Assessment of the Biodegradability of Dialkyldimethylammonium Salts in Flow Through Systems
| Autor: | C.G. van Ginkel, M. G. J. Geurts, A. M. van Haperen, A. Hoenderboom |
|---|---|
| Rok vydání: | 2003 |
| Předmět: |
chemistry.chemical_classification
Environmental Engineering Silica gel Inorganic chemistry Substrate (chemistry) Salt (chemistry) General Medicine Biodegradation Water Purification Quaternary Ammonium Compounds chemistry.chemical_compound Biodegradation Environmental Adsorption Activated sludge chemistry Water Movements Organic chemistry Water Pollutants lipids (amino acids peptides and proteins) Ammonium Water Microbiology Oxidation-Reduction Alkyl |
| Zdroj: | Journal of Environmental Science and Health, Part A. 38:1825-1835 |
| ISSN: | 1532-4117 1093-4529 |
| DOI: | 10.1081/ese-120022881 |
| Popis: | A bacterium capable of utilizing the alkyl chains of didecyldimethylammonium salt was isolated from activated sludge. In addition, the isolate also utilized didodecyldimethylammonium salt, ditetradecyldimethylammonium salt and alkyltrimethylammonium salts (C10 to C18) as sole source of carbon and energy. The broad substrate with respect to the alkyl chain length was also demonstrated with oxidation rates of various quaternary ammonium salts by didecyldimethylammonium chloride-grown cells. The oxidation rate decreased with increasing alkyl chain lengths. The main factor impeding the biodegradation of dialkyldimethylammonium salts with long alkyl chains is probably the low bioavailability of water-insoluble chemicals. The biodegradability of dialkyldimethylammonium salts was therefore determined in flow-through columns at concentrations below their aqueous solubility. Dialkyldimethylammonium salts adsorbed on silica gel particles packed in flow-through columns were immediately metabolized by the isolate when dissolved. Microorganisms present in river water pumped through a sterile column degraded dissolved dicocodimethylammonium salts within a week. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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