Journal article
Sonophotocatalytic degradation of monocrotophos using TiO2 and Fe3
J Madhavan, PS Sathish Kumar, S Anandan, F Grieser, M Ashokkumar
Journal of Hazardous Materials | ELSEVIER | Published : 2010
Abstract
Monocrotophos (MCP) is an organophosphate insecticide that has been found as a pollutant in aqueous environments. The sonolytic, photocatalytic and sonophotocatalytic degradation of MCP in the presence of homogeneous (Fe3+) and heterogeneous photocatalysts (TiO2) were studied. The photocatalytic degradation rate using TiO2 was found to be lower than that of sonolysis alone due to the interference of phosphate ions formed as an intermediate product. On the other hand, a 15 fold enhancement in the degradation rate was found when photolysis was carried out in the presence of Fe3+ compared to the rate observed with photolysis alone. The combination of sonolysis and photocatalysis (using either T..
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Awarded by Department of Science and Technology, Ministry of Science and Technology, India
Funding Acknowledgements
The authors thank DIISR, Australia and DST, New Delhi for the financial support from India-Australian strategic research fund (INT/AUS/P-1/07 dated 19 September 2007). The authors thank Prof. T. Swaminathan for the supply of monocrotophos.