文献类型：期刊文献

中文题名：纳滤对壳寡糖制备液的纯化性能研究

英文题名：Research on desalination and purification characteristics of chitobiose solution with nano-filtration membrane

作者：韩永萍[1,2];林强[2];何绪文[1]

第一作者：韩永萍

机构：[1]中国矿业大学(北京校区);[2]北京联合大学生物化学工程学院

第一机构：中国矿业大学(北京校区),北京100083

年份：2009

卷号：29

期号：6

起止页码：105-109

中文期刊名：膜科学与技术

外文期刊名：Membrane Science and Technology

收录：CSTPCD;;北大核心:【北大核心2008】；CSCD:【CSCD2011_2012】；

基金：北京市教委科技转化项目(KM200511417005)

语种：中文

中文关键词：纳滤膜;脱盐;纯化;壳寡糖

外文关键词：nano-filtration membrane; desalination; purification; chitobiose

摘要：对壳寡糖制备液进行了NF-40纳滤膜脱盐纯化试验研究和理论分析.结果表明,纳滤膜对溶质的分离效果主要由空间位阻和静电效应决定,同号离子在纳滤过程中存在膜竞争透过;在酸性条件下纳滤膜对壳寡糖制备液中阳离子的截留次序依次为壳寡糖>二糖和单糖>Na+>H+;在碱性下阳离子竞争趋势因膜污染严重而不再明显.此外,操作压差过大不仅分离效率下降而且膜污染加剧.温度升高有利于脱盐而不利于纯化.
In this paper, the theoretic analysis and experimental research were made for the desalination and purification characteristics of NF - 40 nano - filtration （NF） membrane to chitobiose solution. The results show that the steric and electrostatic effects are dominant for the ion retenction in nano - filtration membrane and there is competitionpenetration among uniform charger electrolyte in the course of nano- filtration. Under the acid condition the order of nano- filtration membrane retenction to cation in chitobiose solution is chitobiose 〉 monosaccharide or disaccharide 〉Na^＋ 〉H^＋ . Moreover, the over high pressure not only reduce operation efficiency, but also cause the membrane fouling serious. The high temperature is favorable to desalination and unfavorable to purification.