EFFECT OF CELLULASE AND PECTINASE ON REFINING ENERGY AND PROPERTIES OF PINUS MASSONIANA MECHANICAL PULP
Mechanical pulp is a kind of high yield pulping that comes with the comprehensive utilization of wood. Mechanical pulp has lots of benefits, such as simple process and low pollution. However, the disadvantages of mechanical pulp including higher refining energy, lower paper physical strength and poor brightness. The effect of cellulase and pectinase pretreatment on achieving energy saving and improvement in properties of pinus masoniana mechanical pulp were investigated. The influences of factors such as enzyme pretreatment temperature, pH value, enzyme dosage and enzyme pretreatment time on refining energy and pulp strength, brightness and opacity were analyzed in this paper. Results showed that the optimum conditions of pretreatment was pH value 5.5, temperature 50℃, reaction time 150min, cellulase charge 0.75% and pectinase charge 0.15%. Refining energy consumption of the pretreated pulp was lower than the unpretreated pulp.
cellulase pectinase pretreatment refining energy properties
Qing Luo Xin-ping Li Ye Liu Jun-hua Liu
College of Papermaking Engineering,Shaanxi University of Science & Technology Xian, 710021, China
国际会议
International Mechanical Pulping Conference 2011(2011国际机械浆学术会议)
西安
英文
231-235
2011-06-26(万方平台首次上网日期,不代表论文的发表时间)