Investigation of Anti-fouling and UV-Cleaning Properties of PVDF/TiO2 Mixed-Matrix Membrane for Humic Acid Removal

被引：37
作者：
Teow, Yeit Haan [1 ,2 ]
Ooi, Boon Seng [3 ]
Ahmad, Abdul Latif [3 ]
Lim, Jit Kang [3 ]
机构：
[1] Univ Kebangsaan Malaysia, Dept Chem & Proc Engn, Fac Engn & Built Environm, Bangi 43600, Selangor Darul, Malaysia
[2] Univ Kebangsaan Malaysia, Res Ctr Sustainable Proc Technol CESPRO, Fac Engn & Built Environm, Bangi 43600, Selangor Darul, Malaysia
[3] Univ Sains Malaysia, Sch Chem Engn, Engn Campus, Nibong Tebal 14300, Penang, Malaysia
来源：
MEMBRANES | 2021年 / 11卷 / 01期
关键词：
PVDF membrane; humic acid; TiO2; nanoparticles; fouling mitigation; UV cleaning;
D O I：
10.3390/membranes11010016
中图分类号：
Q5 [生物化学]; Q7 [分子生物学];
学科分类号：
071010 ; 081704 ;
摘要：
Natural organic matters (NOMs) have been found to be the major foulant in the application of ultrafiltration (UF) for treating surface water. Against this background, although hydrophilicity has been demonstrated to aid fouling mitigation, other parameters such as membrane surface morphology may contribute equally to improved fouling resistance. In this work, with humic acid solution as the model substance, the effects of titanium dioxides (TiO2) types (PC-20, P25, and X500) on membrane anti-fouling and defouling properties were comparatively analysed. The aims are (1) to determine the correlation between membrane surface morphology and membrane fouling and (2) to investigate the anti-fouling and UV-cleaning abilities of PVDF/TiO2 mixed-matrix membranes with different membrane topographies and surface energy conditions. The mixed-matrix membrane with P25 TiO2 exhibited the most significant UV-defouling ability, with a high irreversible flux recovery ratio (IFRR(UV)) of 16.56 after 6 h of UV irradiation, whereas that with X500 TiO2 exhibited both superior anti-fouling and defouling properties due to its smoother surface and its highly reactive surface layer.
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页码：1 / 22
页数：22
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