TRANSFER OF H2SO4, NA2SO4 AND ZNSO4 BY DIALYSIS THROUGH AN ANION-EXCHANGE MEMBRANE

被引：23
|
作者：
ELMIDAOUI, A
CHERIF, AT
MOLENAT, J
GAVACH, C
机构：
[1] UNIV MONTPELLIER 2,CNRS,MAT & PROC MEMBRANAIRES LAB,F-34033 MONTPELLIER,FRANCE
[2] UNIV KENITRA,DEPT CHEM,KENITRA,MOROCCO
[3] UNIV SCI & TECHNOL HOUARI BOUMEDIENNE,INST CHEM,ALGIERS,ALGERIA
来源：
DESALINATION | 1995年 / 101卷 / 01期
关键词：
DIALYSIS; ANION EXCHANGE MEMBRANE; SULFURIC ACID; SODIUM AND ZINC SULFATES; NERNST-PLANCK EQUATION;
D O I：
10.1016/0011-9164(95)00006-N
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
Competitive diffusion between H2SO4 and its salts (Na2SO4 and ZnSO4 was performed using a Neosepta AFN anion exchange membrane. The stronger affinity of sulfuric acid and the higher mobility of protons in the membrane with respect to sodium and zinc cations explain the great difference in the diffusivity between acid and salts through this membrane. Coexisting sodium and zinc sulfates have no significant effect on H2SO4 diffusion flux, ion content and electrical resistance. The results are analyzed with acid sulfuric solutions on the basis of the Nernst-Planck equation and Goldman hypothesis. Calculated values are compared with experimental values. This work shows that diffusion dialysis allows one to recover sulfuric acid from effluents containing sodium and zinc ions.
引用
收藏
页码：39 / 46
页数：8
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