Bio-modification of eucalyptus chemithermomechanical pulp  

作　　者：Qifeng YANG Huaiyu ZHAN Shuangfei WANG Kecheng LI Shiyu FU 

机构地区：[1]State Key Laboratory of Pulp&Paper Engineering,South China University of Technology,Guangzhou 510640,China [2]Pulp&Paper Institute of Guangxi University,Nanning 530004,China [3]Department of Chemical Engineering and Limerick Pulp and Paper Centre,University of New Brunswick,Frecdericton NB,Canada

出　　处：《Frontiers of Chemical Science and Engineering》2008年第1期28-33,共6页化学科学与工程前沿（英文版）

基　　金：This work was supported by the National Basic Research Program of China(No 2006 CB 708614).

摘　　要：Eucalyptus chemithermomechanical pulp(CTMP)was modified with the white-rot fungus 19-6 in a stationary culture condition.Different factors that influence the effect of white-rot fungus treatment,including additional nutrition,pH value,temperature,treatment time and oxygen input were investigated.The results show that the energy consumption of post refining of CTMP treated by white-rot fungus 19-6 was lower than that of untreated pulp and the strength properties also obviously improved.At a freeness level of about 330 mL,compared to the untreated pulp,the tensile index,tear index and internal bonding strength increased by 21.3%,27.4% and 33.1%,respectively.Unfortunately,the treatment with white-rot fungus substantially decreased all optical properties except for opacity,which was essentially unchanged.Brightness and light scatter-ing coefficient were reduced to as much as 25%and 21%compared to the untreated pulps.However,after a tow-stage“Na_(2)S_(2)O_(4)-H_(2)O_(2)”bleaching,the final brightness can reach 70.3%ISO,which is similar to that of the untreated CTMP.

关 键 词：eucalyptus CTMP white-rotfungus19-6 bio-modification 

分 类 号：TS7[轻工技术与工程—制浆造纸工程]