Degradation of Naturally Contaminated Polycyclic Aromatic Hydrocarbons in Municipal Sewage Sludge by Electron Beam Irradiation

Abstract

This study was to evaluate the degradation efficiency of naturally contaminated polycyclic aromatic hydrocarbons in sewage sludge by using electron beam irradiation as a function of the absorbed dose. Degradation efficiency of PAHs was near to 90% at the absorbed doses 5 kGy. The degradation of PAHs was "first order" reaction rates with respect to absorbed dose. The electron beam irradiation was found effective in means of removing PAHs in domestic wastewater.

Destruction of acenaphthene, fluorene, anthracene and pyrene by a dc gliding arc plasma reactor

“…Photocatalytic degradation of PAHs on soils surface using TiO 2 under UV light was studied by Zhang et al, which concluded that catalyst TiO 2 can accelerate the PAHs photodegradation speed for 3-4 times [5]. Owing to having large number of energetic electrons and reactive radicals such as OH, O and H, electron beam irradiation has been applied to PAHs destruction in sewage sludge and the destruction rate of PAHs was reported to be about 90% at absorbed dose 5 kGy [6]. The aforementioned technologies are mainly used for destruction of PAHs in solid or liquid phase and a few publications are concerning with PAHs removal in gas flow.…”