Advanced oxidation of pentachlorophenol: A comparison between electro-Fenton, sono electro-Fenton processes

Document Type: Original Article

Authors

1 Department of Chemical E-ngineering, Petroleum University of Technology, Abadan, Iran

2 Environmental Technologies Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran

Abstract

Pentachlorophenol (PCP) is a very hazardous compound that enters into the environment by industries such as refinery and petrochemical industry.  As its biological degradation is very slow, this use may be caused pollution of soils and groundwater. Here we compare the results obtained by electro-Fenton and Sono-electro-Fenton treatment methods on the degradation of pentachlorophenol.  Better performance arises from the coupling between ultrasound irradiation and the Electro Fenton process. The effect of operating parameters such as hydrogen peroxide concentration, solution pH and treatment time was studied. The results showed that Sono-E-F process was able to remove the higher amount of pentachlorophenol (PCP) by consuming the smallest amount of H2O2 at least time In comparison with the E-F process. The PCP degradation kinetics was studied and compared for two processes.

Keywords