THE DEGRADATION OF METHYLENE BLUE OVER M2TiO4 SPINEL PHOTOCATALYST
Keywords:
Photocatalysis, Coprecipitation, AOP, cobalt titanium oxide, methylene blue, CharacterizationAbstract
Heterogeneous photocatalysis is an advanced oxidation process (AOP) which has been widely studied by numerous researchers in the world and is used to degrade or remove a wide range of pollutants in water and air. In this study, the photocatalytic oxidation and mineralization of methylene blue in aqueous catalyst suspensions of coprecipitated cobalt titanium oxide has been carried out in a helical reactor. The photodegradation was investigated using two kinds of irradiation lamps one emitting at 254 nm and the other emitting at 365 nm. Results showed that photodegradation is an effective method for the removal of MB from wastewaters. The efficiency of the process depends strongly on the experimental conditions of synthesis. We observed that 40 % of pollutant was degraded after 3 hours of UV irradiation.
Downloads
References
. B. Ismail, S. T. Hussain, S. Akram, Chemical Engineering Journal 219 (2013) 395–402.
.Characterization of Semiconductor Heterostructures and Nanostructures. Carlo Lamberti (editor), ELSEVIER, 2008.
. S.N. Basahel, I.H. Abd El-Maksod, B.M. Abu-Zied, M. Mokhtar, Journal of Alloys and Compounds 493 (2010) 630-635.
. N.A. Laoufi, D. Tassalit, F. Bentahar, Global NEST Journal 10 (2008) 404-418.
. Y. Brik, M. Kacimi, M. Ziad, F. Bozon- Verduraz, Journal of catalysis 202 (2001 118-128.
. J. Popović, E. Tkalčec, B. Gržeta, S. Kurajila, B. Rakvin, American Mineralogist 94 (2009 771-776.
. R. A. Nyquist, C.L. Putzig, M. A. Leugers « Hand Book of Infrared and Raman spectra of inorganic compounds and organic salt », Academic Press, 1997.
. J. Preudhomme, P. Tarte, Spectrochimica Acta 26A (1970 2207-2215.
. V.A.M. Brabers, Physical Status Solidi A 12 (1972) 629-636.
