Nitrogen removal characteristics of a heterotrophic nitrifier Acinetobacter junii YB and its potential application for the treatment of high-strength nitrogenous wastewater

Liu, Yang; Ren, Yong‐Xiang; Liang, Xian; Zhao, Siqi; Wang, Junping; Xia, Zhi-hong

doi:10.1016/j.biortech.2015.05.075

Cited by 126 publications

(38 citation statements)

References 31 publications

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“…(b)). Moreover, the napA gene has been confirmed in many aerobic denitrifiers including Pseudomonas stutzeri strain XL‐2, Acinetobacter junii YB and Vibrio diabolicus SF16 on the basis of PCR amplification. Thus, napA in strain ZN1 plays an indispensable role in the aerobic denitrification process.…”

Section: Resultsmentioning

confidence: 99%

Nitrogen removal by a metal‐resistant bacterium, Pseudomonas putida ZN1, capable of heterotrophic nitrification–aerobic denitrification

Zhang

Lyu

et al. 2018

J of Chemical Tech & Biotech

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BACKGROUND Bacteria capable of heterotrophic nitrification–aerobic denitrification have received increasing attention, and can achieve simultaneous nitrification and denitrification processes to accelerate nitrogen removal rate. However, heavy metals in industrial wastewater seriously affect the nitrogen removal by these bacteria. Thus, this work focused on the nitrogen removal ability of a metal‐resistant bacterium Pseudomonas putida ZN1. RESULTS ZN1 effectively removed ammonium, nitrate and nitrite with maximum removal efficiencies of 97.47%, 86.08% and 71.57%, and it also preferred to utilize ammonium during the simultaneous nitrification and denitrification process. The inhibitory effect of heavy metals on ammonium removal decreased in the order Ni2+ > Cr6+ > Zn2+ > Cu2+, and copB‐I was responsible for the higher copper tolerance of ZN1. The nitrogen removal pathway of ZN1 was proposed to be heterotrophic nitrification combined with aerobic denitrification through the nitrogen source utilization, gas detection, enzyme assay and gene amplification. CONCLUSION ZN1 exhibited excellent heterotrophic nitrification and aerobic denitrification capacity, and it effectively removed ammonium from wastewater containing the heavy metals Cu2+, Zn2+, Cr6+ and Ni2+. All results make strain ZN1 a promising candidate for future application in treating actual wastewater. © 2018 Society of Chemical Industry

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Section: Resultsmentioning

confidence: 99%

Nitrogen removal by a metal‐resistant bacterium, Pseudomonas putida ZN1, capable of heterotrophic nitrification–aerobic denitrification

Zhang

Lyu

et al. 2018

J of Chemical Tech & Biotech

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“…Representatives of the family Phyllobacteriaceae are a group of aerobic bacteria that include some rhizobia species capable of using various forms of nitrogen for growth (Mergaert and Swings, 2005) and have been identified in a marine filter (Michaud, 2007). Members of Acinetobacter genus have showed both heterotrophic nitrification and aerobic denitrification ability (Yang et al, 2015). The anaerobic conditions of the DBRs were not suitable for these bacteria but the environment in the RBC promoted their growth.…”

Section: Discussionmentioning

confidence: 99%

Bacterial community analysis of marine recirculating aquaculture system bioreactors for complete nitrogen removal established from a commercial inoculum

et al. 2019

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An experimental recirculating aquaculture system was constructed under ambient seawater conditions to compare microbial community diversity of nitrifying and denitrifying biofilters that were derived from a commercial inoculum used for aquarium applications. Next generation sequencing revealed distinct and diverse microbial communities in samples analyzed from the commercial inoculant and the denitrification and nitrification biofilters. In all samples, communities were represented by a few dominant operational taxonomic units (OTUs). Bacteria having the capacity to carry out ammonia and nitrite oxidation were more abundant in the nitrification biofilter. Similarly, the proportion of the bacterial taxa known to carry out heterotrophic and autotrophic denitrification and participate in sulfur cycling were found in the denitrification bioreactor, and likely originated from the ambient environmental water source. Our results indicated that environmental seawater can be a favorable enhancement to the bacterial consortium of recirculating aquaculture systems biofilters.

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“…The removal of ammonium nitrogen is often neglected. Recently, many bacteria have been found to be capable of HN‐AD, implying that NH 4 + ‐N in water can be completely removed under aerobic conditions. To reveal the ammonium removal ability of the enriched bacterial consortium, the effects of different carbon to nitrogen mass ratios on BPF degradation and ammonium removal were investigated when BPF was used as sole carbon source (Fig.…”

Section: Resultsmentioning

confidence: 99%

“…To date, many HN‐AD bacteria have been isolated and exhibit good performance for nitrogen removal under various conditions, even including low temperature or high salt condition . These HN‐AD bacteria generally remove nitrogen by using readily biodegradable carbon sources such as glucose, sodium acetate, sodium succinate, sodium citrate and corn flour . In fact, refractory aromatic hydrocarbon pollutants and nitrate/ammonia are commonly found in wastewaters .…”

Section: Introductionmentioning

confidence: 99%

Simultaneous bisphenol F degradation, heterotrophic nitrification and aerobic denitrification by a bacterial consortium

Lü

Weng

Wei

et al. 2016

J of Chemical Tech & Biotech

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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

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Nitrogen removal characteristics of a heterotrophic nitrifier Acinetobacter junii YB and its potential application for the treatment of high-strength nitrogenous wastewater

Cited by 126 publications

References 31 publications

Nitrogen removal by a metal‐resistant bacterium, Pseudomonas putida ZN1, capable of heterotrophic nitrification–aerobic denitrification

Nitrogen removal by a metal‐resistant bacterium, Pseudomonas putida ZN1, capable of heterotrophic nitrification–aerobic denitrification

Bacterial community analysis of marine recirculating aquaculture system bioreactors for complete nitrogen removal established from a commercial inoculum

Simultaneous bisphenol F degradation, heterotrophic nitrification and aerobic denitrification by a bacterial consortium

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