绿色糖单孢菌胞外酶漂白桉木硫酸盐浆的研究  

Study on Eucalyptus Kraft Pulp Biobleaching by Saccharomonospora Viridis Exocellular Enzyme

作　　者：翟楠[1] 吴玉英[1] 谢响明[2] 丁梦璇[2] 

机构地区：[1]北京林业大学材料科学与技术学院,北京100083 [2]北京林业大学生物科学与技术学院,北京100083

出　　处：《造纸科学与技术》2010年第5期51-54,共4页Paper Science & Technology

基　　金：国家自然科学基金(30870028)资助项目

摘　　要：用绿色糖单孢菌分泌的含有木素过氧化物酶与木聚糖酶复合胞外酶漂白桉木KP浆,对其进行单段酶处理及后续化学漂白,探讨生物酶预处理对纸浆可漂性以及漂白废水污染负荷的影响。结果表明:酶处理可改善桉木KP浆的可漂性,在后续漂白条件相同情况下,酶处理可使桉木KP浆白度增加6.3%ISO;在达到相近白度时,后续DED漂白的总用氯量可减少30%,漂白废水的悬浮物、色度和CODC r分别降低了22.7%、28.1%和26.2%。Xylanase and lignin peroxidase exocellular enzyme produced by Saccharomonospora viridis were used for the single-stage enzyme pretreatment of eucalyptus kraft pulp,followed by subsequent chemical bleaching（DED）.The effect of compound enzyme on the bleachability and effluent pollution load showed that enzyme pretreatment could improve the bleachability of eucalyptus kraft pulp.Meanwhile,at the same condition of subsequent chemical bleaching,the brightness of samples with enzyme pretreatment increased by 6.3%ISO.At the similar brightness,the total dosage of ClO2 in DED bleaching could be reduced by nearly 30%.The contents of SS,CU and CODCr could be decreased by 22.7%、28.1% and 26.2% respectively.

关 键 词：绿色糖单孢菌胞外酶 生物漂白 桉木KP浆 

分 类 号：TS749.1[轻工技术与工程—制浆造纸工程] Q55[生物学—生物化学]