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 |
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Format: | Artikel |
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. |
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ISSN: | 2046-2069 2046-2069 |
DOI: | 10.1039/c9ra06695k |