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Abstract:
Polypropylene (PP) non-woven fabric was grafted by acrylic acid to enable ligation of ferric ions to the fiber surface so as to produce a Fe modified PP non-woven fabric, and then the resulting fabric was used as heterogeneous Fenton catalyst for the oxidative degradation of an azo dye, Reactive Red 195. The effect of ferric ion content loading on catalyst and visible irradiation on the catalytic activity of the fabric was investigated, and the photocatalytic degradation of Reactive Red 195 was also examined by UV-Vis spectrometry and COD measurement. The results indicated that the modified PP non-woven fabric had a significant catalytic property on oxidative degradation of the dye, and enhancing ferric ion content and visible irradiation led to high decoloration level. UV-Vis spectrometry and COD analysis confirmed that the aromatic parts and conjugated structures of the dye were decomposed and gradually mineralized during its degradation. Additionally, the oxidative degradation of Reactive Red 195 in the presence of Fe modified PP non-woven fabric followed the pseudo-first order kinetics.
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Journal of Tianjin Polytechnic University
ISSN: 1671-024X
CN: 12-1341/TS
Year: 2012
Issue: 3
Volume: 31
Page: 40-43
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