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Impacts of zeolite nanoparticles on substrate properties of thin film nanocomposite membranes for engineered osmosis

Salehi, Tahereh and Peyravi, Majid and Jahanshahi, Mohsen and Lau, Woei Jye and Rad, Ali Shokuhi (2018) Impacts of zeolite nanoparticles on substrate properties of thin film nanocomposite membranes for engineered osmosis. Journal of Nanoparticle Research, 20 (4). p. 113. ISSN 1388-0764

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Official URL: http://dx.doi.org/10.1007/s11051-018-4154-1

Abstract

In this work, microporous substrates modified by zeolite nanoparticles were prepared and used for composite membrane making with the aim of reducing internal concentration polarization (ICP) effect of membranes during engineered osmosis applications. Nanocomposite substrates were fabricated via phase inversion technique by embedding nanostructured zeolite (clinoptilolite) in the range of 0–0.6 wt% into matrix of polyethersulfone (PES) substrate. Of all the substrates prepared, the PES0.4 substrate (with 0.4 wt% zeolite) exhibited unique characteristics, i.e., increased surface porosity, lower structural parameter (S) (from 0.78 to 0.48 mm), and enhanced water flux. The thin film nanocomposite (TFN) membrane made of this optimized substrate was also reported to exhibit higher water flux compared to the control composite membrane during forward osmosis (FO) and pressure-retarded osmosis (PRO) test, without compromising reverse solute flux. The water flux of such TFN membrane was 43% higher than the control TFC membrane (1.93 L/m2 h bar) with salt rejection recorded at 94.7%. An increment in water flux is ascribed to the reduction in structural parameter, leading to reduced ICP effect.

Item Type:Article
Uncontrolled Keywords:Forward osmosis, Nanoscale separation
Subjects:T Technology > TP Chemical technology
Divisions:Chemical Engineering
ID Code:85506
Deposited By: Widya Wahid
Deposited On:30 Jun 2020 16:46
Last Modified:30 Jun 2020 16:46

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