A comparison of membrane charge of a low nanofiltration ceramic membrane determined from ionic retention and tangential streaming potential measurements

被引：23
|
作者：
Labbez, C
Fievet, R
Szymczyk, A
Thomas, F
Simon, C
Vidonne, A
Pagetti, J
Foissy, A
机构：
[1] Lab Chim Mat & Interfaces, F-25030 Besancon, France
[2] INPL, UMR 7569 CNRS, Lab Environm & Mineral, F-5401 Vandoeuvre Les Nancy, France
[3] SINTEF Mat Technol, Oslo, Norway
来源：
DESALINATION | 2002年 / 147卷 / 1-3期
关键词：
ceramic membrane; retention; tangential streaming potential; effective volume charge;
D O I：
10.1016/S0011-9164(02)00539-8
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
The retention of neutral solutes and ionic solutions on a NF ceramic membrane was measured. The Donnan Steric Pore Model (DSPM) was fitted to these observations yielding effective pore radius (r(p)) and thickness/porosity ratio (Deltax/A(k)) from neutral solutes data and the effective volume charge (X) from electrolyte data. Effective volume charges were also directly determined using tangential streaming potential measurements. The DSPM gives X in good agreement with the values obtained by streaming potential. However, it overestimates Deltax/A(k) compared to the value deduced from neutral solute retention.
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页码：223 / 229
页数：7
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