Accelerated biodegradation of BPA in water-sediment microcosms with Bacillus sp. GZB and the associated bacterial community structure

Autor: Guiying Li, Jukun Xiong, Ping'an Peng, Taicheng An
Rok vydání: 2017
Předmět:
0301 basic medicine
endocrine system
Bioaugmentation
Geologic Sediments
Environmental Engineering
food.ingredient
Health
Toxicology and Mutagenesis
Microorganism
030106 microbiology
ved/biology.organism_classification_rank.species
Phenylobacterium
Bacillus
010501 environmental sciences
01 natural sciences
Thiobacillus
Electronic Waste
Microbiology
03 medical and health sciences
food
Phenols
RNA
Ribosomal
16S
Environmental Chemistry
Yeast extract
Benzhydryl Compounds
0105 earth and related environmental sciences
biology
urogenital system
ved/biology
Public Health
Environmental and Occupational Health
Water
General Medicine
General Chemistry
Biodegradation
biology.organism_classification
Pollution
Biodegradation
Environmental
Environmental chemistry
Cloacibacterium
Microcosm
hormones
hormone substitutes
and hormone antagonists
Water Pollutants
Chemical
Zdroj: Chemosphere. 184
ISSN: 1879-1298
Popis: Bisphenol A (BPA) is a synthetic chemical primarily used to produce polycarbonate plastics and epoxy resins. Significant industrial and consumer's consumption of BPA-containing products has contributed to extensive contamination in different environmental matrices. In this study, microcosms bioaugmented with Bacillus sp. GZB were constructed to investigate BPA biodegradation, identify the main bacterial community, and evaluate bacterial community responses in the microcosms. Under aerobic conditions, BPA was quickly depleted as a result of bioaugmentation with Bacillus sp. GZB in water-sediment contaminated with pollutants. The pollutants used were generally associated with the electronic wastes (mobile phones, computers, televisions) dismantling process. Adding BPA affected the bacterial community composition in the water-sediment. Furthermore, BPA biodegradation was enhanced by adding electron donors/co-substrates: humic acid, NaCl, glucose, and yeast extract. Metagenomic analysis of the total 16S rRNA genes from the BPA-degrading microcosms with bioaugmentation illustrated that the genera Bacillus, Thiobacillus, Phenylobacterium, and Cloacibacterium were dominant after a 7-week incubation period. A consortium of microorganisms from different bacterial genera may be involved in BPA biodegradation in electronic waste contaminated water-sediment. This study provides new insights about BPA bioaugmentation and bacterial ecology in the BPA-degrading environment.
Databáze: OpenAIRE
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