Patents Represented by Attorney, Agent or Law Firm Jeff Myers
  • Arsenic removal in conjunction with lime softening
    Patent number: 6802980
    Abstract: A method for removing dissolved arsenic from an aqueous medium comprising adding lime to the aqueous medium, and adding one or more sources of divalent metal ions other than calcium and magnesium to the aqueous medium, whereby dissolved arsenic in the aqueous medium is reduced to a lower level than possible if only the step of adding lime were performed. Also a composition of matter for removing dissolved arsenic from an aqueous medium comprising lime and one or more sources of divalent copper and/or zinc metal ions.
    Type: Grant
    Filed: August 30, 2002
    Date of Patent: October 12, 2004
    Assignee: Sandia Corporation
    Inventors: Nadim R. Khandaker, Patrick V. Brady, David M. Teter, James L. Krumhansl