漂白硫酸盐思茅松浆酶促打浆的研究  

Effect of Enzymatic Treatment on Beating Performance of Simao Pine Bleached Kraft Pulp

作　　者：张正健[1] 胡惠仁[1] 徐建峰[1] 赵晶[1] 

机构地区：[1]天津市制浆造纸重点实验室,天津科技大学材料科学与化学工程学院,天津300457

出　　处：《中国造纸学报》2009年第1期35-41,共7页Transactions of China Pulp and Paper

基　　金：国家自然科学基金(项目编号30771694);天津市科技发展计划项目(06TXTJJC14302)资助课题

摘　　要：采用酸性、中性及碱性纤维素酶对漂白硫酸盐思茅松浆的酶促打浆进行研究,探讨了各种酶在不同反应体系下对漂白硫酸盐思茅松浆打浆性能和物理性能的影响。结果表明,碱性纤维素酶预处理对纸浆的打浆度提高不明显,因此该酶不适合用于酶促打浆;用适量酸性和中性纤维素酶预处理后,纸浆物理性能有所降低,但打浆度得到明显提高,可降低打浆能耗,因此酸性和中性纤维素酶适用于酶促打浆。最后选择酸性和中性纤维素酶作为研究对象,考察了温度和pH值对酶促打浆的影响。结果表明,中性和酸性纤维素酶处理的最佳温度均为45-50℃、最佳pH值范围分别为4.8-5.8和2.8-5.8。In this paper,the effects of enzymatic treatment with acidic cellulase,neutral cellulase and alkaline cellulase on beating performance of Simao pine bleached kraft pulp were studied.The effects of those cellulases on beating performance and physical properties of Simao pine bleached kraft pulp in different conditions were discussed.At first,the effects of temperature and pH value on the activities of those three kinds of cellulases were investigated,and the enzymatic activities were measured.Then,the effects of dosage of the three cellulases on enzymatic beating of the pulp were discussed.The results showed that alkaline cellulase didn＇t help much for pulp beating,and had somewhat adverse effect on pulp physical properties;acidic cellulase and neutral cellulase could improve pulp beating performance dramatically and the physical properties were slightly decreased.So that acidic cellulase and neutral cellulase were suitable for enzymatic beating of bleached softwood kraft pulp,and could reduce energy consumption of beating process.At last,the conditions of enzymatic treatment（temperature and pH value） of acidic cellulase and neutral cellulase in enzymatic beating were investigated.The optimized conditions were as follows： temperature 45-50℃,pH value 4.8-5.8 for the neutral cellulase and temperature 45-50℃,pH value 2.8-5.8 for the acidic cellulase.

关 键 词：酶促打浆 酶活 纤维素酶 打浆度 纸浆物理性能 

分 类 号：TS743.4[轻工技术与工程—制浆造纸工程]