Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/82695
Title: Energy-efficient desalination by forward osmosis using responsive ionic liquid draw solutes
Authors: Cai, Yufeng
Shen, Wenming
Wei, Jing
Chong, Tzyy Haur
Wang, Rong
Krantz, William B.
Fane, Anthony Gordon
Hu, Xiao
Keywords: Reverse osmosis
Environmental science
Issue Date: 2015
Source: Cai, Y., Shen, W., Wei, J., Chong, T. H., Wang, R., Krantz, W. B., et al. (2015). Energy-efficient desalination by forward osmosis using responsive ionic liquid draw solutes. Environmental Science: Water Research & Technology, 1(3), 341-347.
Series/Report no.: Environmental Science: Water Research & Technology
Abstract: We demonstrate a class of thermally responsive ionic liquids (ILs) as novel draw solutes for forward osmosis (FO) seawater desalination with electrical energy consumption significantly lower than that of seawater reverse osmosis (RO). These draw solutes can draw water from feed solutions of up to 1.6 M NaCl and hence have potential to treat high salinity feed streams including RO brine. Draw solution regeneration can be achieved energy-efficiently via a thermally stimulated phase separation process using less expensive low grade heat in combination with electrically driven nanofiltration. The electrical energy consumption is estimated to be as low as 16% of that needed for the state-of-the-art RO desalination leading to significant reduction of energy cost and carbon footprint.
URI: https://hdl.handle.net/10356/82695
http://hdl.handle.net/10220/40281
DOI: 10.1039/C4EW00073K
Schools: School of Civil and Environmental Engineering 
School of Materials Science & Engineering 
Research Centres: Singapore Membrane Technology Centre 
Rights: This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:CEE Journal Articles
MSE Journal Articles

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