Supported, mechanically stable bipolar membrane for electrodialysis
AssigneeYeda Research and Development Co. Ltd.
InventorsOra Kedem, Abraham Warshawsky
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Abstract
A supported, mechanically stable bipolar membrane for electrodialysis having a cation-exchange layer on one side and an anion-exchange layer on the other side of a single sheet of woven fabric. The cation exchange layer is heterogeneous, the anion exchange layer is homogeneous and the two are interlocked. A process of making such bipolar membranes is described. The bipolar membrane may be fabricated into electrodialysis cells in which two membranes are joined along their edges.
Claims5
A supported, mechanically stable bipolar membrane for electrodialysis having two sides and having a cation-exchange layer on one side of said membrane and an anion-exchange layer on the other side of said membrane, wherein:
- i) the cation-exchange and anion-exchange layers are supported by a single sheet of woven fabric;
- ii) the cation-exchange layer is heterogeneous;
- iii) the anion-exchange layer is homogeneous;
- and
- iv) the anion-exchange layer is anchored in the cation-exchange layer whereby the anion- and cation-exchange layers are interlocked.
Dependencies are inferred from the claim text.