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Investigation of UF membranes fouling and potentials as pre-treatment step in desalination and surface water applications

Saif Al Aani, Chris J. Wright, N. Hilal, Christopher Wright Orcid Logo, Nidal Hilal

Desalination, Volume: 432, Pages: 115 - 127

Swansea University Authors: Christopher Wright Orcid Logo, Nidal Hilal

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DOI (Published version): 10.1016/j.desal.2018.01.017

Abstract

The surface fouling of UF membranes used upstream as pre-treatment stage is critical for the long-term stability of the subsequent treatment stage (NF/RO membranes). In this paper, an attempt was made to probe and compare the potential of versatile UF membranes structures in terms of flux decline an...

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Published in: Desalination
ISSN: 0011-9164
Published: Elsevier 2018
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URI: https://cronfa.swan.ac.uk/Record/cronfa38075
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spelling 2018-03-06T12:40:32.0848492 v2 38075 2018-01-12 Investigation of UF membranes fouling and potentials as pre-treatment step in desalination and surface water applications 235e125ac3463e2ee7fc98604bf879ce 0000-0003-2375-8159 Christopher Wright Christopher Wright true false 3acba771241d878c8e35ff464aec0342 Nidal Hilal Nidal Hilal true false 2018-01-12 MEDE The surface fouling of UF membranes used upstream as pre-treatment stage is critical for the long-term stability of the subsequent treatment stage (NF/RO membranes). In this paper, an attempt was made to probe and compare the potential of versatile UF membranes structures in terms of flux decline and selectivity, for more convenient pretreatment membranes selection. The role of polyethersulfone (PES) host polymer concentration, on the morphology and surface characteristics of asymmetric flat sheet ultrafiltration (UF) membranes, has been comprehensively investigated. Distinctly, as the casting solution viscosity decrease, a higher pore size, pore size distribution and pure water flux was observed along with lower mechanical properties and wider cross-section morphologies. However, this impact was trivial on water contact angle, surface roughness parameters and charge negativity of the membrane. To further assess the potential performance of the hand-made fabricated membranes, they were systematically evaluated against three organic model foulants with dissimilar origins; humic acid (HA) – as natural organic matters (NOM), sodium alginate (NaAlg) – as polysaccharide, and bovine serum albumin (BSA) – as protein, under different initial feed concentration and pH chemistry. A disparate fouling behavior was observed depending on the membrane characteristics and the organic model foulant used. Depending on the UF membrane cut-off used, lower MWCO membranes, PES22 (6 kDa) and PES20 (10 kDa) exhibited a negligible relative flux decline while extremely low relative flux patterns were observed in the filtration with the 100 kDa membrane (PES16), as a result of one or more pore blocking mechanisms observed. Journal Article Desalination 432 115 127 Elsevier 0011-9164 Pre-treatment; Desalination; Polyethersulfone membrane; PES concentration; Humic acid; Bovine serum albumin; Sodium alginate; Fouling 15 4 2018 2018-04-15 10.1016/j.desal.2018.01.017 COLLEGE NANME Biomedical Engineering COLLEGE CODE MEDE Swansea University 2018-03-06T12:40:32.0848492 2018-01-12T15:29:22.5263057 Faculty of Science and Engineering School of Engineering and Applied Sciences - Biomedical Engineering Saif Al Aani 1 Chris J. Wright 2 N. Hilal 3 Christopher Wright 0000-0003-2375-8159 4 Nidal Hilal 5 0038075-13012018060515.pdf DES_13619.pdf 2018-01-13T06:05:15.4530000 Output 1406799 application/pdf Accepted Manuscript true 2019-02-02T00:00:00.0000000 true eng
title Investigation of UF membranes fouling and potentials as pre-treatment step in desalination and surface water applications
spellingShingle Investigation of UF membranes fouling and potentials as pre-treatment step in desalination and surface water applications
Christopher Wright
Nidal Hilal
title_short Investigation of UF membranes fouling and potentials as pre-treatment step in desalination and surface water applications
title_full Investigation of UF membranes fouling and potentials as pre-treatment step in desalination and surface water applications
title_fullStr Investigation of UF membranes fouling and potentials as pre-treatment step in desalination and surface water applications
title_full_unstemmed Investigation of UF membranes fouling and potentials as pre-treatment step in desalination and surface water applications
title_sort Investigation of UF membranes fouling and potentials as pre-treatment step in desalination and surface water applications
author_id_str_mv 235e125ac3463e2ee7fc98604bf879ce
3acba771241d878c8e35ff464aec0342
author_id_fullname_str_mv 235e125ac3463e2ee7fc98604bf879ce_***_Christopher Wright
3acba771241d878c8e35ff464aec0342_***_Nidal Hilal
author Christopher Wright
Nidal Hilal
author2 Saif Al Aani
Chris J. Wright
N. Hilal
Christopher Wright
Nidal Hilal
format Journal article
container_title Desalination
container_volume 432
container_start_page 115
publishDate 2018
institution Swansea University
issn 0011-9164
doi_str_mv 10.1016/j.desal.2018.01.017
publisher Elsevier
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Engineering and Applied Sciences - Biomedical Engineering{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Engineering and Applied Sciences - Biomedical Engineering
document_store_str 1
active_str 0
description The surface fouling of UF membranes used upstream as pre-treatment stage is critical for the long-term stability of the subsequent treatment stage (NF/RO membranes). In this paper, an attempt was made to probe and compare the potential of versatile UF membranes structures in terms of flux decline and selectivity, for more convenient pretreatment membranes selection. The role of polyethersulfone (PES) host polymer concentration, on the morphology and surface characteristics of asymmetric flat sheet ultrafiltration (UF) membranes, has been comprehensively investigated. Distinctly, as the casting solution viscosity decrease, a higher pore size, pore size distribution and pure water flux was observed along with lower mechanical properties and wider cross-section morphologies. However, this impact was trivial on water contact angle, surface roughness parameters and charge negativity of the membrane. To further assess the potential performance of the hand-made fabricated membranes, they were systematically evaluated against three organic model foulants with dissimilar origins; humic acid (HA) – as natural organic matters (NOM), sodium alginate (NaAlg) – as polysaccharide, and bovine serum albumin (BSA) – as protein, under different initial feed concentration and pH chemistry. A disparate fouling behavior was observed depending on the membrane characteristics and the organic model foulant used. Depending on the UF membrane cut-off used, lower MWCO membranes, PES22 (6 kDa) and PES20 (10 kDa) exhibited a negligible relative flux decline while extremely low relative flux patterns were observed in the filtration with the 100 kDa membrane (PES16), as a result of one or more pore blocking mechanisms observed.
published_date 2018-04-15T03:48:06Z
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score 11.036815

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