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- Publisher Website: 10.1021/es2013177
- Scopus: eid_2-s2.0-79960951457
- PMID: 21678956
- WOS: WOS:000293196400028
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Article: Fouling of nanofiltration, reverse osmosis, and ultrafiltration membranes by protein mixtures: The role of inter-foulant-species interaction
Title | Fouling of nanofiltration, reverse osmosis, and ultrafiltration membranes by protein mixtures: The role of inter-foulant-species interaction |
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Authors | |
Issue Date | 2011 |
Publisher | American Chemical Society. The Journal's web site is located at http://pubs.acs.org/est |
Citation | Environmental Science And Technology, 2011, v. 45 n. 15, p. 6373-6379 How to Cite? |
Abstract | Protein fouling of nanofiltration (NF), reverse osmosis (RO), and ultrafiltration (UF) membranes by bovine serum albumin (BSA), lysozyme (LYS), and their mixture was investigated under cross-flow conditions. The effect of solution chemistry, membrane properties, and permeate flux level was systematically studied. When the solution pH was within the isoelectric points (IEPs) of the two proteins (i.e., pH 4.7-10.4), the mixed protein system experienced more severe flux decline compared to the respective single protein systems, which may be attributed to the electrostatic attraction between the negatively charged BSA and positively charged LYS molecules. Unlike a typical single protein system, membrane fouling by BSA-LYS mixture was only weakly dependent on solution pH within this pH range, and increased ionic strength was found to enhance the membrane flux as a result of the suppressed BSA-LYS electrostatic attraction. Membrane fouling was likely controlled by foulant-fouled-membrane interaction under severe fouling conditions (elevated flux level and unfavorable solution chemistry that promotes fouling), whereas it was likely dominated by foulant-clean-membrane interaction under mild fouling conditions. Compared to nonporous NF and RO membranes, the porous UF membrane was more susceptible to dramatic flux decline due to the increased risk of membrane pore plugging. This study reveals that membrane fouling by mixed macromolecules may behave very differently from that by typical single foulant system, especially when the inter-foulant-species interaction dominates over the intra-species interaction in the mixed foulant system. © 2011 American Chemical Society. |
Persistent Identifier | http://hdl.handle.net/10722/185405 |
ISSN | 2023 Impact Factor: 10.8 2023 SCImago Journal Rankings: 3.516 |
ISI Accession Number ID | |
References |
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Wang, YN | en_US |
dc.contributor.author | Tang, CY | en_US |
dc.date.accessioned | 2013-07-30T07:32:19Z | - |
dc.date.available | 2013-07-30T07:32:19Z | - |
dc.date.issued | 2011 | en_US |
dc.identifier.citation | Environmental Science And Technology, 2011, v. 45 n. 15, p. 6373-6379 | en_US |
dc.identifier.issn | 0013-936X | en_US |
dc.identifier.uri | http://hdl.handle.net/10722/185405 | - |
dc.description.abstract | Protein fouling of nanofiltration (NF), reverse osmosis (RO), and ultrafiltration (UF) membranes by bovine serum albumin (BSA), lysozyme (LYS), and their mixture was investigated under cross-flow conditions. The effect of solution chemistry, membrane properties, and permeate flux level was systematically studied. When the solution pH was within the isoelectric points (IEPs) of the two proteins (i.e., pH 4.7-10.4), the mixed protein system experienced more severe flux decline compared to the respective single protein systems, which may be attributed to the electrostatic attraction between the negatively charged BSA and positively charged LYS molecules. Unlike a typical single protein system, membrane fouling by BSA-LYS mixture was only weakly dependent on solution pH within this pH range, and increased ionic strength was found to enhance the membrane flux as a result of the suppressed BSA-LYS electrostatic attraction. Membrane fouling was likely controlled by foulant-fouled-membrane interaction under severe fouling conditions (elevated flux level and unfavorable solution chemistry that promotes fouling), whereas it was likely dominated by foulant-clean-membrane interaction under mild fouling conditions. Compared to nonporous NF and RO membranes, the porous UF membrane was more susceptible to dramatic flux decline due to the increased risk of membrane pore plugging. This study reveals that membrane fouling by mixed macromolecules may behave very differently from that by typical single foulant system, especially when the inter-foulant-species interaction dominates over the intra-species interaction in the mixed foulant system. © 2011 American Chemical Society. | en_US |
dc.language | eng | en_US |
dc.publisher | American Chemical Society. The Journal's web site is located at http://pubs.acs.org/est | en_US |
dc.relation.ispartof | Environmental Science and Technology | en_US |
dc.subject.mesh | Animals | en_US |
dc.subject.mesh | Biofouling | en_US |
dc.subject.mesh | Cattle | en_US |
dc.subject.mesh | Hydrogen-Ion Concentration | en_US |
dc.subject.mesh | Membranes, Artificial | en_US |
dc.subject.mesh | Muramidase - Chemistry | en_US |
dc.subject.mesh | Nanotechnology - Methods | en_US |
dc.subject.mesh | Osmolar Concentration | en_US |
dc.subject.mesh | Osmosis | en_US |
dc.subject.mesh | Serum Albumin, Bovine - Chemistry | en_US |
dc.subject.mesh | Solutions | en_US |
dc.subject.mesh | Ultrafiltration - Methods | en_US |
dc.title | Fouling of nanofiltration, reverse osmosis, and ultrafiltration membranes by protein mixtures: The role of inter-foulant-species interaction | en_US |
dc.type | Article | en_US |
dc.identifier.email | Tang, CY: tangc@hku.hk | en_US |
dc.identifier.authority | Tang, CY=rp01765 | en_US |
dc.description.nature | link_to_subscribed_fulltext | en_US |
dc.identifier.doi | 10.1021/es2013177 | en_US |
dc.identifier.pmid | 21678956 | - |
dc.identifier.scopus | eid_2-s2.0-79960951457 | en_US |
dc.relation.references | http://www.scopus.com/mlt/select.url?eid=2-s2.0-79960951457&selection=ref&src=s&origin=recordpage | en_US |
dc.identifier.volume | 45 | en_US |
dc.identifier.issue | 15 | en_US |
dc.identifier.spage | 6373 | en_US |
dc.identifier.epage | 6379 | en_US |
dc.identifier.isi | WOS:000293196400028 | - |
dc.publisher.place | United States | en_US |
dc.identifier.scopusauthorid | Wang, YN=35076853300 | en_US |
dc.identifier.scopusauthorid | Tang, CY=35489259800 | en_US |
dc.identifier.issnl | 0013-936X | - |