Electrochemical Recovery of Arsenic
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United States of America Patent
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Issued Date -
Jun 25, 2009
app pub date -
Aug 10, 2006
filing date -
Aug 24, 2005
priority date (Note) -
Abandoned
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Abstract
Contemplated devices and methods for arsenic recovery employ a two-step process in which an arsenite and arsenate-containing solution is first subjected to a non-electrochemical reduction that reduces arsenate and arsenite. The arsenate-depleted arsenite-containing solution is the subjected to electrochemical reduction at alkaline pH using a cathode with a high-surface carbon portion. Most preferably, the treated solution is then used as eluent for an adsorbent that removed arsenate and arsenite from a water supply.
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