Journal
SEPARATION AND PURIFICATION TECHNOLOGY
Volume 249, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.seppur.2020.117159
Keywords
beta-FeOOH; Anti-fouling; Ultrafiltration; photo-Fenton catalytic
Categories
Funding
- China Postdoctoral Science Foundation [2018 M642725]
- National Natural Science Foundation of China [21908247]
- Shandong Province Major Science and Technology Innovation Project [2018CXGC1002]
- Qingdao Science and Technology Plan Project [176319gxx]
- Key Technology Research and Development Program of Shandong [2019JZZY010410]
- Fundamental Research Funds for the Central Universities [18CX05001A]
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Membrane fouling problems severely hindered the integrated development of membrane technology. Currently, construction of a fouling-resistance membrane was an everlasting and ubiquitous research focus. In this study, beta-FeOOH nanorods were anchored onto commercial polysulfone (PSF) ultrafiltration (UF) membranes surface via in-situ mineralization to fabricate an anti-fouling UF membrane for organic and dyes wastewater treatment. The ion-dipole interaction and pi-cation interaction between Fe3+ and PSF chains guaranteed beta-FeOOH nanorods attaching onto the surface without an intermediate layer. A satisfying flux recovery ratio (93.6% and 94.3%) and a low irreversible fouling ratio (6.4% and 5.9%) for bovine albumin (BSA) and sodium alginate (SA) solutions, respectively, were acquired on account of the photo-Fenton catalytic property and hydrophilicity of nanorods without sacrificing the permeation flux sharply. Importantly, the resultant membrane exhibited a desirable separation performance for various dyes solutions, with high permeation flux (53.6-100.0 L.m(-2).h(-1).bar(-1)) and appropriate rejection rates (60.9-92.6%). This work not only improved the anti-organic fouling performance extensively, but also provided a novel insight to decorate the conventional UF membrane surface straightforward without an intermediate layer.
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