利用孔模型分析膜孔结构  

ANALYSIS OF MEMBRANE STRUCTURE PARAMETERS BY PORE MODEL

作　　者：罗菊芬[1] 莫剑雄[1] 

机构地区：[1]国家海洋局杭州水处理技术研究开发中心,浙江杭州310012

出　　处：《水处理技术》2000年第1期25-29,共5页Technology of Water Treatment

摘　　要：本文基于孔模型 ,从膜对 Na Cl溶液的透过实验中 ,得到 8种膜的结构参数 ,实验结果表明 ,从溶质透过膜的参数与从溶剂透过膜的参数得到的膜结构参数并不一致。根据孔模型由溶质的 Stokes半径 γs得到的膜孔半径 γp 与根据透过溶剂而计算出的膜孔半径 γω 之间存在线性关系 ,对于 CA膜 ,它们的关系式是 :γω=10 .5 0 (γp- 1.739) ,γp 与γω 之间的相关关系是 0 .9986,对于 γp 的标准偏差是 0 .Based on the pore model, structural parameters of the eight kinds of membranes were determined with permeation experiments of aqueous solution of sodium chloride. The parameters determined from P differ from that obtained from L p. There is a good linear correlation between r p which obtained from the solute radius r s and r ω which obtained from the pure water flux. For cellulose acetate membranes, the relation of r p and r ω can be written as r ω =10.50(r p-1.739). The linear correlation coefficient between r p and r ω is 0.9986 and for r p its standard deviation is 0.14.

关 键 词：孔模型 膜 结构参数 CA膜 膜分离 

分 类 号：TQ028.8[化学工程]