D-Tyrosine loaded nanocomposite membranes for environmental-friendly, long-term biofouling control

WATER RESEARCH

卷:130

Article

Yu, Cong¹  Wu, Jinjian¹  Zin, Gilherme²  Di Luccio, Marco²  Wen, Donghui³  Li, Qilin^1,4,5,6,7 

[1] Rice Univ, Dept Civil & Environm Engn, Houston, TX 77005 USA

[2] Univ Fed Santa Catarina, Dept Chem & Food Engn, BR-88040970 Florianopolis, SC, Brazil

[3] Peking Univ, Coll Environm Sci & Engn, Beijing 100871, Peoples R China

[4] Rice Univ, Dept Chem & Biomol Engn, Houston, TX 77005 USA

[5] Rice Univ, Dept Mat Sci & Nanoengn, Houston, TX 77005 USA

[6] Rice Univ, NSF Nanosyst Engn Res Ctr Nanotechnol Enabled Wat, Houston, TX 77005 USA

[7] Rice Univ, Smalley Curl Inst, Houston, TX 77005 USA

关键词: Membrane biofouling;    D-tyrosine;    Zeolite;    Slow release;    Nanofiltration;   

DOI  :  10.1016/j.watres.2017.11.037

来源: Elsevier

【 摘 要 】

Strategies to control biofouling without using antimicrobial chemicals are needed to prevent the spread of antibiotic resistance genes and disruption of microbial activities in biological treatment. This study developed an environmentally friendly biofouling resistant membrane by incorporating (D)-tyrosine onto a commercial nanofiltration membrane using FAU type zeolite nanoparticles that covalently bound to the membrane surface as carriers for slow release. The D-tyrosine loaded membrane had similar water permeability as the unmodified membrane, but greatly reduced initial cell attachment and strongly inhibited subsequent biofilm formation without inactivating the bacteria. The membrane slowly released (D)-tyrosine in the time course of over 5 days, and retained its anti-biofouling capability in repeated 24 h efficacy tests for as long as 6 days. In nanofiltration operation, the (D)-tyrosine incorporated zeolite coating completely inhibited cell adhesion on the membrane surface and significantly alleviated membrane flux decline. (C) 2017 Elsevier Ltd. All rights reserved.

【 授权许可】

Free