Process for producing wood adsorbents for mercury ions by graft polymerization of acrolein onto xanthated wood meal followed by conversion to thiosemicarbazone
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United States of America Patent
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-
Mar 24, 1981
Grant Date -
N/A
app pub date -
Mar 2, 1979
filing date -
Nov 18, 1976
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A novel wood adsorbent for mercury ions is provided by the process of this invention. The process comprises xanthating an alkali wood meal, impregnating the xanthated wood meal with a solution of a peroxide, graft copolymerizing the product with acrolein in gas phase, and converting acrolein aldehyde groups on the resulting graft copolymer to thiosemicarbazone to obtain the novel wood adsorbent for mercury ion. The novel wood adsorbent has a great adsorbing capacity for mercury ion.
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