期刊
SEPARATION AND PURIFICATION TECHNOLOGY
卷 279, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.seppur.2021.119755
关键词
ZIF-67; PVDF; Sulfate radical; Mixed-matrix membranes; Antifouling
资金
- Key Research and Development Projects of Anhui Province [201904a07020083]
- Natural Science Foundation of Anhui Province [2108085ME188, 2008085QE257]
The ZIF-67@PVDF mixed matrix UF membrane demonstrated efficient removal of dye wastewater via sulfate radical enhancement, showing great potential for treating dye wastewater with high removal efficiency even at high pH conditions.
Efficient separation and excellent antifouling performance of ultrafiltration (UF) membrane are highly desirable for sustainable wastewater treatment. This work reports a novel ZIF-67-imbedded PVDF (ZIF-67@PVDF) mixed matrix UF membrane fabricated by nonsolvent-induced phase separation (NIPS) technique to reinforce efficient removal of dye wastewater via sulfate radical enhancement. The imbedded ZIF-67 well-dispersed within the membrane improved the membrane pore structure and benefited peroxymonosulfate (PMS) activation to generate sulfate radical that were confirmed by Electron spin resonance (ESR) spectroscopy. As a synergistic effect of pore structure and sulfate radical generation, the separation, antifouling and catalytic performance of the ZIF-67@PVDF membranes were greatly enhanced over a wide pH range. Even at a high pH of 11, the PMS online cleaning assisted ZIF-67@PVDF-1.0 membrane achieved high dye removal efficiency for orange II (AO7, 97.3%), Methylene blue (98.2%), Rhodamine B (90.5%). The ZIF-67@PVDF membrane also showed good reusability and stability. This work demonstrates great potential of using self-cleaning UF membranes to treat dye wastewater.
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