Mitigating Silica Fouling and Improving PPCP Removal by Modified NF90 Using In Situ Radical Graft Polymerization

This study in-situ modified a commercial nanofiltration membrane, NF90, through the concentration-polymerization-enhanced radical graft polarization method by applying two agents of 3-sulfopropyl methacrylate potassium salt (SPM) and 2-hydroxyethyl methacrylate (HEMA) with different dosages. Surface...

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Autores principales:	Yi-Li Lin, Nai-Yun Zheng, Hao-Yu Gan, An-Xian Chang, Huai-Xuan Luo, Yao-Jie Mao
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	in situ membrane modification nanofiltration fouling mitigation pharmaceutical and personal care products (PPCPs) fouling mechanism Chemical technology TP1-1185 Chemical engineering TP155-156
Acceso en línea:	https://doaj.org/article/c661a6f5b5a34fed8aa325968125293e
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spelling	oai:doaj.org-article:c661a6f5b5a34fed8aa325968125293e2021-11-25T18:20:17ZMitigating Silica Fouling and Improving PPCP Removal by Modified NF90 Using In Situ Radical Graft Polymerization10.3390/membranes111109042077-0375https://doaj.org/article/c661a6f5b5a34fed8aa325968125293e2021-11-01T00:00:00Zhttps://www.mdpi.com/2077-0375/11/11/904https://doaj.org/toc/2077-0375This study in-situ modified a commercial nanofiltration membrane, NF90, through the concentration-polymerization-enhanced radical graft polarization method by applying two agents of 3-sulfopropyl methacrylate potassium salt (SPM) and 2-hydroxyethyl methacrylate (HEMA) with different dosages. Surface characterization revealed that the modified membranes became rougher and more hydrophilic compared with the pristine membrane. The modified membranes exhibited considerably enhanced separation performance with 5.8–19.6% higher NaCl rejection and 17.2–19.9% higher pharmaceuticals and personal care products (PPCPs) rejection than the pristine membrane. When treating the feedwater with high silica concentration, the modified membranes exhibited relatively less flux decline with high percentage of reversible fouling, especially the ones modified using a lower monomer concentration (0.01 M SPM and 0.01 M HEMA). Moreover, membrane modification enhanced the PPCP rejection (1.3–5.4%) after silica fouling by mitigating foulant deposition on the membrane surface. The fouling mechanism was confirmed to be intermediate blocking of membrane pores. Therefore, the in-situ modification technique with a low monomer concentration proved to be effective for mitigating silica fouling and improving PPCP rejection, which can be easily performed and cost-effective in practical application.Yi-Li LinNai-Yun ZhengHao-Yu GanAn-Xian ChangHuai-Xuan LuoYao-Jie MaoMDPI AGarticlein situ membrane modificationnanofiltrationfouling mitigationpharmaceutical and personal care products (PPCPs)fouling mechanismChemical technologyTP1-1185Chemical engineeringTP155-156ENMembranes, Vol 11, Iss 904, p 904 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	in situ membrane modification nanofiltration fouling mitigation pharmaceutical and personal care products (PPCPs) fouling mechanism Chemical technology TP1-1185 Chemical engineering TP155-156
spellingShingle	in situ membrane modification nanofiltration fouling mitigation pharmaceutical and personal care products (PPCPs) fouling mechanism Chemical technology TP1-1185 Chemical engineering TP155-156 Yi-Li Lin Nai-Yun Zheng Hao-Yu Gan An-Xian Chang Huai-Xuan Luo Yao-Jie Mao Mitigating Silica Fouling and Improving PPCP Removal by Modified NF90 Using In Situ Radical Graft Polymerization
description	This study in-situ modified a commercial nanofiltration membrane, NF90, through the concentration-polymerization-enhanced radical graft polarization method by applying two agents of 3-sulfopropyl methacrylate potassium salt (SPM) and 2-hydroxyethyl methacrylate (HEMA) with different dosages. Surface characterization revealed that the modified membranes became rougher and more hydrophilic compared with the pristine membrane. The modified membranes exhibited considerably enhanced separation performance with 5.8–19.6% higher NaCl rejection and 17.2–19.9% higher pharmaceuticals and personal care products (PPCPs) rejection than the pristine membrane. When treating the feedwater with high silica concentration, the modified membranes exhibited relatively less flux decline with high percentage of reversible fouling, especially the ones modified using a lower monomer concentration (0.01 M SPM and 0.01 M HEMA). Moreover, membrane modification enhanced the PPCP rejection (1.3–5.4%) after silica fouling by mitigating foulant deposition on the membrane surface. The fouling mechanism was confirmed to be intermediate blocking of membrane pores. Therefore, the in-situ modification technique with a low monomer concentration proved to be effective for mitigating silica fouling and improving PPCP rejection, which can be easily performed and cost-effective in practical application.
format	article
author	Yi-Li Lin Nai-Yun Zheng Hao-Yu Gan An-Xian Chang Huai-Xuan Luo Yao-Jie Mao
author_facet	Yi-Li Lin Nai-Yun Zheng Hao-Yu Gan An-Xian Chang Huai-Xuan Luo Yao-Jie Mao
author_sort	Yi-Li Lin
title	Mitigating Silica Fouling and Improving PPCP Removal by Modified NF90 Using In Situ Radical Graft Polymerization
title_short	Mitigating Silica Fouling and Improving PPCP Removal by Modified NF90 Using In Situ Radical Graft Polymerization
title_full	Mitigating Silica Fouling and Improving PPCP Removal by Modified NF90 Using In Situ Radical Graft Polymerization
title_fullStr	Mitigating Silica Fouling and Improving PPCP Removal by Modified NF90 Using In Situ Radical Graft Polymerization
title_full_unstemmed	Mitigating Silica Fouling and Improving PPCP Removal by Modified NF90 Using In Situ Radical Graft Polymerization
title_sort	mitigating silica fouling and improving ppcp removal by modified nf90 using in situ radical graft polymerization
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/c661a6f5b5a34fed8aa325968125293e
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Mitigating Silica Fouling and Improving PPCP Removal by Modified NF90 Using In Situ Radical Graft Polymerization

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