Journal of Kermanshah University of Medical Sciences
Peer-reviewed Medical Quarterly
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The effect of hydrogen peroxide and solvent on photolysis of PCBs to reduce occupational exposure
Author(s):
Hasan Asilian1, Reza Gholamnia1,*, Abbas Rezaee1, Ahmad Jonidi Jafari2, Ali Khavanin1, Elmira Darabi31Dept. of Occupational and Environmental Health, School of Medicine Sciences, Tarbiat Modares University, Tehran, Iran
2Dept. of Occupational Health, School of Health, Iran University of Medical Sciences, Tehran, Iran
3Labratory of Llife Environment Organization, Tehran, Iran
*Corresponding Author: Corresponding author: Reza Gholamnia, Dept. of Occupational and Environmental Health, School of Medicine Sciences, Tarbiat Modares University, Tehran, Iran, Tel: +98 21 88013030 Email: [email protected]
Published online:Dec 19, 2010
Article type:Research Article
Received:Sep 14, 2009
Accepted:Feb 16, 2010
How to Cite:Asilian H, Gholamnia R, Rezaee A, Jonidi Jafari A, Khavanin A, et al. The effect of hydrogen peroxide and solvent on photolysis of PCBs to reduce occupational exposure. J Kermanshah Univ Med Sci. 2010;14(3):e79471. doi:
Abstract
Background: Polychlorinated biphenyls (PCBs) are toxic bio-accumulate components and may increase risk of adverse effects on human health and the environment. For different social, technical and economic reasons, significant quantities of PCBs contaminated transformer oil are still in use or storied. The study aimed to determine the effect of hydrogen peroxide and solvent on photolysis of PCBs to reduce occupational exposure.
Methods: The photochemical annular geometry (500 ml volume) reactor was designed with a cylindrical low-pressure mercury lamp (UV-C Cathodeon TUV 6WE) with emission at 254 nm. The radiant power emitted by the lamp was 6w. The whole lamp was immersed in a reactor thermostat controlling of temperature at 32 ± 2 oC. The PCBs was determined using GC/ECD and data was analyzed by SPSS.
Results: Degradation of total PCBs in terms of %10 and %20 of volume of H2O2 were 41%, 75% and 94%, respectively. The degradation of total PCBs in terms of ratio to solvent with oil transformer in 1:1, 2:1 and 3:1 was 61%, 75% and 94%, respectively.
Conclusion: Our study show that UV-C photolysis of H2O2 leads to a degradation efficiency of PCBs only in the presence of isooctane, therefore indicating that the intermediates formation after ethanol oxidation are able to initiate PCBs degradation.
Keywords
References
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Copyright
© 2010, Journal of Kermanshah University of Medical Sciences. This open-access article is available under the Creative Commons Attribution-NonCommercial 4.0 (CC BY-NC 4.0) International License (https://creativecommons.org/licenses/by-nc/4.0/), which allows for the copying and redistribution of the material only for noncommercial purposes, provided that the original work is properly cited.
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