Radiation-Induced Degradation and the Effect of Scavengers on Benzene, Monochlorobenzene and 1,2-Dichlorobenzene in Aqueous Solutions

Abstract

The degradation of benzene, monochlorobenzene and 1,2-dichlorobenzene in aqueous solution by gamma irradiation was investigated. The effect of the irradiated solution composition was studied. The results showed that benzene is more resistant to destruction than chlorinated benzenes. The presence of oxidizing and reducing reactive species and the rapid reaction rates with halogenated benzenes increased the degradation rate of the pollutants. Dechlorination of CB and 1,2-DCB was observed. High performance liquid chromatography (HPLC) and spectroscopy (UV-Vis) were used to monitor changes in the radiation solutions. The final aqueous irradiation products were shown to be a complex mixture of by-products. The addition of scavengers such as methanol and ethanol required larger doses to decompose the pollutants when compared to those solutions with no additives.

Gamma Radiation Induced Formation of Iodine Monochloride in Iodine in Some Aromatic Chlorinated Solvents

“…In case of I 2 in chlorobenzenes, ICl is the main product containing iodine although very small amounts of C 6 H 6 , C 6 H 5 C 6 H 5 , C 6 H 5 C 6 H 5 Cl, C 6 H 4 ICl and C 6 H 5 I (G < 0.5) have also been detected 10,11 . The primary dissociation reaction may take place directly through dissociation of excited molecules or indirectly through ionic intermediates 12 .…”

Radiolytic degradation mechanism of gallic acid and its end‐products

“…Degradation induced by radiation of complex compounds is also a promising technology to achieve the aforementioned goal of degrading biorecalcitrant species allowing the subsequent use of biological processes. [8][9][10] One of the main advantages of radiolytic processes is the fact that no other chemicals are added to the wastewater.…”