Details

Autor(en) / Beteiligte

• Deive, F.J.
• Domínguez, A.
• Barrio, T.
• Moscoso, F.
• Morán, P.
• Longo, M.A.
• Sanromán, M.A.

Titel

Decolorization of dye Reactive Black 5 by newly isolated thermophilic microorganisms from geothermal sites in Galicia (Spain)

Ist Teil von

• Journal of hazardous materials, 2010-10, Vol.182 (1), p.735-742

Ort / Verlag

Kidlington: Elsevier B.V

Erscheinungsjahr

2010

Quelle

MEDLINE

Beschreibungen/Notizen

• In this study, thermophilic microbial strains from thermal spots in northwestern Spain displaying excellent decolorization capability were isolated. The research work tackled: (i) the ability of consortia to degrade a model di-azo dye Reactive Black at different pHs in flask cultures, obtaining that just neutral pHs licensed degradation levels near to 70%, (ii) the isolation of tree of the bacteria, which rendered possible reaching high levels of decolorization (80%) after just 24 h in aerobic conditions, and which were identified through 16S rRNA sequencing to possess high homology (99%) with Anoxybacillus pushchinoensis, Anoxybacillus kamchatkensis and Anoxybacillus flavithermus, and (iii) the cultivation of the isolates in a bench-scale bioreactor, which led to a decolorization rate two-fold higher than that obtained in flask cultures. Therefore, this work makes up the first time that a decolorization process of an azo dye by thermophilic microorganisms in aerobic conditions is investigated.