Biodegradation of CuTETA, an effluent by-product in mineral processing
| Autor: | S. Kelebek, Siqing Yue, Juliana A. Ramsay, Alexander M. L. Cushing |
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| Rok vydání: | 2017 |
| Předmět: |
0301 basic medicine
Health Toxicology and Mutagenesis 030106 microbiology chemistry.chemical_element 010501 environmental sciences 01 natural sciences Trientine 03 medical and health sciences chemistry.chemical_compound Soil Coordination Complexes Metals Heavy By-product Polyamines Environmental Chemistry Effluent 0105 earth and related environmental sciences Chelating Agents Minerals biology Water General Medicine Biodegradation biology.organism_classification Pollution Copper Carbon Biodegradation Environmental chemistry Triethylenetetramine Reagent Amine gas treating Paecilomyces Nuclear chemistry |
| Zdroj: | Environmental science and pollution research international. 25(18) |
| ISSN: | 1614-7499 |
| Popis: | Polyamines such as triethylenetetramine (TETA) and other amine chelators are used in mineral processing applications. Formation of heavy metal complexes of these reagents as a by-product in effluent water is a recent environmental concern. In this study, Paecilomyces sp. was enriched from soil on TETA as the sole source of carbon and nitrogen and was found to degrade > 96 and 90% CuTETA complexes at initial concentrations of 0.32 and 0.79 mM respectively, following 96-h incubation. After destabilization, most of the copper (> 78%) was complexed extracellularly and the rest was associated with the cell. Mass spectroscopy results provided confirmation that copper re-complexed with small, extracellular, and organic molecules. There are no reports in the literature that Paecilomyces or any other organism can grow on TETA or CuTETA. This study is the first to show that biological destabilization of CuTETA complexes in mineral processing effluents is feasible. |
| Databáze: | OpenAIRE |
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