Process for bleaching a pulp in a sequence including an enzyme s

Details Process for bleaching a pulp in a sequence including an enzyme s Process for bleaching a pulp in a sequence including an enzyme s

1994-10-13

1997-07-08

Alvo, Steven

Paper making and fiber liberation

Processes of chemical liberation, recovery or purification...

Gas, vapor or mist contact

162 72, 162 76, 162 78, 162 82, D21C 9147, D21C 916

Patent

active

056456867

ABSTRACT:
Process for bleaching a chemical paper pulp by means of a sequence of treatment stages involving at least one stage with an enzyme and at least one stage with a peroxyacid.

REFERENCES:
patent: 5179021 (1993-01-01), Manoir
patent: 5246543 (1993-09-01), Meier et al.
Abstract Bulletin of the Institute of Paper Science and Technology, vol. 64, No. 2, Aug. 1993, Atlanta, US, p. 224. Ragauskas et al. "Effect of xylanase pretreatment procedures for nonchlorine bleaching".
"Bleaching of eucalyptus kraft pulp with the EnZone process", Yang et al., Tappi Journal, vol. 76, No. 7, Jul. 1993, Atlanta, US, pp. 91-96.
Kirk-Othmer: "Encyclopedia of Chemical Technology", Third Edition, vol. 19, New York, 1982, pp. 415 and 416.
Kappel: "HC-Peroxidbleiche fuer Zellstoff", Wochenblatt fuer Papierfabrikation, 120, May 1992, No. 9, pp. 328-334.
Ullmann's Encyclopedia of Industrial Chemistry, 5th Edition, vol. A18, 1991, pp. 568 and 569.

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