[1]张显球,张林生,吕锡武,等.一种求得纳滤膜荷电密度的快速方法[J].东南大学学报(自然科学版),2008,38(6):1034-1037.[doi:10.3969/j.issn.1001-0505.2008.06.019]
 Zhang Xianqiu,Zhang Linsheng,Lü Xiwu,et al.Method for obtaining the charge density of nanofiltration membrane[J].Journal of Southeast University (Natural Science Edition),2008,38(6):1034-1037.[doi:10.3969/j.issn.1001-0505.2008.06.019]
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一种求得纳滤膜荷电密度的快速方法()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
38
期数:
2008年第6期
页码:
1034-1037
栏目:
化学化工
出版日期:
2008-11-20

文章信息/Info

Title:
Method for obtaining the charge density of nanofiltration membrane
作者:
张显球12 张林生1 吕锡武1 杜明霞2
1 东南大学能源与环境学院, 南京 210096; 2 南京师范大学动力工程学院, 南京 210042
Author(s):
Zhang Xianqiu12 Zhang Linsheng1 Lü Xiwu1 Du Mingxia2
1 School of Energy and Environment, Southeast University, Nanjing 210096,China
2 School of Power Engineering, Nanjing Normal Universty, Nanjing 210042, China
关键词:
纳滤膜 荷电密度 模型
Keywords:
nanofiltration membrane charge density model
分类号:
TQ028.8
DOI:
10.3969/j.issn.1001-0505.2008.06.019
摘要:
基于荷电纳滤膜中同离子浓度显著低于反离子浓度的特点,将Donnan-Steric Pore Model(DSPM)模型中的荷电密度近似表达为膜中反离子浓度与其化合价乘积,进而将其用于DSPM模型的简化, 并通过与Spiegler-Kedem方程关联建立了纳滤膜荷电密度的计算方程.采用荷负电的NF270纳滤膜,实验研究了膜对NaCl溶液的截留特性,利用建立的荷电密度计算方程求得了NF270膜在NaCl浓度分别为2,8,21,50 mol/m3时的荷电密度,并建立了该膜荷电密度与NaCl浓度间的关系式.将求得的荷电密度应用于DSPM模型, 理论计算了膜对NaCl的截留性能,计算结果与实验结果相一致,表明所建立的荷电密度计算方程可作为一种求取纳滤膜荷电密度的快速方法.
Abstract:
Based on the characteristics that the concentration of co-ions is less than that of counter-ions in charged membrane, charge density value in the Donnan-steric pore model model(DSPM)can be expressed as the product of counter-ions concentration and ionic valence, then DSPM is simplified. Combining with the Spiegler-Kedem model, an equation for calculating the charge density of nanofiltration membrane has been established. Permeation experiments of aqueous solution of single electrolyte solute(NaCl)with negatively charged membrane(NF270)were conducted, and charge densities of NF270 membrane were obtained from the equation established when NaCl concentrations were 2,8,21,50 mol/m3. The relation between the charge densities and NaCl concentration was established and then was applied in DSPM for the calculation retention of NaCl. The calculation results are in agreement with experimental results, which shows that the equation established can be used as a rapid method for obtaining the charge density of nanofiltration membrane.

参考文献/References:

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相似文献/References:

[1]张显球,张林生,吕锡武,等.一种求得纳滤膜截留分子量的方法[J].东南大学学报(自然科学版),2007,37(5):883.[doi:10.3969/j.issn.1001-0505.2007.05.029]
 Zhang Xianqiu,Zhang Linsheng,Lü Xiwu,et al.Method for obtaining molecular weight cut-off of nanofiltration membrane[J].Journal of Southeast University (Natural Science Edition),2007,37(6):883.[doi:10.3969/j.issn.1001-0505.2007.05.029]

备注/Memo

备注/Memo:
作者简介: 张显球(1971—),男,博士,副教授; 张林生(联系人),男,教授,博士生导师,zhanglinsheng@seu.edu.cn.
基金项目: 江苏省高新技术产业化基金资助项目(BG2001028)、江苏省高等学校自然科学基金资助项目(04KJD610109).
引文格式: 张显球,张林生,吕锡武,等.一种求得纳滤膜荷电密度的快速方法[J].东南大学学报:自然科学版,2008,38(6):1034-1037.
更新日期/Last Update: 2008-11-20