Decolorization and detoxification of Brilliant Crocein GR by a newly enriched thermophilic consortium

The environmental pollution caused by azo dyes at high temperatures has become an urgent problem. However, little attention has been paid to decolorizing azo dyes by thermophilic consortiums. In this study, a thermophilic bacterial consortium (BCGR-T) mainly composed of two genera, namely, Caldibaci...

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Bibliographic Details
Published in:Journal of environmental management 2024-04, Vol.356, p.120623-120623, Article 120623
Main Authors: Tian, Fang, Guo, Guang, Fu, Weilian, Li, Shiji, Ding, Keqiang, Yang, Feng, Liang, Chengyue
Format: Article
Language:English
Subjects:
Aeribacillus
aniline
Azo Compounds
azo dyes
benzaldehyde
benzoic acid
Biodegradation, Environmental
Brilliant Crocein GR
Caldibacillus
catechol
Coloring Agents
decolorization
Degradation pathway
Dioxygenases
environmental management
enzyme activity
laccase
lignin peroxidase
Metagenome
metagenomics
NAD
NADP
naphthalene
Naphthalenesulfonates
phenylacetic acid
phototoxicity
phthalic acid
pollution
Thermophilic consortium
toluene
wastewater
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Summary:The environmental pollution caused by azo dyes at high temperatures has become an urgent problem. However, little attention has been paid to decolorizing azo dyes by thermophilic consortiums. In this study, a thermophilic bacterial consortium (BCGR-T) mainly composed of two genera, namely, Caldibacillus (70.90%) and Aeribacillus (17.63%) was first enriched, which can decolorize Brilliant Crocein GR (BCGR) at high temperatures (50–75 °C), pH values of 6∼8, dye concentrations (100–400 mg/L) and salinities (1–5%, w/v). The enzyme activity results showed that the azoreductase activity was nearly 8.8 times that of the control (p 
ISSN:0301-4797
1095-8630
DOI:10.1016/j.jenvman.2024.120623