Abstract
In this research, the degradation of Dazomet has been studied by using thermal Fenton process and photo-Fenton processes under UV and lights sun. The optimum values of amounts of the Fenton reagents have been determined (0.07g FeSO4.7H2O, 3.5μl H2O2) at 25 °C and at pH 7 where the degradation percentages of Dazomet were recorded high. It has been found that solar photo Fenton process was more effective in degradation of Dazomet than photo-Fenton under UV-light and thermal Fenton processes, the percentage of degradation of Dazomet by photo-Fenton under sun light are88% and 100% at 249 nm and 281 nm respectively, while the percentages of degradation for photo-Fenton under UV-light are 87%, 96% and for thermal Fenton are 70% and 66.8% at 249 nm and 281 nm respectively.In this research the effect of temperature on all the reactions has been studied in the range 25°C-45°C, it has been noticed that the reaction rate constant (k) has increased with increasing temperature, and the best percentage degradation of Dazomet was at 45°C in all processes, so, the thermodynamic functions ΔG*, ΔH*, ΔS*have been calculated.
Keywords
Fenton processes, Dazomet degradation, photocatalysts, Photodegradation of Pesticides.
Article Type
Article
How to Cite this Article
Mohammed, Eman A. and Mousa, Souad A.
(2018)
"Degradation of Dazomet by Thermal Fenton and Photo-Fenton Processes under UV and Sun lights at Different Temperatures,"
Baghdad Science Journal: Vol. 15:
Iss.
2, Article 7.
DOI: https://doi.org/10.21123/bsj.2018.15.2.0158
