Purification of ultra-high saline and contaminated water by multi-stage ion concentration polarization (ICP) desalination

Patent · Tue Apr 09 00:00:00 EDT 2019

OSTI ID:1568164

Kim, Bumjoo; Han, Jongyoon; Kwak, Rhokyun; Al-Anzi, Bader Shafaqa

A water stream is passed between two juxtaposed similar ion exchange membranes (AEMs or CEMs), forming an ion depletion and ion enrichment zones when an electric field is applied. 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. Trifurcation of the output channel allows collection of concentrated, dilute and intermediate streams, with the intermediate stream serving as input to the next stage of a serialized implementation.

• Research Organization: Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AR0000294
• Assignee: Massachusetts Institute of Technology (Cambridge, MA)
• Patent Number(s): 10,252,924
• Application Number: 14/920,992
• OSTI ID: 1568164
• Resource Relation: Patent File Date: 10/23/2015
• Country of Publication: United States
• Language: English