期刊
MEMBRANES
卷 12, 期 5, 页码 -出版社
MDPI
DOI: 10.3390/membranes12050486
关键词
membrane fouling; mixed matrix membranes; D-amino acid; graphene oxide (GO); biofouling control
类别
资金
- National Natural Science Foundation of China [51478015]
In this study, hydrophilic polyvinylidene fluoride (PVDF) nanocomposite membranes (P-GO-DAA) with antifouling and anti-biofouling characteristics were successfully fabricated by incorporating graphene oxide (GO) and different concentrations of D-Tyrosine. The nanocomposite membranes showed improved resistance to fouling and biofouling, making them suitable for ultrafiltration and bacterial adhesion experiments.
Membrane fouling markedly influences the service life and performance of the membrane during the using process. Herein, hydrophilic polyvinylidene fluoride (PVDF) nanocomposite (P-GO-DAA) membranes with antifouling and anti-biofouling characteristics were fabricated by employing graphene oxide (GO) and different concentrations of D-Tyrosine. The structural properties of the prepared nanocomposite membranes as well as pure PVDF membranes were characterized using FTIR, XPS, SEM, AFM, and contact angle analysis. It was found that the introduction of GO fillers made an excellent antifouling performance compared to pure PVDF indicated by the pure water flux, flux recovery rate, and rejection rate during ultrafiltration experiments as a result of the formation of the hydrophilic and more porous membrane. In particular, the nanocomposite membranes showed an increased flux of 305.27 L/(m(2)center dot h) and the rejection of 93.40% for the mixed pollutants solution (including Bull Serum Albumin, Sodium Alginate, and Humic Acid). Besides, the outstanding anti-biofouling activity was shown by the P-GO-DAA membrane with the properties of D-Tyrosine for inhibiting biofilm formation during the bacterial adhesion experiments. Furthermore, the adhesion ratio of bacteria on the membrane was 26.64% of the P-GO-DAA membrane compared to 84.22% of pure PVDF. These results were confirmed by CLSM.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据