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Reverse Electrodialysis

Salinity gradient technologies using reverse electrodialysis (RED) generate electricity from the controlled mixing of two water bodies with different salinities. RED technology typically consists of several cation and anion exchange membranes assembled to form high and low salinity compartments. When salt water and freshwater are fed through these membranes, the opposing transport of positively and negatively charged ions creates charged poles similar to a battery (references).

Reverse Electrodialysis - Courtesy of Logan & Elimelech 2012 0.JPG


1 Devices using this technology

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Last modified: 2024-10-10