eprintid: 16188
rev_number: 2
eprint_status: archive
userid: 1
dir: disk0/00/01/61/88
datestamp: 2023-12-19 03:22:44
lastmod: 2023-12-19 03:22:44
status_changed: 2023-12-19 03:05:48
type: article
metadata_visibility: show
creators_name: Ilyas, A.
creators_name: Hartanto, Y.
creators_name: Lee, L.C.
creators_name: Vankelecom, I.F.J.
title: Micro-patterned cellulose triacetate membranes for forward osmosis: Synthesis, performance and anti-fouling behavior
ispublished: pub
keywords: Cellulose; Micromachining; Polarization; Porosity, Anti-foulings; Cellulose triacetate; Concentration polarization; Forward osmosis; High porosity; Micro patterning; Micropatterned; Non-solvents; Phase inversion; Water flux, Solvents, antifouling; cellulose; concentration (composition); desalination; membrane; osmosis, Cellulose Triacetate; Membranes; Polarization; Porosity; Solutes; Solvents
note: cited By 4
abstract: Most cellulose triacetate (CTA)-based studies for forward osmosis (FO) have greatly focused on achieving asymmetric membranes with a highly porous sublayer along with a dense selective layer. Such membranes can achieve better fluxes due to improved mass transfer and reduced internal concentration polarization. In this work, patterning of the CTA-membranes via modification of the conventional non-solvent induced phase inversion is explored as an alternative route to increase FO water flux without reducing salt selectivity. The modified way of applying the non-solvent in this method increased the membrane bulk porosity from ~17  to ~50 . Such high porosity and reduced tortuosity of the patterned membrane can reduce the internal concentration polarization by back-transport and reduced accumulation of salt and other solutes in the porous support. During FO, the patterned CTA membrane showed a water flux of 30 L m�2 h�1 and reverse salt flux of 25 g m�2 h�1, thanks to the increased effective membrane area, low water transport resistance, and high porosity of the membrane support. The patterned CTA-membranes may have potential in FO for applications with larger draw solutes due to the slightly larger pores on the membrane surface following the non-solvent spraying. Alternatively, some phase inversion parameters can still be further tuned to lower the salt passage. © 2022
date: 2022
publisher: Elsevier B.V.
official_url: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85137035224&doi=10.1016%2fj.desal.2022.116076&partnerID=40&md5=f9371e7298bad9153c4ca004152f39e5
id_number: 10.1016/j.desal.2022.116076
full_text_status: none
publication: Desalination
volume: 542
refereed: TRUE
issn: 00119164
citation:   Ilyas, A. and Hartanto, Y. and Lee, L.C. and Vankelecom, I.F.J.  (2022) Micro-patterned cellulose triacetate membranes for forward osmosis: Synthesis, performance and anti-fouling behavior.  Desalination, 542.   ISSN 00119164