Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/87577
Title: High-performance reverse osmosis membranes fabricated on highly porous microstructured supports
Authors: Lee, Jaewoo
Wang, Rong
Bae, Tae-Hyun
Keywords: Reverse Osmosis
Thin-film Composite
Issue Date: 2018
Source: Lee, J., Wang, R., & Bae, T.-H. (2018). High-performance reverse osmosis membranes fabricated on highly porous microstructured supports. Desalination, 436, 48-55.
Series/Report no.: Desalination
Abstract: Increasing the surface porosity of a support membrane has been proposed as an effective way to improve the water permeability of thin-film composite (TFC) reverse osmosis (RO) membranes by reducing the diffusion pathway in the active layer. In this work, we prepared a highly porous microstructured (HPμS) support membrane with a suitable mechanical strength to enhance the water permeability of an RO membrane. The HPμS support membrane was prepared by increasing the thermodynamic instability of a 10 wt% polymer solution and thereby facilitating rapid desolvation. The rapid desolvation formed the narrow and regularly arranged pore structure in the sublayer, and we proposed the mechanism for the sublayer structure formation based on analyses of the thermodynamic properties of such a binary system. Owing to the narrow and regular structure, the HPμS support membranes showed the exceptional mechanical strength, which was comparable to the strength of support membranes used for conventional RO membranes. Also, the HPμS support membranes successfully endowed an in-house RO membrane with the performance (water permeability of 4.68 L m−2 h−1 bar−1 and NaCl rejection of 98.3%) surpassing commercial RO membranes and thin-film nanocomposite membranes recently reported in the literature.
URI: https://hdl.handle.net/10356/87577
http://hdl.handle.net/10220/44482
ISSN: 0011-9164
DOI: http://dx.doi.org/10.1016/j.desal.2018.01.037
Rights: © 2018 Elsevier.
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:CEE Journal Articles
NEWRI Journal Articles
SCBE Journal Articles

Google ScholarTM

Check

Altmetric

Items in DR-NTU are protected by copyright, with all rights reserved, unless otherwise indicated.