Photocatalytic Decomposition Of Dimethoate Using Some Selected Metal Oxides Powder | ||
| The International Conference on Chemical and Environmental Engineering | ||
| Article 1, Volume 7, 7th International Conference on Chemical & Environmental Engineering, May 2014, Pages 1-12 PDF (215.99 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/iccee.2014.35399 | ||
| Authors | ||
| M. I. Awaad; M. S. Fayed; M. K. Abd El Magid; A. Baraka | ||
| Egyptian Armed Forces. | ||
| Abstract | ||
| Abstract Dimethoate is an organophosphorous insecticide used to control a variety of insects in agricultural productions. The contamination of water by dimethoate and other organophosphate insecticides represents a great hazard to the humans and animals due to carcinogenic effect and other toxic effects on nerve system. To remove dimethoate contamination from water, photocatalysis has been applied as a powerful method. Powder form of some selected metal oxides such as TiO2, Al2O3, Fe2O3, and MgO were used. Photocatalytic decomposition of dimethoate at different conditions (dimethoate initial concentration, catalyst type and catalyst concentration, temperature, and presence of oxidant) was investigated in a batch reactor. Oxidants such as H2O2, K2S2O8, and (NH4)2S2O8 were used. Amongst the tested oxides, TiO2 achieved the best decomposition efficiency of dimethoate and the decomposition increased as the concentration of TiO2 increased up to 100 mg/l. Addition of H2O2 to reaction system highly enhanced the decomposition process. | ||
| Keywords | ||
| Photocatalytic decomposition; TiO2; Organophosphorous; dimethoate | ||
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