Liquid purification or separation – Processes – Making an insoluble substance or accreting suspended...
Reexamination Certificate
2006-11-21
2006-11-21
Hruskoci, Peter A. (Department: 1724)
Liquid purification or separation
Processes
Making an insoluble substance or accreting suspended...
C210S724000, C210S726000, C210S911000, C210S913000, C210S915000
Reexamination Certificate
active
07138063
ABSTRACT:
An improved water decontamination process comprising contacting water containing anionic contaminants with an enhanced coagulant to form an enhanced floc, which more efficiently binds anionic species (e.g., arsenate, arsenite, chromate, fluoride, selenate, and borate, and combinations thereof) predominantly through the formation of surface complexes. The enhanced coagulant comprises a trivalent metal cation coagulant (e.g., ferric chloride or aluminum sulfate) mixed with a divalent metal cation modifier (e.g., copper sulfate or zinc sulfate).
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Brady Patrick V.
Khandaker Nadim R.
Krumhansl James L.
Teter David M.
Hruskoci Peter A.
Sandia Corporation
Watson Robert D.
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