Engineered polyethersulfone membrane for well-dispersed silver nanoparticle impregnation at high loading: high water permeate flux and biofouling prevention

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...

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Autores principales:	Mohana Mukherjee, Rajdip Bandyopadhyaya
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	flux recovery leaching water permeability membrane biofouling silver nanoparticle surface modification Environmental technology. Sanitary engineering TD1-1066
Acceso en línea:	https://doaj.org/article/5f875d4ef2db41e0ba5024fbeddf831a
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spelling	oai:doaj.org-article:5f875d4ef2db41e0ba5024fbeddf831a2021-11-06T11:11:33ZEngineered polyethersulfone membrane for well-dispersed silver nanoparticle impregnation at high loading: high water permeate flux and biofouling prevention0273-12231996-973210.2166/wst.2021.218https://doaj.org/article/5f875d4ef2db41e0ba5024fbeddf831a2021-07-01T00:00:00Zhttp://wst.iwaponline.com/content/84/1/27https://doaj.org/toc/0273-1223https://doaj.org/toc/1996-9732We 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. Highlights Surface modification of PES help silver nanoparticle impregnation on the surface.; Higher silver loading (9.4 wt%) achieved through surface modification.; Water permeability decreased for surface unmodified silver loaded membrane.; Surface modified silver impregnated membrane shows better biofouling prevention.; Silver leaching is within limit by surface modification than without modification.;Mohana MukherjeeRajdip BandyopadhyayaIWA Publishingarticleflux recoveryleachingwater permeabilitymembrane biofoulingsilver nanoparticlesurface modificationEnvironmental technology. Sanitary engineeringTD1-1066ENWater Science and Technology, Vol 84, Iss 1, Pp 27-42 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	flux recovery leaching water permeability membrane biofouling silver nanoparticle surface modification Environmental technology. Sanitary engineering TD1-1066
spellingShingle	flux recovery leaching water permeability membrane biofouling silver nanoparticle surface modification Environmental technology. Sanitary engineering TD1-1066 Mohana Mukherjee Rajdip Bandyopadhyaya Engineered polyethersulfone membrane for well-dispersed silver nanoparticle impregnation at high loading: high water permeate flux and biofouling prevention
description	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. Highlights Surface modification of PES help silver nanoparticle impregnation on the surface.; Higher silver loading (9.4 wt%) achieved through surface modification.; Water permeability decreased for surface unmodified silver loaded membrane.; Surface modified silver impregnated membrane shows better biofouling prevention.; Silver leaching is within limit by surface modification than without modification.;
format	article
author	Mohana Mukherjee Rajdip Bandyopadhyaya
author_facet	Mohana Mukherjee Rajdip Bandyopadhyaya
author_sort	Mohana Mukherjee
title	Engineered polyethersulfone membrane for well-dispersed silver nanoparticle impregnation at high loading: high water permeate flux and biofouling prevention
title_short	Engineered polyethersulfone membrane for well-dispersed silver nanoparticle impregnation at high loading: high water permeate flux and biofouling prevention
title_full	Engineered polyethersulfone membrane for well-dispersed silver nanoparticle impregnation at high loading: high water permeate flux and biofouling prevention
title_fullStr	Engineered polyethersulfone membrane for well-dispersed silver nanoparticle impregnation at high loading: high water permeate flux and biofouling prevention
title_full_unstemmed	Engineered polyethersulfone membrane for well-dispersed silver nanoparticle impregnation at high loading: high water permeate flux and biofouling prevention
title_sort	engineered polyethersulfone membrane for well-dispersed silver nanoparticle impregnation at high loading: high water permeate flux and biofouling prevention
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/5f875d4ef2db41e0ba5024fbeddf831a
work_keys_str_mv	AT mohanamukherjee engineeredpolyethersulfonemembraneforwelldispersedsilvernanoparticleimpregnationathighloadinghighwaterpermeatefluxandbiofoulingprevention AT rajdipbandyopadhyaya engineeredpolyethersulfonemembraneforwelldispersedsilvernanoparticleimpregnationathighloadinghighwaterpermeatefluxandbiofoulingprevention
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Engineered polyethersulfone membrane for well-dispersed silver nanoparticle impregnation at high loading: high water permeate flux and biofouling prevention

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