Hydrophilic SiC hollow fiber membranes for low fouling separation of oil-in-water emulsions with high flux

The dry-wetting spinning technique involving immersion-induced phase inversion and dry-sintering was applied to prepare two types of SiC and Al O hollow fiber membranes. The two hollow fiber membranes were characterized in terms of morphology and chemical surface composition by scanning electron mic...

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Veröffentlicht in:RSC advances 2020-01, Vol.10 (8), p.4832-4839
Hauptverfasser: Xu, Man, Xu, Chenxi, Rakesh, K P, Cui, Yuge, Yin, Jun, Chen, Changlian, Wang, Shulin, Chen, Bingcai, Zhu, Li
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Sprache:eng
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Zusammenfassung:The dry-wetting spinning technique involving immersion-induced phase inversion and dry-sintering was applied to prepare two types of SiC and Al O hollow fiber membranes. The two hollow fiber membranes were characterized in terms of morphology and chemical surface composition by scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), water contact angle and zeta potential measurements. The filtration capabilities of the two hollow fiber membranes were assessed by the separation of 200 mg L synthetic (O/W) emulsions. During the treatment of O/W emulsions, the permeation flux of the SiC hollow fiber membrane was 163.9 L h m , which was higher than that of the Al O hollow fiber membrane (139.4 L h m ) at the beginning of the experiment. The membrane surface properties and the filtration results of O/W emulsion microfiltration demonstrated that the SiC hollow fiber membranes with a higher hydrophilicity had higher water flux and better anti-fouling properties.
ISSN:2046-2069
2046-2069
DOI:10.1039/c9ra06695k