摘要
研究了在精磨前用纤维素酶预处理杨木一段盘磨化学机械浆对降低磨浆能耗的影响,探讨了该酶的酶学性质以及在不同反应体系下对能耗、纸浆物理性能和纤维形态的影响。结果表明,纤维素酶在pH值4.8和温度50℃条件下,各组分酶活较高;当纤维素酶在用量0.5 IU/g、温度50℃、pH值5、处理时间为1 h的条件下,酶处理效果较好,可以有效降低磨浆能耗。但是由于纤维长度下降,纸浆的物理强度性能都有不同程度的降低。
The effect of cellulase treatment of the pulp from the first stage refiner on the reduction of energy consumption of poplar chemi-mechamical pulp production was studied.The effects of temperature and pH value on enzyme activities of cellulase were investigated,and the effects of cellulase on the refining performances,physical properties and fiber morphology of the pulp in different reaction conditions were discussed.The results showed that the cellulose has good activity in the condition of 50℃ and pH value 4.8,and the cellulase can effectively improve the refining efficiency in the conditions of 0.5 IU/g,50℃,pH value 5 and 1 hour.However,the result showed that enzymatic treatment has negative effect on the pulp strength properties and the fiber length.
出处
《中国造纸学报》
CAS
CSCD
北大核心
2009年第1期20-24,共5页
Transactions of China Pulp and Paper
基金
丹麦Novozymes公司
国家科技支撑项目“速生材高得率浆抄造性能的研究”(2006BAD32B05)资助
关键词
纤维素酶
酶处理
磨浆
物理性能
纤维形态
cellulose
enzymatic treatment
refining
physical properties
fiber morphology
