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

Journal of Hazardous Materials
F J DeiveM A Sanromán

Abstract

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.

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Citations

Jan 18, 2013·Applied Microbiology and Biotechnology·Kian Mau GohKok-Gan Chan
Jun 22, 2012·Bioprocess and Biosystems Engineering·F MoscosoM A Sanromán
Jan 2, 2013·Bioprocess and Biosystems Engineering·F MoscosoM A Sanromán
Jun 27, 2012·Environmental Science and Pollution Research International·O IglesiasM A Sanromán
Aug 2, 2012·Environmental Science and Pollution Research International·O IglesiasM A Sanromán
Sep 22, 2012·Environmental Science and Pollution Research International·Prachi Kaushik, Anushree Malik
Jun 14, 2013·The Journal of General and Applied Microbiology·Laura ChişFlorin Dan Irimie
Apr 29, 2015·Biotechnology Advances·M Sofía UrbietaKian Mau Goh
Jun 29, 2012·Bioresource Technology·F MoscosoM A Sanromán
Feb 1, 2018·Environmental Science and Pollution Research International·Saurabh Mishra, Abhijit Maiti
Dec 29, 2018·Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering·Saurabh Mishra, Abhijit Maiti
Nov 15, 2018·Frontiers in Microbiology·Roberto OrellanaMichael Seeger
Jun 27, 2019·Environmental Science and Pollution Research International·Yan ChenQinghua Zhang
Sep 22, 2019·Journal of Hazardous Materials·Patricia GiovanellaLara D Sette
Jun 3, 2021·International Journal of Environmental Research and Public Health·Giovanni GalloGabriella Fiorentino

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