Anaerobic biodegradability of alkylphenols and fuel oxygenates in the presence of alternative electron acceptors
| Autor: | Jim A. Field, L. Puig-Grajales, F.P. van der Zee, Elías Razo-Flores, N.C.G. Tan |
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| Rok vydání: | 2000 |
| Předmět: |
Methyl Ethers
tert-Butyl Alcohol Alcohol Ether Euryarchaeota Xylenes Applied Microbiology and Biotechnology Bacteria Anaerobic Cresols chemistry.chemical_compound Phenols Life Science Organic chemistry Anaerobiosis Sulfate Oxygenate chemistry.chemical_classification Nitrates WIMEK Sulfates Tosylarginine Methyl Ester General Medicine Mineralization (soil science) Biodegradation Electron acceptor Ethyl Ethers Biodegradation Environmental chemistry Environmental chemistry Environmental Technology Environmental Pollutants Milieutechnologie Methane Oxidation-Reduction Ethers Biotechnology |
| Zdroj: | Applied Microbiology and Biotechnology, 54, 692-697 Applied Microbiology and Biotechnology 54 (2000) Scopus-Elsevier |
| ISSN: | 1432-0614 0175-7598 |
| Popis: | Alkylphenols and fuel oxygenates are important environmental pollutants produced by the petrochemical industry. A batch biodegradability test was conducted with selected ortho-substituted alkylphenols (2-cresol, 2,6-dimethylphenol and 2-ethylphenol), fuel oxygenates (methyl tert-butyl ether, ethyl tert-butyl ether and tert-amylmethyl ether) and tert-butyl alcohol (TBA) as model compounds. The ortho-substituted alkylphenols were not biodegraded after 100 days of incubation under methanogenic, sulfate-, or nitrate-reducing conditions. However, biodegradation of 2-cresol and 2-ethylphenol (150 mg l(-1)) was observed in the presence of Mn (IV) as electron acceptor. The biodegradation of these two compounds took place in less than 15 days and more than 90% removal was observed for both compounds. Mineralization was indicated since no UV-absorbing metabolites accumulated after 23 days of incubation. These alkylphenols were also slowly chemically oxidized by Mn (IV). No biodegradation of fuel oxygenates or TBA (1 g l(-1)) was observed after 80 or more days of incubation under methanogenic, Fe (III)-, or Mn (IV)-reducing conditions, suggesting that these compounds are recalcitrant under anaerobic conditions. The fuel oxygenates caused no toxicity towards acetoclastic methanogens activity in anaerobic granular sludge. |
| Databáze: | OpenAIRE |
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