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Water transport properties of boron nitride nanosheets mixed matrix membranes for humic acid removal

Tang, C. Y. and Zulhairun, A. K. and Wong, T. W. and Alireza, S. and Marzuki, M. S. A. and Ismail, A. F. (2019) Water transport properties of boron nitride nanosheets mixed matrix membranes for humic acid removal. Heliyon . ISSN 2405-8440

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Official URL: http://www.dx.doi.org/10.1016/j.heliyon.2019.e0114...

Abstract

Ultrafiltration grade polysulfone-based mixed matrix membranes (MMMs) incorporated with two-dimensional boron nitride nanosheet (BNNS) was prepared via phase inversion method. The amount of BN incorporated was varied and the influence on membrane morphology, contact angle, surface charge, as well as water permeability and humic acid rejection were investigated. Results revealed that the addition of BN to the membrane matrix resulted in profound increase in water permeability (almost tripled to that of neat PSf) and humic acid rejection due to the increase in pore size and surface negative charge. Beyond the morphological changes imparted by the inclusion of BNNS, we postulated that the presence of BNNS within the membrane matrix also contribute to the enhancement in flux and rejection based on surface-slip and selective interlayer transport. Despite the favourable augmentation of water transport and filtration performance, the MMMs suffered with fouling problem due to the entrapment of foulant within the enlarged pores and the membrane valleys. Its inherent adsorptive character could be a disadvantage when utilized as membrane filler.

Item Type:Article
Uncontrolled Keywords:chemical engineering, materials chemistry, nanotechnology
Subjects:T Technology > TP Chemical technology
Divisions:Chemical and Energy Engineering
ID Code:89173
Deposited By: Narimah Nawil
Deposited On:26 Jan 2021 16:48
Last Modified:26 Jan 2021 16:48

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