STUDY ON REMOVAL OF DISSOLVED AND COLLOIDAL SUBSTANCES IN DEINKED PULP BY THE C-CD/HCS/APAM TRIPLE SYSTEM
Simultaneous removal of dissolved and colloidal substances (DCS) has been a challenging task. The cationic-modified ?cyclodextrin (C-CD) nanospheres synthesized in this study, in conjunction with a high substitution cationic starch (HCS) and anionic polyacrylamide (APAM), potentially provide a novel approach to address the problem. The results showed that the DCS control effect of the C-CD/HCS/APAM triple system was better than that of the C-CD/HCS dual system and the single C-CD system in deinked pulp. In the C-CD/HCS/APAM triple system, when the C-CD dosage was 0.9％, HCS was 0.1％ and APAM was 0.05％, the zeta potential of pulp began to increase and the drainage property was improved rapidly, the turbidity of DCS water decreased by 92.2％, and the cationic demand of DCS water decreased by 55.4％. Due to the special internal hydrophobic cavities in the C-CD, the conductivity of DCS water can also be decreased by 10％ in the triple system. The microscope photograph of fibers also confirmed that the polymers in the C-CD/HCS/APAM triple system had a very good synergetic effect on the removal of DCS in deinked pulp.
cationic cyclodextrin dissolved and colloidal substances deinked pulp removal
Chen Qijie Wang Ping Yan Yongxiang Chen Fushan
College of Chemical and Biological Engineering,Changsha University of Science and Technology,Changsh College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao,266042, China
国际会议
广州
英文
945-948
2010-11-08（万方平台首次上网日期，不代表论文的发表时间）