期刊
WATER SCIENCE AND TECHNOLOGY
卷 79, 期 9, 页码 1821-1832出版社
IWA PUBLISHING
DOI: 10.2166/wst.2019.182
关键词
antibacterial; antibiofouling; capsaicin derivatives; surface modification; ultrafiltration membrane; UV-assisted grafting
资金
- National Natural Science Foundation of China [21576250]
- Public Science and Technology Research Funds Projects of Ocean [201505021]
- Yantai '13th Five-Year Plan' Marine Economy Innovation Demonstration Project [YHCX-HS-L-201707]
- Young Taishan Scholars Program of Shandong Province
- Special Fund for Basic Scientific Research Business of Central Public Research Institutes [K-JBYWF-2016-T14]
Biofouling is a critical issue in the membrane separation process as it can increase the operational cost by lower down membrane permeability. Covalent binding of an antibacterial agent on the membrane surface to kill microorganisms to hinder biofouling formation process draws great attention. In this study, we used three kinds of capsaicin derivatives, MBHBA, HMBA, and HMOBA, to fabricate antibiofouling membrane via UV-assisted photo grafting method. The influence of these capsaicin derivatives on membrane properties was investigated and compared. The results suggest that HMBA showed the best UV activity, followed by HMOBA and MBHBA successively. Due to the difference of functional groups among capsaicin derivatives, there is an increase in membrane wettability of HMBA and HMOBA-modified membranes, while there is a decrease for MBHBA-modified membrane. MBHBA-modified membrane showed enhanced irreversible fouling, which is in contrast to that of HMBA- and HMOBA-modified membranes. The modified membranes showed similar antibacterial activity against Escherichia coli. The practicability of the modified membranes was examined by dipping them into tap water and seawater for 30 days, and the results displayed the modified surfaces have the potential to relieve biofouling for separation membranes.
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