Effect of electron beam irradiation on the degradation of monochlorophenols in aqueous solution

Article type: Research Article

Authors: ADELEKE, Olukunle Francis | ZHOU, Rui-min | Zu, Jian-hua | Ekoko, Bakambo Gracien

Affiliations: School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200072, China | Shanghai Applied Radiation Institute, Shanghai University, Shanghai 201800, China

Note: [] Corresponding author. E-mail: kadeleke@yahoo.com

Abstract: Electron beam was successfully used for the degradation of 2-chlorophenol (2-CP) and 4-chlorophenol (4-CP) in aqueous solutions in this research. The effect of radiation dose on substrate degradation and dechlorination of solutions with concentration of 50 mg/L was investigated. The effect of initial concentration, pH and presence of oxygen was also investigated. The concentration of 2-CP and 4-CP remaining in solution after irradiation were measured by HPLC. The results showed that increased radiation dose led to increased degradation of the chlorophenols and increased Cl^- yield. Deaeration was also found to significantly increase the rate of degradation of chlorophenols in water while degradation and dechlorination under alkaline condition was lower than at low to neutral pH.

Keywords: electron beam, monochlorophenols, degradation, deaeration

Journal: Journal of Environmental Sciences, vol. 17, no. 2, pp. 301-304, 2005