Radiolytic degradation of octachlorodibenzo-p-dioxin and octachlorodibenzofuran in organic solvents and treatment of dioxin-containing liquid wastes |
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| Affiliation: | 1. Department of Chemistry and the Tsinghua Center for Frontier Polymer Research, Tsinghua University, Beijing 100084, China;2. Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics of the Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China;3. PCFM Lab, DSAPM Lab and KLGHEI of Environment and Energy Chemistry, FCM Institute, State Key Laboratory of Optoelectronic Materials and Technologies, School of Chemistry and Chemical Engineering, Sun Yat-sen University, Guangzhou 510275, China;1. Central Metallurgical Research & Development Institute (CMRDI), P.O. Box: 87, Helwan 11421, Egypt;2. Department of Physics, Faculty of Science, Ain Shams University, Cairo, Egypt;1. Centro de Graduados e Investigación en Química, Instituto Tecnológico de Tijuana, Apartado Postal 1166, Tijuana, B.C. 22510, Mexico;2. Dresden University of Technology, Physical Chemistry of Polymers, D-01062 Dresden, Germany |
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| Abstract: | Degradations of octachlorodibenzo-p-dioxin (OCDD) and octachlorodibenzofuran (OCDF) were studied by 60Co γ-ray in organic solvents: ethanol, n-nonane, and toluene. Both OCDD and OCDF were degraded more efficiently in ethanol than in n-nonane or toluene. The degradation is mainly attributed to electrons and in part to solvent radicals. The addition of ethanol to dioxin-containing liquid wastes enhanced effectively the degradation of dioxins; the liquid wastes did not exhibit the dioxin toxicity at a dose of 100 kGy. |
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