Inhibitory effect of the xenobiotic 1,2-dichloroethane in a nitrifying biofilm reactor
Autor: | Ferhan Çeçen, B. Alpaslan Kocamemi |
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Rok vydání: | 2007 |
Předmět: |
inorganic chemicals
Nitrates Environmental Engineering Bacteria Chemistry Biofilm Cometabolism Xenobiotics Microbiology Quaternary Ammonium Compounds chemistry.chemical_compound Bioreactors Hydroxylamine Nitrate Biofilms Environmental chemistry Bioreactor Nitrification Ethylene Dichlorides Nitrite Xenobiotic Nitrites Water Pollutants Chemical Water Science and Technology |
Zdroj: | Water Science and Technology. 55:67-73 |
ISSN: | 1996-9732 0273-1223 |
Popis: | The aim was to investigate the inhibitory effect of the xenobiotic 1,2-DCA on nitrification during the cometabolic degradation in a packed bed nitrifying biofilm reactor. This xenobiotic inhibited primarily the conversion of NH4-N to hydroxylamine by binding to the AMO enzyme. It had no inhibitory effect on the conversion of nitrite to nitrate. At high NH4-N loadings, the presence of 1,2-DCA inhibited NH4-N utilisation more severely than at low loadings. The suppressing effect of 1,2-DCA on NH4-N utilisation was found to be reversible due to the ability of cells to recover from inhibition. These results could fill a gap in the literature about the potential use of nitrifying biofilm systems for cometabolic treatment of 1,2-DCA and could be useful in the design of engineered 1,2-DCA remediation/treatment in biofilm reactors. |
Databáze: | OpenAIRE |
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