Bifunctional polymer hydrogel layers as forward osmosis draw agents for continuous production of fresh water using solar energy.


The feasibility of bilayer polymer hydrogels as draw agent in forward osmosis process has been investigated. The dual-functionality hydrogels consist of a water-absorptive layer (particles of a copolymer of sodium acrylate and N-isopropylacrylamide) to provide osmotic pressure, and a dewatering layer (particles of N-isopropylacrylamide) to allow the ready… (More)
DOI: 10.1021/es403266y

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