cerium dioxide, to oxidize arsenic in the +3 oxidation state to arsenic in the +5 oxidation state and (2) removing the arsenic in the +5 oxidation state from the aqueous phase, normally by contacting the treated feed with alumina or other precipitating agent containing cations in the +3 oxidation state.
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