Spectral and chromatographic study of the effect of UV preirradiation on the biodegradation of phenols |
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| Authors: | O. N. Chaikovskaya I. V. Sokolova E. A. Karetnikova E. S. Lipatnikova |
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| Affiliation: | (1) College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, People’s Republic of China;(2) Department of Environmental Engineering, College of Life and Environmental Science, Shanghai Normal University, Shanghai, 200234, People’s Republic of China; |
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| Abstract: | The effect of UV radiation of a KrCl excilamp on the biodegradation of 4-nitrophenol, 2,5-dinitrophenol, and their mixture by a Penicillium tardum H-2 isolate strain and microbiocenosis of activated sludge was studied. It was shown that the efficiency of the successive photodegradation and biodegradation of nitrophenols depended on the initial concentration and the time of UV preirradiation. UV irradiation increased the efficiency of the biodegradation of 2,5-dinitrophenol with respect to the biodegradation alone. Preliminary UV irradiation inhibited the subsequent biodegradation of 4-nitrophenol by a Penicillium tardum H-2 isolate strain and activated sludge. |
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