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Novel Approach for Sizing Forward Osmosis Membrane Systems

Mondal, S.; Field, R.W.; Wu, J.J.

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Authors

S. Mondal

R.W. Field



Abstract

Analytical solutions for sizing ideal Forward Osmosis membrane systems are developed for both co-current and counter-current flow configurations. They are integral solutions of the mass balance equations, including the one representing transfer across the membrane. Salt passage is assumed to be zero but allowance is made for concentration polarisation. The solutions presented obviate the need for approximations based upon a log mean driving force which are only mere approximations when there is transfer of mass from one side of the transfer surface to the other. Secondly a comparison between the estimates of areas using a log-mean approximation and the calculated areas using the analytical solution shows that the former will generate significant errors at high recoveries for the case of counter-current flow. Thirdly the potential recovery is also elucidated for various combinations of salinity, flow rate ratios and flow arrangement.

Citation

Mondal, S., Field, R., & Wu, J. (2017). Novel Approach for Sizing Forward Osmosis Membrane Systems. Journal of Membrane Science, 541, 321-328. https://doi.org/10.1016/j.memsci.2017.07.019

Journal Article Type Article
Acceptance Date Jul 9, 2017
Online Publication Date Jul 11, 2017
Publication Date Nov 1, 2017
Deposit Date Jul 27, 2017
Publicly Available Date Jul 11, 2018
Journal Journal of Membrane Science
Print ISSN 0376-7388
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 541
Pages 321-328
DOI https://doi.org/10.1016/j.memsci.2017.07.019

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