Titanium dioxide nanofibers integrated stainless steel filter for photocatalytic degradation of pharmaceutical compounds

Title
Titanium dioxide nanofibers integrated stainless steel filter for photocatalytic degradation of pharmaceutical compounds
Authors
Subramaniya Pillai Ramasundara유하나송경근이재상최경진홍석원
Keywords
Electrospinning; Pharmaceutical pollutants; Photocatalytic filter; Poly(vinylidene fluoride); TiO2 nanofibers
Issue Date
2013-08
Publisher
Journal of hazardous materials
Citation
VOL 258-259, 124-132
Abstract
tA photocatalytically active stainless steel filter (P-SSF) was prepared by integrating electrospun TiO2nanofibers on SSF surface through a hot-press process where a poly(vinylidene fluoride) (PVDF)nanofibers interlayer acted as a binder. By quantifying the photocatalytic oxidation of cimetidine underultraviolet radiation and assessing the stability of TiO2nanofibers integrated on the P-SSF against son-ication, the optimum thickness of the TiO2and PVDF layer was found to be 29 and 42 μm, respectively.At 10 L/m2h flux, 40–90% of cimetidine was oxidized when the thickness of TiO2layer increased from 10to 29 μm; however, no further increase of cimetidine oxidation was observed as its thickness increasedto 84 μm, maybe due to limited light penetration. At flux conditions of 10, 20, and 50 L/㎡h, the oxi-dation efficiencies for cimetidine were found to be 89, 64, and 47%, respectively. This was attributed toreduced contact time of cimetidine within the TiO2layer. Further, the degradation efficacy of cimetidinewas stably maintained for 72 h at a flux of 10 L/㎡h and a trans-filter pressure of 0.1–0.2 kPa. Overall,our results showed that it can potentially be employed in the treatment of effluents containing organic micropollutants.
URI
http://pubs.kist.re.kr/handle/201004/44953
ISSN
03043894
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KIST Publication > Article
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