Polymer hydrogels as smart draw agents in forward osmosis processes

Research output: Chapter in Book/Report/Conference proceedingChapter (Book)Researchpeer-review

Abstract

This chapter discusses thermosensitive polymer hydrogels as a new class of draw agent for forward osmosis (FO) desalination. The effect of hydrogel chemistry is reviewed, including the effect of incorporating ionic chemical moieties and light-absorbing carbon particles and reduced graphene oxide nanosheets on FO desalination performance. The presence of ionic groups in the hydrogel networks provides a unique capacity for hydrogels to attract more water. The pure ionic and composite ionic hydrogels show higher flux than nonionic hydrogels do. In any FO desalination process, the separation of permeated water from the draw agent is also very important. The dewatering process of hydrogel needs the deswelling of the swollen hydrogels to release the water. Solar energy is also used to release water from graphene-incorporated hydrogel. The chapter also focuses on further optimization of hydrogel properties and structures of membranes to enhance the performance of the hydrogel-driven FO process.

Original languageEnglish
Title of host publicationForward Osmosis: Fundamentals and Applications
EditorsHo Kyong Shon, Sherub Phuntsho, Tian C. Zhang, Rao Y. Surampalli
Place of PublicationReston VA USA
PublisherAmerican Society of Civil Engineers
Chapter7
Pages129-150
Number of pages21
Edition1
ISBN (Electronic)9780784479230
ISBN (Print)9780784414071
DOIs
Publication statusPublished - 1 Jan 2015

Cite this

Razmjou, A., Simon, G. P., & Wang, H. (2015). Polymer hydrogels as smart draw agents in forward osmosis processes. In H. K. Shon, S. Phuntsho, T. C. Zhang, & R. Y. Surampalli (Eds.), Forward Osmosis: Fundamentals and Applications (1 ed., pp. 129-150). Reston VA USA: American Society of Civil Engineers. https://doi.org/10.1061/9780784414071.ch07
Razmjou, Amir ; Simon, George P. ; Wang, Huanting. / Polymer hydrogels as smart draw agents in forward osmosis processes. Forward Osmosis: Fundamentals and Applications. editor / Ho Kyong Shon ; Sherub Phuntsho ; Tian C. Zhang ; Rao Y. Surampalli. 1. ed. Reston VA USA : American Society of Civil Engineers, 2015. pp. 129-150
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Razmjou, A, Simon, GP & Wang, H 2015, Polymer hydrogels as smart draw agents in forward osmosis processes. in HK Shon, S Phuntsho, TC Zhang & RY Surampalli (eds), Forward Osmosis: Fundamentals and Applications. 1 edn, American Society of Civil Engineers, Reston VA USA, pp. 129-150. https://doi.org/10.1061/9780784414071.ch07

Polymer hydrogels as smart draw agents in forward osmosis processes. / Razmjou, Amir; Simon, George P.; Wang, Huanting.

Forward Osmosis: Fundamentals and Applications. ed. / Ho Kyong Shon; Sherub Phuntsho; Tian C. Zhang; Rao Y. Surampalli. 1. ed. Reston VA USA : American Society of Civil Engineers, 2015. p. 129-150.

Research output: Chapter in Book/Report/Conference proceedingChapter (Book)Researchpeer-review

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Razmjou A, Simon GP, Wang H. Polymer hydrogels as smart draw agents in forward osmosis processes. In Shon HK, Phuntsho S, Zhang TC, Surampalli RY, editors, Forward Osmosis: Fundamentals and Applications. 1 ed. Reston VA USA: American Society of Civil Engineers. 2015. p. 129-150 https://doi.org/10.1061/9780784414071.ch07