COMBINING PECTINASE AND CHEMICAL ADDITIVES TO CONTROL DISSOLVED AND COLLOIDAL SUBSTANCES IN HYP
The components of dissolved and colloidal substances (DCS) from high yield pulps (HYP) were analyzed first, and the relationships between DCS accumulation and physical properties of HYP were further investigated in this study. Four different kinds of additives were used alone or multi-kind together to treat HYP and the cationic demand (CD) of white water was evaluated. Results showed that when the dosage is 1U/g ODP (oven dry pulp), the effectiveness of pectinase is the best and the CD reduces by 26.45％. Based on the talc/CPAM/HCS temary orthogonal experiments, one can find that the maximum decrement of CD can be obtained when the talc, HCS (high cationic starch) and CPAM (cationic polyacrylamide) dosage is 5％, 0.5％ and 0.01％(on oven dry pulp weight) respectively. Further, the CD of the BCTMP can decrease by 47.91％ if pectinase is used with chemical additives.
DCS pectinase galacturonic acid BCTMP cationic demand
Yang Sha Hu Huiren Liu Jun
Tianjin Key Laboratory of Pulp and Paper, Tianjin University of Science & Technology, Tianjin, 300457,China
国际会议
广州
英文
933-936
2010-11-08（万方平台首次上网日期，不代表论文的发表时间）