Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/153940
Title: On the control strategy to improve the salt rejection of a thin-film composite reverse osmosis membrane
Authors: Lee, Jaewoo 
Lim, Yu Jie
Keywords: Engineering::Civil engineering
Issue Date: 2021
Source: Lee, J. & Lim, Y. J. (2021). On the control strategy to improve the salt rejection of a thin-film composite reverse osmosis membrane. Applied Sciences, 11(16), 7619-. https://dx.doi.org/10.3390/app11167619
Journal: Applied Sciences
Abstract: Since the specific energy consumption (SEC) required for reverse osmosis (RO) desalination has been steeply reduced over the past few decades, there is an increasing demand for high-selectivity membranes. However, it is still hard to find research papers empirically dealing with increasing the salt rejection of RO membranes and addressing the SEC change possibly occurring while increasing salt rejection. Herein, we examined the feasibility of the process and material approaches to increase the salt rejection of RO membranes from the perspective of the SEC and weighed up a better approach to increase salt rejection between the two approaches. A process approach was confirmed to have some inherent limitations in terms of the trade-off between water permeability and salt rejection. Furthermore, a process approach is inappropriate to alter the intrinsic salt permeability of RO membranes, such that it should be far from a fundamental improvement in the selectivity of RO membranes. Thus, we could conclude that a material approach is necessary to make a fundamental improvement in the selectivity of RO membranes. This paper also provides discussion on the specific demands for RO membranes featuring superior mechanical properties and excellent water/salt permselectivity to minimize membrane compaction while maximizing the selectivity.
URI: https://hdl.handle.net/10356/153940
ISSN: 2076-3417
DOI: 10.3390/app11167619
Rights: © 2021 The Author(s). Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https:// creativecommons.org/licenses/by/4.0/).
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:CEE Journal Articles
IGS Journal Articles

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