Sodium Chloroacetate Modified Polyethyleneimine/Trimesic Acid Nanofiltration Membrane to Improve Antifouling Performance
Nanofiltration (NF) is a separation technology with broad application prospects. Membrane fouling is an important bottleneck-restricting technology development. In the past, we prepared a positively charged polyethyleneimine/trimesic acid (PEI/TMA) NF membrane with excellent performance. Inevitably,...
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2021-09-01
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doaj-935364887b97408285c188c2a421a4cc2021-09-26T00:40:28ZengMDPI AGMembranes2077-03752021-09-011170570510.3390/membranes11090705Sodium Chloroacetate Modified Polyethyleneimine/Trimesic Acid Nanofiltration Membrane to Improve Antifouling PerformanceKaifeng Gu0Sichen Pang1Yong Zhou2Congjie Gao3Center for Membrane and Water Science & Technology, Zhejiang University of Technology, Hangzhou 310014, ChinaCenter for Membrane and Water Science & Technology, Zhejiang University of Technology, Hangzhou 310014, ChinaCenter for Membrane and Water Science & Technology, Zhejiang University of Technology, Hangzhou 310014, ChinaCenter for Membrane and Water Science & Technology, Zhejiang University of Technology, Hangzhou 310014, ChinaNanofiltration (NF) is a separation technology with broad application prospects. Membrane fouling is an important bottleneck-restricting technology development. In the past, we prepared a positively charged polyethyleneimine/trimesic acid (PEI/TMA) NF membrane with excellent performance. Inevitably, it also faces poor resistance to protein contamination. Improving the antifouling ability of the PEI/TMA membrane can be achieved by considering the hydrophilicity and chargeability of the membrane surface. In this work, sodium chloroacetate (ClCH<sub>2</sub>COONa) is used as a modifier and is grafted onto the membrane surface. Additionally, 0.5% ClCH<sub>2</sub>COONa and 10 h modification time are the best conditions. Compared with the original membrane (M0, 17.2 L m<sup>−2</sup> h<sup>−1</sup>), the initial flux of the modified membrane (M0-e, 30 L m<sup>−2</sup> h<sup>−1</sup>) was effectively increased. After filtering the bovine albumin (BSA) solution, the original membrane flux dropped by 47% and the modified membrane dropped by 6.2%. The modification greatly improved the antipollution performance of the PEI/TMA membrane.https://www.mdpi.com/2077-0375/11/9/705nanofiltrationsodium chloroacetatemodificationantipollution performance |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Kaifeng Gu Sichen Pang Yong Zhou Congjie Gao |
spellingShingle |
Kaifeng Gu Sichen Pang Yong Zhou Congjie Gao Sodium Chloroacetate Modified Polyethyleneimine/Trimesic Acid Nanofiltration Membrane to Improve Antifouling Performance Membranes nanofiltration sodium chloroacetate modification antipollution performance |
author_facet |
Kaifeng Gu Sichen Pang Yong Zhou Congjie Gao |
author_sort |
Kaifeng Gu |
title |
Sodium Chloroacetate Modified Polyethyleneimine/Trimesic Acid Nanofiltration Membrane to Improve Antifouling Performance |
title_short |
Sodium Chloroacetate Modified Polyethyleneimine/Trimesic Acid Nanofiltration Membrane to Improve Antifouling Performance |
title_full |
Sodium Chloroacetate Modified Polyethyleneimine/Trimesic Acid Nanofiltration Membrane to Improve Antifouling Performance |
title_fullStr |
Sodium Chloroacetate Modified Polyethyleneimine/Trimesic Acid Nanofiltration Membrane to Improve Antifouling Performance |
title_full_unstemmed |
Sodium Chloroacetate Modified Polyethyleneimine/Trimesic Acid Nanofiltration Membrane to Improve Antifouling Performance |
title_sort |
sodium chloroacetate modified polyethyleneimine/trimesic acid nanofiltration membrane to improve antifouling performance |
publisher |
MDPI AG |
series |
Membranes |
issn |
2077-0375 |
publishDate |
2021-09-01 |
description |
Nanofiltration (NF) is a separation technology with broad application prospects. Membrane fouling is an important bottleneck-restricting technology development. In the past, we prepared a positively charged polyethyleneimine/trimesic acid (PEI/TMA) NF membrane with excellent performance. Inevitably, it also faces poor resistance to protein contamination. Improving the antifouling ability of the PEI/TMA membrane can be achieved by considering the hydrophilicity and chargeability of the membrane surface. In this work, sodium chloroacetate (ClCH<sub>2</sub>COONa) is used as a modifier and is grafted onto the membrane surface. Additionally, 0.5% ClCH<sub>2</sub>COONa and 10 h modification time are the best conditions. Compared with the original membrane (M0, 17.2 L m<sup>−2</sup> h<sup>−1</sup>), the initial flux of the modified membrane (M0-e, 30 L m<sup>−2</sup> h<sup>−1</sup>) was effectively increased. After filtering the bovine albumin (BSA) solution, the original membrane flux dropped by 47% and the modified membrane dropped by 6.2%. The modification greatly improved the antipollution performance of the PEI/TMA membrane. |
topic |
nanofiltration sodium chloroacetate modification antipollution performance |
url |
https://www.mdpi.com/2077-0375/11/9/705 |
work_keys_str_mv |
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