Colloidal interactions between model foulants and engineered surfaces: Interplay between roughness and surface energy

Fouling on submerged surfaces is a major limiting factor for membranes, heat exchangers, and marine vessels as it induces mass and heat transfer resistances that increase operating costs and lead to system failures. While the role of surface roughness on fouling has been extensively studied, the spe...

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Autores principales:	Thomas Horseman, Zhangxin Wang, Shihong Lin
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Fouling Surface roughness Surface energy Colloidal interaction Adhesion Chemical engineering TP155-156
Acceso en línea:	https://doaj.org/article/c40f479d3e5f4ddb80aeb0e0a6ccaff7
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spelling	oai:doaj.org-article:c40f479d3e5f4ddb80aeb0e0a6ccaff72021-11-18T04:52:41ZColloidal interactions between model foulants and engineered surfaces: Interplay between roughness and surface energy2666-821110.1016/j.ceja.2021.100138https://doaj.org/article/c40f479d3e5f4ddb80aeb0e0a6ccaff72021-11-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S2666821121000545https://doaj.org/toc/2666-8211Fouling on submerged surfaces is a major limiting factor for membranes, heat exchangers, and marine vessels as it induces mass and heat transfer resistances that increase operating costs and lead to system failures. While the role of surface roughness on fouling has been extensively studied, the specific effect of surface roughness on fouling is debated in literature. In this study, we employed force spectroscopy based on atomic force microscopy with two model colloidal probes to elucidate the role of surface roughness on foulant-surface interactions. Specifically, we quantified the strength and characteristic lengths of the interactions between the colloidal probes and hydrophilic and hydrophobic surfaces with and without surface texture. We found that hydrophilic surfaces are generally less prone to foulant adhesion than hydrophobic surfaces and that increasing roughness of a hydrophilic surface mitigates foulant adhesion. In comparison, we found that increased roughness of a hydrophobic surface increases the attractive foulant-surface interaction, and thus, its fouling propensity. Based on the results from this study, the implications for developing surfaces with fouling resistance are also examined.Thomas HorsemanZhangxin WangShihong LinElsevierarticleFoulingSurface roughnessSurface energyColloidal interactionAdhesionChemical engineeringTP155-156ENChemical Engineering Journal Advances, Vol 8, Iss , Pp 100138- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Fouling Surface roughness Surface energy Colloidal interaction Adhesion Chemical engineering TP155-156
spellingShingle	Fouling Surface roughness Surface energy Colloidal interaction Adhesion Chemical engineering TP155-156 Thomas Horseman Zhangxin Wang Shihong Lin Colloidal interactions between model foulants and engineered surfaces: Interplay between roughness and surface energy
description	Fouling on submerged surfaces is a major limiting factor for membranes, heat exchangers, and marine vessels as it induces mass and heat transfer resistances that increase operating costs and lead to system failures. While the role of surface roughness on fouling has been extensively studied, the specific effect of surface roughness on fouling is debated in literature. In this study, we employed force spectroscopy based on atomic force microscopy with two model colloidal probes to elucidate the role of surface roughness on foulant-surface interactions. Specifically, we quantified the strength and characteristic lengths of the interactions between the colloidal probes and hydrophilic and hydrophobic surfaces with and without surface texture. We found that hydrophilic surfaces are generally less prone to foulant adhesion than hydrophobic surfaces and that increasing roughness of a hydrophilic surface mitigates foulant adhesion. In comparison, we found that increased roughness of a hydrophobic surface increases the attractive foulant-surface interaction, and thus, its fouling propensity. Based on the results from this study, the implications for developing surfaces with fouling resistance are also examined.
format	article
author	Thomas Horseman Zhangxin Wang Shihong Lin
author_facet	Thomas Horseman Zhangxin Wang Shihong Lin
author_sort	Thomas Horseman
title	Colloidal interactions between model foulants and engineered surfaces: Interplay between roughness and surface energy
title_short	Colloidal interactions between model foulants and engineered surfaces: Interplay between roughness and surface energy
title_full	Colloidal interactions between model foulants and engineered surfaces: Interplay between roughness and surface energy
title_fullStr	Colloidal interactions between model foulants and engineered surfaces: Interplay between roughness and surface energy
title_full_unstemmed	Colloidal interactions between model foulants and engineered surfaces: Interplay between roughness and surface energy
title_sort	colloidal interactions between model foulants and engineered surfaces: interplay between roughness and surface energy
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/c40f479d3e5f4ddb80aeb0e0a6ccaff7
work_keys_str_mv	AT thomashorseman colloidalinteractionsbetweenmodelfoulantsandengineeredsurfacesinterplaybetweenroughnessandsurfaceenergy AT zhangxinwang colloidalinteractionsbetweenmodelfoulantsandengineeredsurfacesinterplaybetweenroughnessandsurfaceenergy AT shihonglin colloidalinteractionsbetweenmodelfoulantsandengineeredsurfacesinterplaybetweenroughnessandsurfaceenergy
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Colloidal interactions between model foulants and engineered surfaces: Interplay between roughness and surface energy

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