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231225s2021 xx |||||o 00| ||eng c |
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|a 10.2166/wst.2021.218
|2 doi
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|a pubmed25n1093.xml
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|a eng
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|a Mukherjee, Mohana
|e verfasserin
|4 aut
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|a Engineered polyethersulfone membrane for well-dispersed silver nanoparticle impregnation at high loading
|b high water permeate flux and biofouling prevention
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|c 2021
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Completed 21.07.2021
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|a Date Revised 21.07.2021
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|a published: Print
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|a Citation Status MEDLINE
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|a We present a new method for impregnation of silver nanoparticles (Ag NPs) at high loading on polyethersulfone (PES) membrane's external surface, simultaneously retaining native membrane's porosity - to achieve a high water permeate flux without biofouling. This was possible by PES membrane's surface modification with acrylic acid (AA), finally leading to AA-Ag-PES membrane. AA-Ag-PES had a high (9.04%) Ag-NP loading selectively on membrane surface, as discrete, smaller (mean size: 20 nm) nanoparticles (NPs). In nonfunctionalized Ag-PES, aggregated (mean size: 70 nm) NPs, with lower Ag loading (0.73 wt.%) was obtained, with NP being present both on membrane surface and inside pores. Consequently, AA-Ag-PES could maintain similar water permeability and porosity (10,153.05 Lm-2 h-1bar-1 and 69.98%, respectively), as in native PES (11,368.74 Lm-2 h-1bar-1 and 68.86%, respectively); whereas both parameters dropped significantly for Ag-PES (4,869.66 Lm-2 h-1bar-1 and 49.02%, respectively). AA-Ag-PES also showed least flux reduction (7.7%) due to its anti-biofouling property and high flux recovery after usage and cleaning, compared to native PES and Ag-PES membrane's much higher flux reduction (54.29% and 36.7%, respectively). Hence, discrete NP impregnation, avoiding pore blockage, is key for achieving high water flux and anti-biofouling properties (in AA-Ag-PES), compared to non-functionalized Ag-PES, due to aggregated Ag-NPs inside its pores
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|a Journal Article
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|a Membranes, Artificial
|2 NLM
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|a Polymers
|2 NLM
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|a Sulfones
|2 NLM
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|a Water
|2 NLM
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|a 059QF0KO0R
|2 NLM
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|a polyether sulfone
|2 NLM
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| 650 |
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|a 25667-42-9
|2 NLM
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| 650 |
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|a Silver
|2 NLM
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| 650 |
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|a 3M4G523W1G
|2 NLM
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|a Bandyopadhyaya, Rajdip
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Water science and technology : a journal of the International Association on Water Pollution Research
|d 1986
|g 84(2021), 1 vom: 19. Juli, Seite 27-42
|w (DE-627)NLM098149431
|x 0273-1223
|7 nnas
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| 773 |
1 |
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|g volume:84
|g year:2021
|g number:1
|g day:19
|g month:07
|g pages:27-42
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|u http://dx.doi.org/10.2166/wst.2021.218
|3 Volltext
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|h 27-42
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