Process for producing wood adsorbents for mercury ions by graft

Details Process for producing wood adsorbents for mercury ions by graft Process for producing wood adsorbents for mercury ions by graft

1979-03-02

1981-03-24

Schofer, Joseph L.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

521 30, 521 33, 260 174GC, C02F 162, C08B 1302, C08F25102, B01J 3922

Patent

active

042581362

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.

REFERENCES:
patent: 3357933 (1967-12-01), Zaessinger et al.
patent: 4003701 (1979-01-01), Brickman
"Recent Aspects of Grafting on Cellulose" Mark & Atlas pp. 342-345, Cellulose 3-(1969) Sep. 18, 1968, Chemistry a Technology.

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