STUDY ON THE BIOBLEACHING OF TRIPLOIDCLONE OF POPULUS TOMENTOSA CARR. KRAFT PULP

摘要

This paper mainly discussed the xylanase and laccase/mediator system treated the Kraft pulp(KP) of Triploid Clone Populus tomentosa Carr.. Results showed that xylanase treatment could improve the bleach ability and increase the delignification of the following bleaching, while laccase/mediator system exhibited excellent delignification selectivity, as a result, higher level of delignification was obtained. After the bleaching process of O-En-D_1ED_2, the brightness can be reached to 85.7%ISO, and to the process of O-L-D_1ED_2, the brightness was 85.4%ISO.