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Title

Optimization and evaluation of the efficiency of sono-Fenton and photo-Fenton processes in the removal of 2, 4, 6 trinitrotoluene (TNT) from aqueous solutions

مجله پیشرفت در تحقیقات بهداشت محیط، دوره: 8، شماره: 1
Year: 1399
COI: JR_JAEHR-8-1_005
Language: EnglishView: 196
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Authors

Majid Hashemi - Environmental Health Engineering, Military Health Department, Aja University of Medical Sciences, Tehran, Iran|Environmental Health Engineering, School of Public Health, Kerman University of Medical Sciences, Kerman, Iran
Nastuna Ghanbari Sagharlo - Environmental Engineering, Military Health Department, Aja University of Medical Sciences, Tehran, Iran

Abstract:

The adverse health effects of trinitrotoluene (TNT) include allergies, liver and blood damage, and carcinogenesis. The present study aimed to optimize the sono-Fenton and photo-Fenton processes for the removal of TNT from aqueous solutions. TNT removal was evaluated at various pH (acidic, neutral, and alkaline), pollutant concentrations (10, 30, 50, 100, and 120 mg/l), H2O2 concentration (10-80 mM), and ferrous ions (0.5-4 Mm). After the optimization of the parameters, the appropriate UV irradiation time and optimal time of ultrasonic waves were determined for the removal of this compound. TNT concentration was measured using high-performance liquid chromatography. Increased hydrogen peroxide from 10 to 40 mMole/l led to higher TNT degradation (45.3% to 88.4% and 40 to 80 mMole/l), while the removal rate decreased from 88.4% to 79%. At the optimal H2O2 concentration, increased pH (3±0.2 to 11±0.2) decreased TNT decomposition from 88.4% to 23.5%. In addition, increased time (5 to 60 minutes) led to the higher photo-Fenton process efficiency (68.6% to 89%). The maximum photo-Fenton efficiency was achieved in optimal conditions at the TNT concentration of 10 mg/L (97%) and 60 minutes, while the efficiency of the sono-Fenton process in optimal conditions was 100% at 20 minutes. Therefore, it was concluded that the sono-Fenton process was effective in the removal of TNT.

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Hashemi, Majid and Ghanbari Sagharlo, Nastuna,1399,Optimization and evaluation of the efficiency of sono-Fenton and photo-Fenton processes in the removal of 2, 4, 6 trinitrotoluene (TNT) from aqueous solutions,https://civilica.com/doc/1030076

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Type of center: علوم پزشکی
Paper count: 2,100
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