Decomposition of aqueous tetrachloroethylene by Fenton oxidation treatment

摘要: Flask-scale experiments were performed to elucidate the reaction mechanism in which tetrachloroethylene (PCE) water is decomposed by Fenton oxidation treatment. Concentrations of Cl−, total inorganic carbon, and PCE measured during a 24-h period there occurred pseudo first-order (k=0.17 h−1) >95% dechlorination mineralization. Results indicate that: (i) decomposition due compensated throughout experiment increasing Cl− CO2, (ii) mineralization rates derived from increase CO2 are nearly same as Cl−. GC/MS GC/ECD analyses intermediates confirmed presence trichloroacetic acid (TCAA) only. That is, organic compounds such dichloroacetic (DCAA), monochloroacetic acid, acetic formic not detected, having been although no degradation TCAA detected only explained 1% PCE. These findings that proceed almost simultaneously treatment, via DCAA.