Bleaching of Non-wood Soda-AQ Pulps using Enzymes from a Thermophillic Fungus

摘要

An assessment of xylanase treatment prior to bleaching of different non-wood soda-anthraquinone pulps has been done. The xylanase treatment reduced the kappa number and increased viscosity and brightness. The ClO_2 requirement was reduced to about 4-11% with xylanase treatment. Xylanase treated DED and DEDP bleached pulp showed higher brightness as compared to non-treated pulps. The physical properties of treated pulp were always higher.