环境工程学报2012，Vol.6Issue(5)：1478-1482,5.
基于Donnan分离的磷酸盐离子迁移与膜内分布
Phosphate transport and distribution in membranes based on Donnan dialysis
摘要
Abstract
Transport process of phosphate ions through anion-exchange membranes and its distribution were investigated without supplying electrical potential based on Donnan dialysis principle.Results show that the first transport process of phosphate ions is promoted using pretreated anion-exchange membrane immersing in NaCl solution,and removal efficiency of phosphate increases by 5%.NaCl concentration in receiver solution is leading factor controlling amount of phosphate in an anion-exchange membrane.Increasing NaCl concentration from 0.001 mol/L to 0.1 mol/L,amount of phosphate in the membrane decreases from 0.077 mg/cm2 to 0.002 mg/cm2.Higher NaCl concentration in receiver solution facilitates the third transport process of phosphate ions,and quantity of phosphate distribution in two overlapping membranes presents descending trend from side of feed solution to side of receiver solution.When phase temperature increases,it results in amount of phosphate in membranes increased if NaCl concentration in receiver solution is at low level,but it has little effect on amount of phosphate in membranes if NaCl concentration is at high level.关键词
唐南（Donnan）分离/离子迁移/阴离子交换膜/膜内磷含量Key words
Donnan dialysis/ion transport/anion-exchange membrane/amount of phosphate in membranes分类
资源环境引用本文复制引用
陈世洋,施周,宋勇,谢德华,胡远来..基于Donnan分离的磷酸盐离子迁移与膜内分布[J].环境工程学报,2012,6(5):1478-1482,5.基金项目
国家自然科学基金资助项目 （）
国家“水体污染控制与治理”科技重大专项 （）
