Overview
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Read the articleAUTHORS
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Hélène ROUX de BALMANN: Research Director, CNRS
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Ernest CASADEMONT: CNRS research engineer - Chemical Engineering Laboratory-UMR 5503 (Toulouse)
INTRODUCTION
Electrodialysis was developed as an industrial-scale seawater desalination process, in particular to meet Japan's drinking water requirements. In addition to water treatment, new applications were subsequently developed, such as the demineralization of whey, which accounts for a significant proportion of the installed surface area. The problems associated with reducing the environmental impact of production processes open up even wider prospects for physical processes such as electrodialysis, as opposed to more polluting physical-chemical processes such as liquid-liquid extraction, precipitation or resin ion exchange. In addition, the possibility of selective demineralization, i.e. accompanied by purification, should also open up new market prospects.
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Electrodialysis
Principle and definitions
References
Some recent theses
Characteristics of electrodialysis membranes
The properties of "standard" ion exchange membranes (IEMs) are given in Table 1 ; those of specific membranes are presented in Table 2 .
Refer to paragraph 2.1.3 of the file for further information.
Bipolar membrane systems
The worldwide development of bipolar membrane electrodialysis plants is summarized in table 3 .
Manufacturers – Suppliers
(non-exhaustive list)
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Electrodialysis membranes
The main manufacturers of electrodialysis membranes are listed in Table 4 .
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Suppliers of electrodialysis equipment
European electrodialysis equipment...
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