CO2 switchable dual responsive polymers as draw solutes for forward osmosis desalination

Yufeng Cai; Wenming Shen; Rong Wang; William B. Krantz; Anthony G. Fane; Xiao Hu

doi:10.1039/C3CC43289K

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CO₂ switchable dual responsive polymers as draw solutes for forward osmosis desalination†

Yufeng Cai,^ab Wenming Shen,^ab Rong Wang,^bc William B. Krantz,^bd Anthony G. Fane^bc and Xiao Hu*^ab

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* Corresponding authors

^a School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore
E-mail: asxhu@ntu.edu.sg
Tel: +65 6790 4610

^b Singapore Membrane Technology Centre, 1 Cleantech Loop, Singapore

^c School of Civil & Environmental Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore

^d Department of Chemical and Biological Engineering, University of Colorado, USA

Abstract

Low molecular weight dual responsive polymers, after purging with CO₂, become polyelectrolytes with high osmolality, which can be used as draw solutes for seawater desalination. These polymers precipitate above their Lower Critical Solution Temperature (LCST) after removal of CO₂via purging with inert gas for ease of recovery and reuse.

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Article information

DOI: https://doi.org/10.1039/C3CC43289K
Article type: Communication
Submitted: 03 May 2013
Accepted: 04 Jul 2013
First published: 05 Jul 2013

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Chem. Commun., 2013,49, 8377-8379

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CO₂ switchable dual responsive polymers as draw solutes for forward osmosis desalination

Y. Cai, W. Shen, R. Wang, W. B. Krantz, A. G. Fane and X. Hu, Chem. Commun., 2013, 49, 8377 DOI: 10.1039/C3CC43289K

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