Titanium dioxide nanofibers integrated stainless steel filter for photocatalytic degradation of pharmaceutical compounds
- Titanium dioxide nanofibers integrated stainless steel filter for photocatalytic degradation of pharmaceutical compounds
- Subramaniya Pillai Ramasundara; 유하나; 송경근; 이재상; 최경진; 홍석원
- Electrospinning; Pharmaceutical pollutants; Photocatalytic filter; Poly(vinylidene fluoride); TiO2 nanofibers
- Issue Date
- Journal of hazardous materials
- VOL 258-259, 124-132
- 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.
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