Purification of effluent from wood pulp bleach plant

Details Purification of effluent from wood pulp bleach plant Purification of effluent from wood pulp bleach plant

1989-05-15

1990-01-23

Cintins, Ivars

Liquid purification or separation

Processes

Ion exchange or selective sorption

210917, 210928, B01D 1500

Patent

active

048956627

ABSTRACT:
A process for purifying a waste effluent from the bleaching of wood pulp by contacting the effluent with an adsorbent resin, wherein the adsorbent resin is a macroporous copolymer being post-crosslinked in a swollen state in the presence of a Friedel-Crafts catalyst and functionalized with hydrophilic groups prior to contact with the waste effluent.

REFERENCES:
patent: 3652407 (1972-03-01), Paleos
patent: 3990969 (1976-11-01), Broddevall
patent: 4191813 (1980-03-01), Reed et al.
patent: 4263407 (1981-04-01), Reed, Jr.
patent: 4321331 (1982-03-01), Widiger et al.
patent: 4382124 (1983-03-01), Meitzner et al.
R. e. Anderson, "Purification of Kraft Pulp Bleach Plant Effluents Using Condensate Resins", Reactive Polymers, 1 (1982) 67-71.
Research and Development Division Conference, 1982, Tappi Press, Kringstad et al. pp. 191-200.

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