Purification of ultra-high saline and contaminated water by multi-stage ion concentration polarization (ICP) desalination
US10252924B2 · kind B2 · utility
2Cited by
1References
11Claims
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Key dates
| Filing date | Oct 23, 2015 |
| Grant date | Apr 9, 2019 |
| Priority date | — |
| Expiry date | Jul 5, 2037 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F2301/04
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.