Arsenic sorbent for remediating arsenic-contaminated material
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United States of America Patent
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Jul 24, 2012
Grant Date -
Jan 19, 2012
app pub date -
Jul 28, 2011
filing date -
Jan 28, 2009
priority date (Note) -
Expired
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Abstract
An arsenic sorbent includes monohydrocalcite that has been precipitated by mixing an aqueous solution of a soluble carbonate or a carbonate with an aqueous solution that includes an Mg2+ ion and a Ca2+ ion in a ratio “Mg/Ca” of 0.3 or more, the monohydrocalcite having a molar ratio “Mg/(Ca+Mg)” of 0.1 or less. The arsenic sorbent exhibits a high arsenic sorption ability, and can stably retain a sorbate. A purification method using the same is also disclosed.
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