Decomposition of chlorinated phenol, benzoic acid and benzylamine by -ray irradiation in zeolite-water mixture

Sugawara, Atsushi*; Kumagai, Yuta   ; Watanabe, Masayuki   ; Kimura, Atsushi*; Taguchi, Mitsumasa*; Fujisawa, Kiyoshi*

Radiation-induced decomposition of three chlorinated aromatic compounds in zeolite-water mixture was studied, in order to evaluate decomposition yields of the aromatics adsorbed on the zeolite. The adsorption and condensation in zeolite pore structure has a possibility to improve the decomposition yield of aqueous organics in treatments of environmental water using ionizing radiations. In this study, the decomposition yields of 4-chlorophenol (4-ClPh), 4-chlorobenzoic acid (4-ClBAc), 4-chlorobenzylamine(4-ClBAm) were examined. The decomposition yield of adsorbed 4-ClBAm was lower than that in pure water. On the other hand, adsorbed 4-ClPh decomposed at a yield as high as in pure water. Moreover, a slight increase in the yield was overserved for 4-ClBAc. These results suggest that the decomposition yields of adsorbed aromatics are dependent on the reactivity with carriers of energy transfer from solid zeolite framework to water in the pore.