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- Publisher Website: 10.1016/j.memsci.2021.119679
- Scopus: eid_2-s2.0-85112487191
- WOS: WOS:000691537300002
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Article: Dissect the role of particle size through collision-attachment simulations for colloidal fouling of RO/NF membranes
Title | Dissect the role of particle size through collision-attachment simulations for colloidal fouling of RO/NF membranes |
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Authors | |
Keywords | Colloidal size Specific cake resistance Back-diffusion Hydrodynamic drag interaction Foulant-membrane interaction |
Issue Date | 2021 |
Publisher | Elsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/memsci |
Citation | Journal of Membrane Science, 2021, v. 638, p. article no. 119679 How to Cite? |
Abstract | Colloidal size affects the whole process of particle transport and membrane filtration. However, its compound effect on fouling remains controversial. In the present study, we adopt a collision-attachment approach to systematically investigate the role of colloidal size on fouling. Our study highlights the critical importance of four competing mechanisms: reduced specific cake resistance and enhanced foulant-membrane interaction of larger particles tend to mitigate flux decline, while the simultaneously increased hydrodynamic drag and reduced particle back-transport tend to promote fouling. The net effect of particle size on fouling is governed by the competition among these mechanisms. When strong foulant-membrane repulsion prevails, we show enhanced flux stability for larger particles as a result of a greatly increased energy barrier to resist particle deposition. Nevertheless, this trend could be reversed for weak foulant-membrane interaction. Our study reconciles the contradictory experimental observations of the effect of particle size on colloidal fouling and provide important insights for effective fouling mitigation. |
Persistent Identifier | http://hdl.handle.net/10722/305301 |
ISSN | 2023 Impact Factor: 8.4 2023 SCImago Journal Rankings: 1.848 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Liu, J | - |
dc.contributor.author | Zhao, Y | - |
dc.contributor.author | Fan, Y | - |
dc.contributor.author | Yang, H | - |
dc.contributor.author | Wang, Z | - |
dc.contributor.author | Chen, Y | - |
dc.contributor.author | Tang, CY | - |
dc.date.accessioned | 2021-10-20T10:07:29Z | - |
dc.date.available | 2021-10-20T10:07:29Z | - |
dc.date.issued | 2021 | - |
dc.identifier.citation | Journal of Membrane Science, 2021, v. 638, p. article no. 119679 | - |
dc.identifier.issn | 0376-7388 | - |
dc.identifier.uri | http://hdl.handle.net/10722/305301 | - |
dc.description.abstract | Colloidal size affects the whole process of particle transport and membrane filtration. However, its compound effect on fouling remains controversial. In the present study, we adopt a collision-attachment approach to systematically investigate the role of colloidal size on fouling. Our study highlights the critical importance of four competing mechanisms: reduced specific cake resistance and enhanced foulant-membrane interaction of larger particles tend to mitigate flux decline, while the simultaneously increased hydrodynamic drag and reduced particle back-transport tend to promote fouling. The net effect of particle size on fouling is governed by the competition among these mechanisms. When strong foulant-membrane repulsion prevails, we show enhanced flux stability for larger particles as a result of a greatly increased energy barrier to resist particle deposition. Nevertheless, this trend could be reversed for weak foulant-membrane interaction. Our study reconciles the contradictory experimental observations of the effect of particle size on colloidal fouling and provide important insights for effective fouling mitigation. | - |
dc.language | eng | - |
dc.publisher | Elsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/memsci | - |
dc.relation.ispartof | Journal of Membrane Science | - |
dc.subject | Colloidal size | - |
dc.subject | Specific cake resistance | - |
dc.subject | Back-diffusion | - |
dc.subject | Hydrodynamic drag interaction | - |
dc.subject | Foulant-membrane interaction | - |
dc.title | Dissect the role of particle size through collision-attachment simulations for colloidal fouling of RO/NF membranes | - |
dc.type | Article | - |
dc.identifier.email | Tang, CY: tangc@hku.hk | - |
dc.identifier.authority | Tang, CY=rp01765 | - |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1016/j.memsci.2021.119679 | - |
dc.identifier.scopus | eid_2-s2.0-85112487191 | - |
dc.identifier.hkuros | 326758 | - |
dc.identifier.volume | 638 | - |
dc.identifier.spage | article no. 119679 | - |
dc.identifier.epage | article no. 119679 | - |
dc.identifier.isi | WOS:000691537300002 | - |
dc.publisher.place | Netherlands | - |