Characterization and optimization of Fe(II)Cit-NO reduction byPseudomonassp
| Autor: | Ling-Lin Cai, Nan Liu, Jin-Lin Jiang, Wei Li |
|---|---|
| Rok vydání: | 2011 |
| Předmět: |
Strain (chemistry)
biology Inorganic chemistry Pseudomonas Temperature General Medicine Hydrogen-Ion Concentration biology.organism_classification Citric Acid Nitric oxide Ferrous chemistry.chemical_compound chemistry Reagent Environmental Chemistry Environmental Pollutants Nitrogen Oxides Nitrogen oxide Chelation Ferrous Compounds Waste Management and Disposal NOx Cell Proliferation Water Science and Technology |
| Zdroj: | Environmental Technology. 32:1947-1953 |
| ISSN: | 1479-487X 0959-3330 |
| DOI: | 10.1080/09593330.2011.559277 |
| Popis: | Biological reduction of nitric oxide (NO), chelated by ferrous L (L: chelate reagent), to N2 is one of the core processes in a chemical absorption-biological reduction integrated technique for nitrogen oxide (NOx) removal from flue gases. In this study, a newly isolated strain, Pseudomonas sp., was used to reduce NO chelated by Fe(II)Cit (Cit: citrate) as Fe(II)Cit-NO, and some factors were investigated. The results showed that, at the NO concentration of 670 mg/m3, 65.9% of NO was totally reduced within 25 h under anaerobic conditions, and the optimal conditions for the bioreduction of NO were found. The strain of Pseudomonas sp. could efficiently use glucose as the carbon source for Fe(II)Cit-NO reduction. Though each complex could be reduced by its own dedicated bacterial strain, Fe(III)Cit could also be reduced by the strain of Pseudomonas sp. The nitrite ion, NO2-, could inhibit cell growth and thus affect the Fe(III) reduction process. These findings provide some useful data for Fe(II)Cit-NO reduction, scrubber solution regeneration and NOx removal process design. |
| Databáze: | OpenAIRE |
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