Radiolytic degradation of 1,2,4-trichlorobenzene (TCB) in some organic solvents by gamma rays: The kinetic properties of complete dechlorination of TCB and its pathway.
| Autor: | Karimov S; French-Azerbaijani University under Azerbaijan State Oil and Industry University, Baku, Azerbaijan., Abdullayev E; Sumgait State University, Sumgait, Azerbaijan., Millet M; University of Strasbourg, The Institute of Chemistry and Processes for Energy, Environment and Health, Strasbourg, France., Gurbanov M; Institute of Radiation Problems, Radiation Chemistry of Environment, Baku, Azerbaijan. |
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| Jazyk: | angličtina |
| Zdroj: | Heliyon [Heliyon] 2024 May 18; Vol. 10 (10), pp. e31547. Date of Electronic Publication: 2024 May 18 (Print Publication: 2024). |
| DOI: | 10.1016/j.heliyon.2024.e31547 |
| Abstrakt: | This study investigates the degradation of TCB in methanol, ethanol, hexane, and benzene solutions using gamma radiolysis. Kinetic properties of TCB dechlorination and its pathway are examined, with TCB selected as a representative chlorinated organic compound. Chromatograms of irradiated samples and mass spectra of liquid-phase products are presented. The change in concentration of TCB, dichlorobenzenes (DCB), chlorobenzene (MCB), and benzene with absorbed doses are observed. The radiation-chemical yield (G values) of TCB in the solvents are calculated as 1.83, 2.56, 1.93, and 1.84 100eV -1 in methanol, ethanol, hexane, and benzene solutions, respectively. 100 % degradation of TCB by gamma irradiation is found to be efficient in polar solvents but leads to a wide variety of byproducts in low polar solvents, particularly the formation of polychlorinated biphenyls in TCB + benzene solutions, making benzene an incompatible medium. The main dechlorination pathway of TCB involves the formation of 1,4-DCB, MCB, and benzene. Environmental Implication. The gamma irradiation of chlorinated organic compounds, focusing on TCB as a model compound, was investigated due to its status as a hazardous material for the environment and living organisms. TCB is a byproduct of the dechlorination of certain chlorinated pesticides listed under the Stockholm Convention's Persistent Organic Pollutants (POPs) list, which prohibits their production and use. Gamma irradiation was found to be an effective method for the degradation of chlorinated compounds, achieving 100 % degradation during irradiation. The study underscores the potential of gamma irradiation as a viable approach for the treatment of chlorinated compounds, particularly in addressing environmental and health concerns associated with TCB and related compounds. Competing Interests: The authors declare the following financial interests/personal relationships which may be considered as potential competing interests: Samir Karimov reports equipment, drugs, or supplies was provided by Azerbaijan State Oil and Industry University. Muslum Gurbanov reports equipment, drugs, or supplies and writing assistance were provided by Azerbaijan National Academy of Sciences Institute of Radiation Problems. (© 2024 The Authors. Published by Elsevier Ltd.) |
| Databáze: | MEDLINE |
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