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- Title
Simultaneous bisphenol F degradation, heterotrophic nitrification and aerobic denitrification by a bacterial consortium.
- Authors
Lu, Hong; Weng, Zihang; Wei, Hao; Zhou, Jiti; Wang, Jing; Liu, Guangfei; Guo, Wanqian
- Abstract
BACKGROUND Traditional aerobic autotrophic nitrification and anoxic heterotrophic denitrification have many limitations. Recently, the simultaneous heterotrophic nitrification-aerobic denitrification (HN-AD) process has received increasing attention. Thus, the possibility of the simultaneous removal of bisphenols and NH4+-N via HN-AD was investigated. RESULTS A bisphenols-degrading bacterial consortium was enriched and capable of degrading 50 mg L−1 bisphenol A, 300 mg L−1 4,4-dihydroxybenzophenone, 375 mg L−1 bisphenol F (BPF) and 10 mg L−1 bis(4-hydroxyphenyl)sulfide under aerobic conditions. Further studies showed that the bacterial consortium could completely degrade 300 mg L−1 BPF and remove NH4+-N at 35 °C with 150 rpm at the C/N ratio of over 10. Moreover, BPF mineralization and NH4+-N reduction to N2 were observed. Clone library analysis indicated that Salmonella enterica, Enterobacter, Citrobacter and Pseudomonas could cooperate to degrade BPF and reduce NH4+-N to N2. Among these species, the isolated Pseudomonas sp. HS-2 was capable of simultaneous BPF degradation and NH4+-N removal via HN-AD. CONCLUSION The experimental results demonstrated that the enriched bacterial consortium and the isolated strain HS-2 could simultaneously remove BPF and NH4+-N via HN-AD, indicating that this is a potential way for the treatment of wastewaters containing these compounds. © 2016 Society of Chemical Industry
- Subjects
BISPHENOLS; NITRIFICATION kinetics; SEWAGE purification; BACTERIAL antigens; SALMONELLA enterica
- Publication
Journal of Chemical Technology & Biotechnology, 2017, Vol 92, Issue 4, p854
- ISSN
0268-2575
- Publication type
Article
- DOI
10.1002/jctb.5069