EXPERIMENTAL RESEARCH ON BIOLOGICAL PULPING OF THE BROUSSONETIA PAPYRIFERA WHITE BARK

摘要

Mainly by anaerobic bacilli, the Broussonetia Papyrifera white bark is used for biological pulping, then pulping is chemically bleached. By the analysis of pulping 's chemical element in the different processing condition and the comparision with two kind of chemical pulping, the results indicates that the Broussonetia Papyrifera white bark directly used for biological pulping is better than that preheated before biological pulping. Biological pulp treated at 35℃ for 6 days or 7 days is better than that treated at 25℃ for 13 days. Compared with ammonia-base sulfite pulping and alkali peroxide oxalate pulping, biological pulping of Broussonetia Papyrifera white bark has higher yield of pulp, whiter pulp, low chemical consumption and energy consumption.