Effect of dose rate on degradation of 2,6-dichlorophenol by electron beam irradiation

The effects of different dose rates on the degradation of 2,6-dichlorophenol (2,6-DCP) in aqueous solution were investigated at about 2 × 10 4 Gy absorbed dose, using a 10 MeV electron beam accelerator. It was found that the removal efficiency decreased with increasing dose rate at all initial concentrations of 0.5, 1 and 2 g L −1 , and the effect was significantly diminished by addition of P25 TiO 2 nanoparticles. Alkaline medium were unfavorable for degradation of 2,6-DCP. Hydrogen peroxide (H 2 O 2 ) could promote the removal efficiency at a lower dose rate rather than at a higher one.