Characterization of the anaerobic denitrification bacterium Acinetobacter sp. SZ28 and its application for groundwater treatment

Su, Jun feng; Zheng, Sheng chen; Huang, Ting; Ma, Fang; Shao, Si cheng; Yang, Shao Fei; Zhang, Li Na

doi:10.1016/j.biortech.2015.06.020

Cited by 78 publications

(21 citation statements)

References 33 publications

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“…Acinetobacter was found to be dominant in both mono-and co-digestion, although more dominant in most samples of co-digestion. According to Feng Su et al and Xu et al, 57,58 both Acinetobacter and Pseudomonas are capable of carrying out denitrification and nitrification conversion of nitrate and ammonia into nitrogen gas.…”

Section: Fos/tac Ratio Phmentioning

confidence: 99%

“…The presence of Acinetobacter and Pseudomonas may have contributed to the continuous decrease in biogas production during co-digestion. 57,58,66 Their presence signals the removal of nitrate from the digesters and during denitrification of nitrate to nitrogen gas, the intermediate nitrite is produced. According to Clarens et al, 66 the presence of nitrite (of about 0.18 mmol L −1 ) showed a higher inhibitory ability to methanogenesis.…”

Section: Taxonomic Diversity Of Archaeal Community On Monoand Co-digementioning

confidence: 99%

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Effects of organic loading rates on microbial communities and biogas production from water hyacinth: a case of mono‐ and co‐digestion

Nkuna

Roopnarain

Adeleke

2019

J of Chemical Tech & Biotech

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Background Anaerobic digestion is a microbial driven process, which results in biogas production. Although important, the relative abundance of microbial communities can be affected by disturbances such as feeding rates. In this study, the effects of irregular organic loading rates on anaerobic digestion of water hyacinth (mono‐ and co‐digestion) as well as on bacterial and archaeal communities were investigated. The process was conducted at different feeding stages during which the process stability, biogas production, composition and microbial community structure were monitored. Results Bacterial communities were more influenced by irregular organic loading rates in comparison with archaeal communities. Although microbial community shifts were observed in both mono‐ and co‐digestion, the shift was more prevalent in co‐digestion. Moreover, process stability was evidenced in some stages of mono‐digestion, where the FOS/TAC ratio was within the optimal range. However, for co‐digestion, the low FOS/TAC ratio showed process instability. Conclusion Overall, irregularity in organic loading rates affected the microbial community composition as well as their CH4 production. © 2018 Society of Chemical Industry

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Section: Fos/tac Ratio Phmentioning

confidence: 99%

Section: Taxonomic Diversity Of Archaeal Community On Monoand Co-digementioning

confidence: 99%

Effects of organic loading rates on microbial communities and biogas production from water hyacinth: a case of mono‐ and co‐digestion

Nkuna

Roopnarain

Adeleke

2019

J of Chemical Tech & Biotech

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“…Wu et al (2013) determined the optimal C/N ratio, temperature, and dissolved oxygen parameters for the denitrification activity of the aerobic denitrifier strain CP1. Most previous studies have primarily been single-factor experiments, but simultaneous changes in multiple environmental factors may impact nitrogen removal efficiency (Su et al, 2015). The conventional approach of assessing one factor at a time is not appropriate for this particular bioprocess due to potential interactions between independent variables.…”

Section: Introductionmentioning

confidence: 99%

“…The possibility of denitrification under aerobic conditions and the extent to which oxygen inhibits denitrification by bacteria are of interest from physiological, ecological, and economic perspectives (Su et al, 2015). Numerous aerobic denitrifiers have been isolated from wastewater treatment and nutrient-rich systems such as aquaculture ponds (Pai et al, 1999;Joo et al, 2006;.…”

Section: Introductionmentioning

confidence: 99%

“…The conventional approach of assessing one factor at a time is not appropriate for this particular bioprocess due to potential interactions between independent variables. To overcome this problem, a full or fractional factorial design coupled with response surface methodology (RSM) should be used (Su et al, 2015;Ghosh and Hallenbeck, 2010). RSM is a powerful statistical tool for designing experiments, building and analyzing models, evaluating the joint effects of several factors, and determining the optimal conditions for desired responses (Virkutyte et al, 2010;Xiao et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

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Nitrogen-removal efficiency of a novel aerobic denitrifying bacterium, Pseudomonas stutzeri strain ZF31, isolated from a drinking-water reservoir

Huang

Guo

Zhang

et al. 2015

Bioresource Technology

144

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Simultaneous removal of sulfur and nitrogen compounds with methane production from concentrated latex wastewater in two bioreactor zones of micro‐oxygen hybrid reactor

Su‐ungkavatin

Thongnueakhaeng

Chaiprasert

2019

J of Chemical Tech & Biotech

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BACKGROUND A micro‐oxygen hybrid reactor (MOHR), a two‐zone reactor with suspended sludge zone (SZ) and attached biofilm zone (AZ) at its lower and upper parts respectively, was applied to simultaneously remove sulfur and nitrogen compounds with methane production from concentrated latex wastewater with high concentrations of sulfate (1200 mg L−1) and ammonium (235 mg L−1). Microbial community structures coupled with microbial activities were analyzed and discussed for clarifying relationships of microorganisms in both zones of the MOHR. RESULTS The operating dissolved oxygen in the MOHR was controlled at 0.10–0.15 and 0.05 mg L−1 in the SZ and AZ respectively at various loading rates (LRs) and hydraulic retention times (HRTs). The average optimal overall performances of the MOHR for sulfate (SO42−), total Kjeldahl nitrogen (TKN) and chemical oxygen demand (COD) removal efficiencies were 90.3, 67.8 and 93.0% respectively at HRT 10 days. Elemental sulfur and nitrogen gas were evaluated as major end‐products at 90.2 and 67.9% respectively, with 0.27 L CH4 g−1 CODremoved of methane selectivity. The genera Desulfobulbus and Dongia as well as Thiobacillus denitrificans served as dominant microorganisms in biological sulfate removal. The largest abundance belonged to denitrifying microorganisms with nitrous oxide reductase (nosZ) as target gene. CONCLUSION The MOHR achieved high performance in simultaneous removal of sulfur and nitrogen compounds along with methane production at HRT 10 days. Microorganisms involved in sulfur and nitrogen compound removal processes were more prevalent in the SZ than in the AZ, whereas methanogenic activity was higher in the AZ than in the SZ. © 2019 Society of Chemical Industry

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Characterization of the anaerobic denitrification bacterium Acinetobacter sp. SZ28 and its application for groundwater treatment

Cited by 78 publications

References 33 publications

Effects of organic loading rates on microbial communities and biogas production from water hyacinth: a case of mono‐ and co‐digestion

Effects of organic loading rates on microbial communities and biogas production from water hyacinth: a case of mono‐ and co‐digestion

Nitrogen-removal efficiency of a novel aerobic denitrifying bacterium, Pseudomonas stutzeri strain ZF31, isolated from a drinking-water reservoir

Simultaneous removal of sulfur and nitrogen compounds with methane production from concentrated latex wastewater in two bioreactor zones of micro‐oxygen hybrid reactor

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