Amir Mirshafiee 1,2 , Mohammad Darvish 1 Show Affiliations »
Abstract
PURPOSE: The 2, 4, 6-trinitrotoluene (TNT) is the major explosive extensively applied in demolition of structure, military activity, and mining industry. This research was investigating the degradation rate of TNT in aqueous solution using electrochemical combined with persulfate anions. METHODS: In this study, the effect of seven independent variables including pH, reaction time, current density, type (NaCl, Na2SO4, NaNO3) and concentration of salts, initial concentration of TNT, scavenger type, and persulfate concentration were studied on TNT removal. High performance liquid chromatography (HPLC) was applied to measure TNT concentration. RESULTS: The findings indicated that the optimum conditions for TNT reduction were pH = 5, time = 45 min, current density = 1.75 mA/cm2, initial concentration of TNT = 25 mg/l, persulfate concentration = 0.3 mg/l, and Na2SO4 concentration = 1.75 mg/l which the removal rate of TNT was found to be 88.0 ± 4.4%. CONCLUSION: According to the findings, electrocoagulation procedure is suggested as an applicable method in TNT reduction from aqueous solution. © Springer Nature Switzerland AG 2021.
PURPOSE: The 2, 4, 6-trinitrotoluene (TNT) is the major explosive extensively applied in demolition of structure, military activity, and mining industry. This research was investigating the degradation rate of TNT in aqueous solution using electrochemical combined with persulfate anions. METHODS: In this study, the effect of seven independent variables including pH, reaction time, current density, type (NaCl, Na2SO4, NaNO3) and concentration of salts, initial concentration of TNT, scavenger type, and persulfate concentration were studied on TNT removal. High performance liquid chromatography (HPLC) was applied to measure TNT concentration. RESULTS: The findings indicated that the optimum conditions for TNT reduction were pH = 5, time = 45 min, current density = 1.75 mA/cm2, initial concentration of TNT = 25 mg/l, persulfate concentration = 0.3 mg/l, and Na2SO4 concentration = 1.75 mg/l which the removal rate of TNT was found to be 88.0 ± 4.4%. CONCLUSION: According to the findings, electrocoagulation procedure is suggested as an applicable method in TNT reduction from aqueous solution. © Springer Nature Switzerland AG 2021.
Entities: Chemical
Keywords:
Electrochemical; Persulfate; Red water; TNT
Year: 2021
PMID： 34150291 PMCID： PMC8172656 DOI： 10.1007/s40201-021-00668-z
Source DB: PubMed Journal: J Environ Health Sci Eng