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Ion concentration polarization-electrocoagulation hybrid water treatment system

United States Patent

December 26, 2017
View the Complete Patent at the US Patent & Trademark Office
Between two juxtaposed similar ion exchange membranes (AEMs or CEMs), an ion depletion zone and ion enrichment zone are generated under an electric field. As cations are selectively transferred through the CEMs, for example, anions are relocated in order to achieve electro-neutrality, resulting in the concentration drop (increase) in ion depletion (enrichment) zone. The use of a sacrificial metal anode allows electrocoagulation (EC) concurrently with ICP thereby permitting concentration of both ionic and non-ionic impurities to occur at the same time within the same cell or device.
Choi; Siwon (Cambridge, MA), Han; Jongyoon (Bedford, MA)
Massachusetts Institute of Technology (Cambridge, MA)
14/ 857,133
September 17, 2015
GOVERNMENT SUPPORT This invention was made with government support under Contract No. 6927935 and OSP Project No. 6927935 awarded by the Advanced Research Project Agency--Energy (ARPA-E). The government has certain rights in the invention.