A team from MIT has developed a way to desalinate water using shock waves, which could significantly reduce the amount of energy currently used to purify salt water.
The technology, called shock electrodialysis, forces a shock wave of electrical current that pushes the flowing, salty water through a porous, glass material and a sandwich of membranes or electrodes. As the current moves through the system, the salt water is separated into areas of salt depletion or salt enriched. And when the electrical current reaches a critical point, a shock wave is created that divides the flow of water by creating a “barrier” that separates the fresh water from the salty water.
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