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- Title
Construction and function of a high-efficient synthetic bacterial consortium to degrade aromatic VOCs.
- Authors
Lv, Ying; Wang, Liangshi; Liu, Xingyu; Chen, Bowei; Zhang, Mingjiang
- Abstract
Aromatic volatile organic compounds (VOCs) are a type of common pollution form in chemical contaminated sites. In this study, seven aromatic VOCs such as benzene, toluene, ethylbenzene, chlorobenzene, m-xylene, p-chlorotoluene and p-chlorotrifluorotoluene were used as the only carbon source, and four strains of highly efficient degrading bacteria were screened from the soil of chemical contaminated sites, then the synthetic bacterial consortium was constructed after mixing with an existing functional strain (Bacillus benzoevorans) preserved in the laboratory. After that, the synthetic bacterial consortium was used to explore the degradation effect of simulated aromatic VOCs polluted wastewater. The results showed that the functional bacterium could metabolize with aromatic VOCs as the only carbon source and energy. Meanwhile, the growth of the synthetic bacterial consortium increased with the additional carbon resources and the alternative of organic nitrogen source. Ultimately, the applicability of the synthetic bacterial consortium in organic contaminated sites was explored through the study of broad-spectrum activity. Highlights: A high-efficient synthetic bacterial consortium was constructed to degrade aromatic VOCs. Additional carbon and alternative of organic nitrogen can effectively promote the degradation. Degradation rate of total aromatic VOCs gained over 75% by the synthetic bacterial consortium.
- Subjects
HAZARDOUS waste sites; VOLATILE organic compounds; POLLUTION; BACILLUS (Bacteria)
- Publication
Bioprocess & Biosystems Engineering, 2023, Vol 46, Issue 6, p851
- ISSN
1615-7591
- Publication type
Article
- DOI
10.1007/s00449-023-02869-2