Chromium-tolerant bacteria isolated from industrial effluents and their use in detoxication of hexavalent chromium
Jazyk angličtina Země Spojené státy americké Médium print
Typ dokumentu časopisecké články, práce podpořená grantem
PubMed
10489694
DOI
10.1007/bf02816221
Knihovny.cz E-zdroje
- MeSH
- biodegradace MeSH
- časové faktory MeSH
- chrom metabolismus MeSH
- gramnegativní bakterie růst a vývoj izolace a purifikace metabolismus MeSH
- grampozitivní koky růst a vývoj izolace a purifikace metabolismus MeSH
- kadmium metabolismus MeSH
- koncentrace vodíkových iontů MeSH
- olovo metabolismus MeSH
- průmyslová mikrobiologie * MeSH
- teplota MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
- Názvy látek
- chrom MeSH
- kadmium MeSH
- olovo MeSH
Three bacterial strains were isolated from effluents of leather (CMBL Cr13, CMBL Cr14) and steel (CMBL Cr15) industries for their possible use in chromium(VI) detoxication of industrial waste. CMBL Cr13 was found to tolerate chromium(VI) up to a concentration of 45 g/L in the medium, while CMBL Cr14 and CMBL Cr15 could tolerate up to 40 g/L. These bacteria were also checked for resistance to other metals. They resisted a lead concentration of 1 g/L and cadmium concentration of 550 mg/L in the medium. They showed optimum growth at pH 7.3-7.5 at a temperature of 35-37 degrees C. CrVI-reducing ability of the three strains ranged from 70 to 80% after 3 d of incubation. The possible use of these bacteria in environmental cleanup is discussed.
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