Reduced copper sulphide sorbent for removing heavy metals
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United States of America Patent
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Mar 3, 2015
Grant Date -
Sep 22, 2011
app pub date -
Nov 9, 2009
filing date -
Nov 25, 2008
priority date (Note) -
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Abstract
A sorbent, suitable for removing heavy metals, particularly mercury, from fluid streams containing a reductant such as hydrogen and/or carbon monoxide, is in the form of a shaped unit containing ≦0.1% by weight in total of heavy metal selected from mercury, arsenic, lead, cadmium and antimony, and 4-75% by weight of copper in the form of one or more reduced copper sulphides which have a sulphur to copper atomic ratio of ≦0.6:1.
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