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Radiation Treatment of Terephthalic Acid and Ethylene Glycol by using Gamma-rays  

Lee, Sun-Mi (Division of Environmental Science & Ecological Engineering, Korea University)
Jo, Hun-Je (Division of Environmental Science & Ecological Engineering, Korea University)
Kim, Jeong-Gyu (Division of Environmental Science & Ecological Engineering, Korea University)
Jung, Jinho (Division of Environmental Science & Ecological Engineering, Korea University)
Publication Information
Journal of Korean Society on Water Environment / v.20, no.5, 2004 , pp. 452-456 More about this Journal
Abstract
Gamma-rays effectively decomposed TPA and EG, thus removal of $1.0{\times}10^{-3}$ M pollutants was near 65 and 95%, respectively, at an absorbed dose of 10 kGy. However, TOC removal in the radiation treatment was less than 5% due to a low transformation of both TPA and EG to $CO_2$. For TPA, gamma-ray treatment largely reduced biodegradability($BOD_5/COD$) by degrading TPA to non-biodegradable organic acids. This implies that the change of biodegradability should be considered when the radiation treatment is combined with conventional biological techniques. A weight-loss wastewater containing TPA and EG was also purified by gamma-ray treatment. Extraordinarily, biodegradability of the wastewater was increased at a low dose of 1 kGy. Though underlying mechanism was not clearly identified, this result stresses the effect of wastewater composition and absorbed dose on the biodegradability change.
Keywords
Gamma-rays; Terephthalic acid; Ethylene glycol; Biodegradability; Weight-loss wastewater;
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  • Reference
1 Rodriguez, M., Sarria, V., Esplugas, S. and Pulgarin, C., Photo-Fenton treatment of a biorecalcitrant wastewater generated in textile acuviues: biodegradability of the photo-treatment solution, Journal of Photochemistry and Photohiology A: Chemistry, 151, pp. 129-135 (2002)
2 Pagga, U., Testing biodegradability with standardized method, Chemosphere, 35, pp. 2953-2972 (1997)
3 Jung, J., Jo, H.J., Lee, S.M. and Kim, J.G., Enhancement of biodegradability of EDTA by gamma-ray treatment, Journal of Radioanalytical and Nuclear Chemistry. in press
4 Verschueren, K., Handhook of environmental data on organic chemicals, 4th ed., Wiley, New York, U. S. A. (2001)
5 Yang, H.Y., Petrov, S. and Han, D.H., The oxidative degradation of phenol by electron beam accelerator, Journal of the Korean Institute of Chemical Engineers, 32, pp. 80-85 (2000)
6 Kim, Y.R., Treatment of dyeing wastewater using electron beam and biological treatment processes, Ph.D. thesis, KAIST, Korea (2001)
7 Korea standard methods for water quality, Ministry of Environment, Korea (2000)
8 Al-Momani, F., Touraud, E., Degorce-Durnas, J.R., Roussy, J. and Thomas, O., Biodegradability enhancement of textile dyes and textile wastewater by VUV photolysis, Journal of Photochemistry and Photohiology A: Chemistry, 153, pp. 191-197 (2002)
9 Getoff, N., Radiation-induced degradation of water pollutant-State of Art, Radiation Physics and Chemistry, 47, pp. 581-593 (1996)
10 Han, B., Kim, J., Kim, Y., Chung, W., Makarov, I.E., Ponornarev, A.V. and Pikaev, A.K., Combined electron-beam and biological treatment of dyeing complex wastewater. Pilot plant experiments, Radiation Physics and Chemistry, 64, pp. 53-59 (2002)
11 Yeber, M.C., Rodriguez, J., Freer, J., Baeza J. and Duran N., Advanced oxidation of a pulp mill bleaching wastewater, Chemosphere, 39, pp. 1679-1688 (1999)