果胶酶处理对杨木CTMP浆中溶解与胶体物质的影响  

Effect of Pectinase Treatment of Aspen CTMP on the Dissolved and Colloidal Substances

作　　者：周志伟[1] 苗庆显[1] 黄六莲[1] 罗小林[1] 吴慧[1] 张敏[1] 胡会超[1] 陈礼辉[1] 

机构地区：[1]福建农林大学材料工程学院,福建福州350002

出　　处：《纸和造纸》2015年第2期37-40,共4页Paper and Paper Making

基　　金：福建省高校产学合作科技重大项目"高速纸机上化学热磨机械浆配抄壁纸原纸的研发"(2012H6004);国家自然科学青年基金"杨木BCTMP制浆过程中溶解与胶体物质的产生机制及控制研究"(31100444);福建省发改委新兴产业技术开发项目"环保型多功能室内墙体装饰新材料的研发"

摘　　要：首先对果胶酶处理工艺进行了优化,然后探讨了优化工艺条件下酶处理对未经洗涤和经过洗涤的CTMP浆中残留DCS的影响,及酶处理对以上两种不同处理方式所得CTMP浆后续漂白过程中溶出DCS的影响。结果表明:果胶酶的优化处理工艺为pH值4.0、50℃、酶用量120 U·g^(-1)(对绝干浆)、反应时间150min;经过酶处理后,未洗涤和洗涤后CTMP浆中残留DCS的阳离子需求量分别下降了26.70%和11.60%;同时,酶处理还能有效地减少其后续漂白过程中DCS的溶出。In this paper, the technological conditions of pectinase treatment were studied. The role of pectinase treatment of the unwashed and washed CTMP and the dissolution of DCS in the bleaching process after the pectinase treatment were discussed, The results showed that the optimum process conditions were pH value of 4.0, treating temperature of 50℃, the dosage of pectinase of 120 U g-1 pulp and reaction time of 150 min. After the pectinase treatment, the cationic demand of unwashed and washed CTMP were decreased 26.70% and 11.60%, respectively. Meanwhile the pectinase treatment can effectively inhibit the dissolution of DCS in the subsequent bleaching process.

关 键 词：化学热磨机械浆 溶解与胶体物质 果胶酶 阳离子需求量 

分 类 号：TS713[轻工技术与工程—制浆造纸工程]