Effect of solution concentration and composition on the electrochemical properties of ion exchange membranes for energy conversion

被引：72

作者：

Fontananova, E. ^{[1
]}

Messana, D. ^{[2
]}

Tufa, R. A. ^{[2
]}

Nicotera, I. ^{[3
]}

Kosma, V. ^{[3
]}

Curcio, E. ^{[2
]}

van Baak, W. ^{[4
]}

Drioli, E. ^{[1
,2
]}

Di Profio, G. ^{[1
]}

机构：

[1] Natl Res Council ITM CNR, Inst Membrane Technol, Via P Bucci,Cubo 17-C, I-87036 Arcavacata Di Rende, CS, Italy

[2] Univ Calabria, Dept Environm & Chem Engn, Via P Bucci,Cubo 44A, I-87036 Arcavacata Di Rende, CS, Italy

[3] Univ Calabria, Dept Chem & Chem Technol, Via P Bucci,Cubo 14D, I-87036 Arcavacata Di Rende, CS, Italy

[4] Fujifilm Mfg Europe BV, Oudenstr 1,POB 90156, NL-5000LJ Tilburg, Netherlands

来源：

JOURNAL OF POWER SOURCES | 2017年 / 340卷

关键词：

Impedance spectroscopy; Ion exchange membranes; Ionic strength; Multivalent ions; Reverse electrodialysis; Salinity-gradient power; SALINITY GRADIENT POWER; REVERSE-ELECTRODIALYSIS; DOUBLE-LAYER; GENERATION; TRANSPORT; SEAWATER; WATER; PERFORMANCE; SIMULATION; MONOVALENT;

D O I：

10.1016/j.jpowsour.2016.11.075

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The electrochemical properties of ion exchange membranes (IEMs) applied for salinity-gradient power (SGP) harvesting, are usually measured using diluited NaCl aqueous solutions because of the prevalence of its constituents ions in natural solutions (e.g. seawater). However, in real applications, the IEMs come in contact with other ionic species than Na+ and Cl- that can have a relevant effect on their properties. As a consequence, the obtained results in many cases are not really representative. The aim of the present study was to investigate the effect of solution concentration and compositions on permselectivity, membrane and interface resistance, for both anion and cation exchange membranes (AEMs and CEMs). Special attention was paid to the influence of the most common multivalent ions in seawater (Mg2+, Ca2+ and SO42-) on the electrochemical properties of the AEM and the CEM. It was possible to discriminate the impact on the AEM from that on the CEM. The results highlighted a strong negative effect of Mg2+ on the CEM (relevant increase of ionic resistance and permselectivity) and, at minor extent, on the AEM (moderate reduction of permselectivity). (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：282 / 293

页数：12

共 58 条

[1] Brine disposal from reverse osmosis desalination plants in Oman and the United Arab Emirates [J].