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Bisphenol A affects microbial interactions and metabolic responses in sludge anaerobic digestion.
He, Xiao; Xiang, Yinping; Xu, Rui; Gao, Hanbing; Guo, Zhaohui; Sun, Weimin.
Afiliación
  • He X; Institute of Environmental Engineering, School of Metallurgy and Environment, Central South University, No. 932 Lushan South Road, Changsha, 410083, People's Republic of China.
  • Xiang Y; College of Environmental Science and Engineering, Key Laboratory of Environmental Biology and Pollution Control (Ministry of Education), Hunan University, Changsha, 410082, People's Republic of China.
  • Xu R; Institute of Environmental Engineering, School of Metallurgy and Environment, Central South University, No. 932 Lushan South Road, Changsha, 410083, People's Republic of China. xurui7@csu.edu.cn.
  • Gao H; Institute of Environmental Engineering, School of Metallurgy and Environment, Central South University, No. 932 Lushan South Road, Changsha, 410083, People's Republic of China.
  • Guo Z; Institute of Environmental Engineering, School of Metallurgy and Environment, Central South University, No. 932 Lushan South Road, Changsha, 410083, People's Republic of China.
  • Sun W; Guangdong Key Laboratory of Integrated Agro-Environmental Pollution Control and Management, Institute of Eco-Environmental and Soil Sciences, National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangdong Academy of Sciences, Guangzhou, 51065
Environ Sci Pollut Res Int ; 31(13): 19635-19648, 2024 Mar.
Article en En | MEDLINE | ID: mdl-38363507
ABSTRACT
The widespread use of bisphenol A (BPA) has resulted in the emergence of new pollutants in various environments, particularly concentrated in sewage sludge. This study investigated the effects of BPA on sludge anaerobic digestion, focusing specifically on the interaction of microbial communities and their metabolic responses. While the influence of BPA on methane accumulation is not significant, BPA still enhanced the conversion of soluble COD, protein, and polysaccharides. BPA also positively influenced the hydrolysis-acidogenesis process, leading to 17% higher concentrations of volatile fatty acids (VFAs). Lower BPA levels (0.2-0.5 mg/kg dw) led to decreased hydrolysis and acidogenesis gene abundance, indicating metabolic inhibition; conversely, higher concentrations (1-5 mg/kg dw) increased gene abundance, signifying metabolic enhancement. Diverse methane metabolism was observed and exhibited alterations under BPA exposure. The presence of BPA impacted both the diversity and composition of microbial populations. Bacteroidetes, Proteobacteria, Firmicutes, and Chloroflexi dominated in BPA-treated groups and varied in abundance among different treatments. Changes of specific genera Sedimentibacter, Fervikobacterium, Blvii28, and Coprothermobacter in response to BPA, affecting hydrolysis and acetogenesis. Archaeal diversity declined while the hydrogenotrophic methanogen Methanospirillum thrived under BPA exposure. BPA exposure enabled microorganisms to form structured community interaction networks and boost their metabolic activities during anaerobic digestion. The study also observed the enrichment of BPA biodegradation pathways at high BPA concentrations, which could interact and overlap to ensure efficient BPA degradation. The study provides insights into the digestion performance and interactions of microbial communities to BPA stress and sheds light on the potential effect of BPA during anaerobic digestion.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Fenoles / Aguas del Alcantarillado / Compuestos de Bencidrilo / Reactores Biológicos Idioma: En Revista: Environ Sci Pollut Res Int Asunto de la revista: SAUDE AMBIENTAL / TOXICOLOGIA Año: 2024 Tipo del documento: Article Pais de publicación: Alemania
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Fenoles / Aguas del Alcantarillado / Compuestos de Bencidrilo / Reactores Biológicos Idioma: En Revista: Environ Sci Pollut Res Int Asunto de la revista: SAUDE AMBIENTAL / TOXICOLOGIA Año: 2024 Tipo del documento: Article Pais de publicación: Alemania