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Adhesion Forces Between Humic Acid Functionalized Colloidal Probes and Polymer Membranes to Assess Fouling Potential

Daniel Johnson Orcid Logo, Francesco Galiano, Shamim Ahmed Deowan, Jan Hoinkis, Alberto Figoli, Nidal Hilal

Journal of Membrane Science, Volume: 484, Pages: 35 - 46

Swansea University Authors: Daniel Johnson Orcid Logo, Nidal Hilal

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DOI (Published version): 10.1016/j.memsci.2015.03.018

Abstract

Fouling of membrane surfaces by organic, inorganic and biological materials is a significant cause of increased operational costs and power consumption for membrane separation processes including reverse osmosis, nanofiltration, membrane bioreactors and membrane distillation. Novel polymeric membran...

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Published in: Journal of Membrane Science
ISSN: 0376-7388
Published: 2015
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URI: https://cronfa.swan.ac.uk/Record/cronfa20302
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first_indexed 2015-03-17T03:03:18Z
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spelling 2020-09-07T14:27:36.0067692 v2 20302 2015-03-12 Adhesion Forces Between Humic Acid Functionalized Colloidal Probes and Polymer Membranes to Assess Fouling Potential 4bdcc306062428d2715b0dd308cc092f 0000-0001-6921-0389 Daniel Johnson Daniel Johnson true false 3acba771241d878c8e35ff464aec0342 Nidal Hilal Nidal Hilal true false 2015-03-12 Fouling of membrane surfaces by organic, inorganic and biological materials is a significant cause of increased operational costs and power consumption for membrane separation processes including reverse osmosis, nanofiltration, membrane bioreactors and membrane distillation. Novel polymeric membrane surfaces are being developed by numerous research groups to counter foulant attachment and build up. One such type of membranes under development are ones which contain an active surface created using polymeric bicontinuous microemulsions (PBM) [1]. In this work we use humic acid functionalised colloidal probes to simulate organic foulants to investigate the adhesion forces between polymer membranes modified with a PBM coating, both in high purity water and model textile dye wastewater (MTDW). Membrane performance varied considerably when comparing different preparations and with the commercial PES membrane which was used as the base-layer. When making measurements in the two liquid media it was found that the behaviour was very different, with some membranes showing low adhesion in water showing high adhesion in the textile dye wastewater and vice versa. Water contact angle measurements of clean membranes showed good correlation with measured adhesion forces. Conversely, contact angle measurements made with membranes after prolonged exposure to MTDW showed a strong inverse correlation with the measured adhesion forces in MTDW, with more hydrophilic surfaces showing greater adhesion with the functionalised probe. Measurements of contact angle of humic acid before and after exposure to MTDW showed a change from a hydrophobic substance (129°) to a moderately hydrophilic substance (29°). These measurements suggest that the modification of both membranes and probe by components in the MTDW changed the adhesion forces experienced by the HA probe from favouring hydrophobic interactions to hydrophilic ones. Journal Article Journal of Membrane Science 484 35 46 0376-7388 Adhesion, Humic Acid, Colloidal probes, polymer membranes, fouling 15 6 2015 2015-06-15 10.1016/j.memsci.2015.03.018 COLLEGE NANME COLLEGE CODE Swansea University 2020-09-07T14:27:36.0067692 2015-03-12T10:11:42.7325489 Faculty of Science and Engineering School of Engineering and Applied Sciences - Uncategorised Daniel Johnson 0000-0001-6921-0389 1 Francesco Galiano 2 Shamim Ahmed Deowan 3 Jan Hoinkis 4 Alberto Figoli 5 Nidal Hilal 6
title Adhesion Forces Between Humic Acid Functionalized Colloidal Probes and Polymer Membranes to Assess Fouling Potential
spellingShingle Adhesion Forces Between Humic Acid Functionalized Colloidal Probes and Polymer Membranes to Assess Fouling Potential
Daniel Johnson
Nidal Hilal
title_short Adhesion Forces Between Humic Acid Functionalized Colloidal Probes and Polymer Membranes to Assess Fouling Potential
title_full Adhesion Forces Between Humic Acid Functionalized Colloidal Probes and Polymer Membranes to Assess Fouling Potential
title_fullStr Adhesion Forces Between Humic Acid Functionalized Colloidal Probes and Polymer Membranes to Assess Fouling Potential
title_full_unstemmed Adhesion Forces Between Humic Acid Functionalized Colloidal Probes and Polymer Membranes to Assess Fouling Potential
title_sort Adhesion Forces Between Humic Acid Functionalized Colloidal Probes and Polymer Membranes to Assess Fouling Potential
author_id_str_mv 4bdcc306062428d2715b0dd308cc092f
3acba771241d878c8e35ff464aec0342
author_id_fullname_str_mv 4bdcc306062428d2715b0dd308cc092f_***_Daniel Johnson
3acba771241d878c8e35ff464aec0342_***_Nidal Hilal
author Daniel Johnson
Nidal Hilal
author2 Daniel Johnson
Francesco Galiano
Shamim Ahmed Deowan
Jan Hoinkis
Alberto Figoli
Nidal Hilal
format Journal article
container_title Journal of Membrane Science
container_volume 484
container_start_page 35
publishDate 2015
institution Swansea University
issn 0376-7388
doi_str_mv 10.1016/j.memsci.2015.03.018
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 - Uncategorised{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Engineering and Applied Sciences - Uncategorised
document_store_str 0
active_str 0
description Fouling of membrane surfaces by organic, inorganic and biological materials is a significant cause of increased operational costs and power consumption for membrane separation processes including reverse osmosis, nanofiltration, membrane bioreactors and membrane distillation. Novel polymeric membrane surfaces are being developed by numerous research groups to counter foulant attachment and build up. One such type of membranes under development are ones which contain an active surface created using polymeric bicontinuous microemulsions (PBM) [1]. In this work we use humic acid functionalised colloidal probes to simulate organic foulants to investigate the adhesion forces between polymer membranes modified with a PBM coating, both in high purity water and model textile dye wastewater (MTDW). Membrane performance varied considerably when comparing different preparations and with the commercial PES membrane which was used as the base-layer. When making measurements in the two liquid media it was found that the behaviour was very different, with some membranes showing low adhesion in water showing high adhesion in the textile dye wastewater and vice versa. Water contact angle measurements of clean membranes showed good correlation with measured adhesion forces. Conversely, contact angle measurements made with membranes after prolonged exposure to MTDW showed a strong inverse correlation with the measured adhesion forces in MTDW, with more hydrophilic surfaces showing greater adhesion with the functionalised probe. Measurements of contact angle of humic acid before and after exposure to MTDW showed a change from a hydrophobic substance (129°) to a moderately hydrophilic substance (29°). These measurements suggest that the modification of both membranes and probe by components in the MTDW changed the adhesion forces experienced by the HA probe from favouring hydrophobic interactions to hydrophilic ones.
published_date 2015-06-15T03:23:55Z
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score 11.013731

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