3. Membranes
The membranes used in electrodialysis are essentially synthetic and can be divided into two groups according to whether or not they possess an electrical charge: selectively permeable (selectively permeable, permselective) charged membranes and neutral membranes.
Note :For further information on membranes, please refer to the article [52] in this treatise and to the articles [51][53] in the Process Engineering treatise.
Charged membranes are mainly made from organic materials, although trials are underway to make them from inorganic materials. These ionic membranes are...
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Membranes