The effects of dissolved and colloidal substances(DCS) in BCTMP and their treatment with pectinase on the efficiency of cationic polyacrylamide(CPAM) and polyethyleneimine(PEI) were studied.The results showed that DCS especially dissolved substances(DS) was deleterious to the efficiency of CPAM,and the retention of fine decreased with the increase of concentration of DCS.PEI with high cationic charge density could neutralize the anionic trash in DCS and improve the efficiency of CPAM.Pectic acid which was b...
【基金】
教育部博士点基金资助项目(编号20040561003)
【更新日期】
2006-09-11
【分类号】
TS743.9
【正文快照】
在机械浆制浆漂白过程中,木材中的亲脂性树脂分散到水中形成胶体,它们与可溶性的半纤维素、低分子质量的木素、立格南和果胶类物质以及从原料和生产用水中引入的无机电解质等一起被称为溶解物质和胶体物质(Dissolved and Colloidal Substance,DCS)[1-2],其产生量为30~70 kg/t浆