Characterization of Pseudomonas stutzeri NT-I capable of removing soluble selenium from the aqueous phase under aerobic conditions
| Autor: | Masaya Yoshioka, Akiko Sato, Emi Notaguchi, Kazunari Sei, Takanobu Narita, Michihiko Ike, Masashi Kuroda, Mitsuo Yamashita, Tsubasa Kagami, Satoshi Soda, Hasegawa Ai |
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| Rok vydání: | 2011 |
| Předmět: |
Pseudomonas stutzeri
biology Strain (chemistry) Aqueous two-phase system Industrial Waste chemistry.chemical_element Bioengineering biology.organism_classification Applied Microbiology and Biotechnology Selenate Industrial wastewater treatment Selenium chemistry.chemical_compound chemistry Wastewater Environmental chemistry Oxidoreductases Water Microbiology Oxidation-Reduction Anaerobic exercise Biotechnology Nuclear chemistry |
| Zdroj: | Journal of Bioscience and Bioengineering. 112:259-264 |
| ISSN: | 1389-1723 |
| DOI: | 10.1016/j.jbiosc.2011.05.012 |
| Popis: | Pseudomonas stutzeri strain NT-I was isolated from the drainage wastewater of a selenium refinery plant. This bacterium efficiently reduced selenate to elemental selenium without prolonged accumulation of selenite under aerobic conditions. Strain NT-I was able to reduce selenate completely at high concentrations (up to 10 mM) and selenite almost completely (up to 9 mM). In addition, higher concentrations of selenate and selenite were substantially reduced. Activity was observed under the following experimental conditions: 20–50°C, pH 7–9, and 0.05–20 g L–1 NaCl for selenate reduction, and 20–50°C, pH 6–9, and 0.05–50 g L–1 NaCl for selenite reduction. Under anaerobic conditions, selenate was reduced more rapidly, whereas selenite was not reduced at all. The high selenate- and selenite-reducing capability at high concentrations suggested that strain NT-I is suitable for the removal of selenium from high-strength industrial wastewater. |
| Databáze: | OpenAIRE |
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