Natural organic matter interactions with polyamide and polysulfone membranes: Formation of conditioning film

Handle URI:
http://hdl.handle.net/10754/348536
Title:
Natural organic matter interactions with polyamide and polysulfone membranes: Formation of conditioning film
Authors:
Gutierrez, Leonardo; Aubry, Cyril; Valladares Linares, Rodrigo ( 0000-0003-3790-3249 ) ; Croue, Jean-Philippe
Abstract:
A conditioning film changes the physicochemical properties of the membrane surface and strongly affects subsequent fouling behavior. Results from this Atomic Force Microscopy study indicate that Natural Organic Matter (NOM) characteristics, membrane surface properties, and solution chemistry are fundamental during conditioning film formation. Repulsive forces were observed between HUM (humic-NOM) and Polyamide (PA) or Polysulfone (PS) membranes during approach in Na+ and Ca2+ solutions. However, repulsive and attractive forces were randomly recorded during BIOP (biopolymer-NOM) approach to both membranes, possibly caused by low electrostatic repulsion, hydrogen bonding, and presence of chemically/physically heterogeneous regions on membrane surfaces. During retracting, Ca2+ ions increased HUM adhesion to PA and PS membrane, indicating cation bridging/complexation as dominant interacting mechanism for this isolate. BIOP adsorption on PS and PA membrane was stronger than HUM under similar solution conditions, where hydrogen bonding would play an important role. Additionally, irrespective of solution conditions, higher adhesion energy was recorded on PS than on PA membrane for both NOM isolates, indicating membrane hydrophobicity as an important interacting factor. Results from this research will advance our understanding of conditioning film formation for NOM isolates and membranes of different physicochemical characteristics.
KAUST Department:
Water Desalination and Reuse Research Center (WDRC)
Citation:
Gutierrez, L., Aubry, C., Valladares, R., & Croue, J. P. (2015). Natural organic matter interactions with polyamide and polysulfone membranes: Formation of conditioning film. Colloids and Surfaces A: Physicochemical and Engineering Aspects.
Publisher:
Elsevier BV
Journal:
Colloids and Surfaces A: Physicochemical and Engineering Aspects
Issue Date:
31-Mar-2015
DOI:
10.1016/j.colsurfa.2015.03.031
Type:
Article
ISSN:
0927-7757
Additional Links:
http://www.sciencedirect.com/science/article/pii/S092777571500268X#
Appears in Collections:
Articles; Water Desalination and Reuse Research Center (WDRC)

Full metadata record

DC FieldValue Language
dc.contributor.authorGutierrez, Leonardoen
dc.contributor.authorAubry, Cyrilen
dc.contributor.authorValladares Linares, Rodrigoen
dc.contributor.authorCroue, Jean-Philippeen
dc.date.accessioned2015-04-06T08:25:33Zen
dc.date.available2015-04-06T08:25:33Zen
dc.date.issued2015-03-31en
dc.identifier.citationGutierrez, L., Aubry, C., Valladares, R., & Croue, J. P. (2015). Natural organic matter interactions with polyamide and polysulfone membranes: Formation of conditioning film. Colloids and Surfaces A: Physicochemical and Engineering Aspects.en
dc.identifier.issn0927-7757en
dc.identifier.doi10.1016/j.colsurfa.2015.03.031en
dc.identifier.urihttp://hdl.handle.net/10754/348536en
dc.description.abstractA conditioning film changes the physicochemical properties of the membrane surface and strongly affects subsequent fouling behavior. Results from this Atomic Force Microscopy study indicate that Natural Organic Matter (NOM) characteristics, membrane surface properties, and solution chemistry are fundamental during conditioning film formation. Repulsive forces were observed between HUM (humic-NOM) and Polyamide (PA) or Polysulfone (PS) membranes during approach in Na+ and Ca2+ solutions. However, repulsive and attractive forces were randomly recorded during BIOP (biopolymer-NOM) approach to both membranes, possibly caused by low electrostatic repulsion, hydrogen bonding, and presence of chemically/physically heterogeneous regions on membrane surfaces. During retracting, Ca2+ ions increased HUM adhesion to PA and PS membrane, indicating cation bridging/complexation as dominant interacting mechanism for this isolate. BIOP adsorption on PS and PA membrane was stronger than HUM under similar solution conditions, where hydrogen bonding would play an important role. Additionally, irrespective of solution conditions, higher adhesion energy was recorded on PS than on PA membrane for both NOM isolates, indicating membrane hydrophobicity as an important interacting factor. Results from this research will advance our understanding of conditioning film formation for NOM isolates and membranes of different physicochemical characteristics.en
dc.publisherElsevier BVen
dc.relation.urlhttp://www.sciencedirect.com/science/article/pii/S092777571500268X#en
dc.rightsCopyright © 2015 Published by Elsevier B.V.en
dc.titleNatural organic matter interactions with polyamide and polysulfone membranes: Formation of conditioning filmen
dc.typeArticleen
dc.contributor.departmentWater Desalination and Reuse Research Center (WDRC)en
dc.identifier.journalColloids and Surfaces A: Physicochemical and Engineering Aspectsen
dc.eprint.versionPost-printen
dc.contributor.institutionCurtin Water Quality Research Centre, Department of Chemistry, Curtin University, Australiaen
dc.contributor.institutionFacultad del Mar y Medio Ambiente, Universidad del Pacifico, Guayaquil, Ecuadoren
dc.contributor.institutionDelft University of Technology, Faculty of Applied Sciences, Department of Biotechnology, Delft, The Netherlandsen
kaust.authorValladares Linares, Rodrigoen
kaust.authorCroue, Jean-Philippeen
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