Heterotrophic nitrification and aerobic denitrification at low temperature by a newly isolated bacterium, Acinetobacter sp. HA2

Yao, Shuo; Ni, Jinren; Ma, Tao; Li, Can

doi:10.1016/j.biortech.2013.03.189

Cited by 250 publications

(71 citation statements)

References 32 publications

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“…Microalgae have the ability to assimilate inorganic nitrogen and phosphorus down to very low concentrations (e.g., less than 0.5 and 0.03 mg L À1 for TN and TP, respectively) (Boelee et al, 2011;Renuka et al, 2013;Liu and Vyverman, 2015), while bacteria can remove nutrients via assimilation, anaerobic ammonia oxidation, nitrification and denitrification for nitrogen (Yao et al, 2013;Fitzgerald et al, 2015) and regular and luxury uptake of phosphorus (Schmidt et al, 2016).…”

Section: Conventional Technologies Disadvantages Referencesmentioning

confidence: 99%

“…The optimum temperature and pH typically ranges from 15 to over 35°C and 3 to 9, respectively (Markou and Georgakakis, 2011;Breuer et al, 2013). Some bacterial groups such as Achromobacteria, Alcaligenes, Bacillus, Hydrogenophaga and Pseudomonas can carry out heterotrophic nitrification and aerobic denitrification, converting ammonium ions to nitrogen aerobically (Yao et al, 2013;Chen et al, 2015). Polyphosphate (polyP) accumulating bacteria such as Accumulibacter and Pseudomonas are capable of taking up large amounts of phosphorus aerobically and storing it as intracellular polyphosphate (Oehmen et al, 2007;Carvalheira et al, 2014).…”

Section: Microorganism Selection and Consortium Constructionmentioning

confidence: 99%

“…A high C/N ratio can induce a high abundance of heterotrophic bacteria (Michaud et al, 2014), while a low N/P ratio may facilitate the dominance of microalgal species with a higher affinity for nitrogen (Liu and Vyverman, 2015). The abundance and activity of bacteria are sensitive to DO levels, especially those relevant to ammonia oxidation, nitrification and denitrification, which have strict requirement for aerobic or anaerobic conditions (Yao et al, 2013;Fitzgerald et al, 2015).…”

Section: Influence Of Aquatic Environmental Conditions On Consortium mentioning

confidence: 99%

“…However, in the last few decades, more and more anaerobic ammonium oxidizing bacteria (Anammox, Fig. 3, reaction 6) and aerobic denitrifying bacteria (ADB) have been found, which enabled a straightforward nitrogen removal under complete aerobic or anaerobic conditions (Yao et al, 2013). For instance, Candidatus brocadia anammoxidans is capable of anaerobically oxidizing ammonium into N 2 with the anammox enzyme hydroxylamine oxidoreductase (Jetten et al, 2001).…”

Section: Nitrogen Removal Pathwaysmentioning

confidence: 99%

See 3 more Smart Citations

Advanced nutrient removal from surface water by a consortium of attached microalgae and bacteria: A review

Liu

et al. 2017

Bioresource Technology

249

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Section: Conventional Technologies Disadvantages Referencesmentioning

confidence: 99%

Section: Microorganism Selection and Consortium Constructionmentioning

confidence: 99%

Section: Influence Of Aquatic Environmental Conditions On Consortium mentioning

confidence: 99%

Section: Nitrogen Removal Pathwaysmentioning

confidence: 99%

See 2 more Smart Citations

Advanced nutrient removal from surface water by a consortium of attached microalgae and bacteria: A review

Liu

et al. 2017

Bioresource Technology

249

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“…Denitrification is usually considered as an anaerobic process. However, investigations have demonstrated that denitrification also take place in an aerobic environment, i.e., canals, ponds, soils, and activated sludge [40,41]. Specific bacteria [23,29] as well as some fungi have also been isolated those are able to carry out denitrification under aerobic conditions [42].…”

Section: Nitrogen Removalmentioning

confidence: 99%

Removal of Nitrogen and COD from Reclaimed Water during Long-Term Simulated Soil Aquifer Treatment System under Different Hydraulic Conditions

Pan

Xiong

Huang

2017

Water

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Abstract:Reclaimed water is an important supplementary source for fresh water. Purification is necessary prior to utilization in order to minimize the pollution and human-health risk. A three-year experiment was carried out to study the removal of nitrogen and organics through a simulated soil aquifer treatment (SAT) system under continuous wetting and wetting/drying conditions. The removal performance of nitrogen and chemical oxygen demand (COD) was improved in the wetting/drying column. The average removal efficiencies of the three years were 51% and 78% for the NO 3 -N, 41% and 51% for the NH 4 -N, and 40% and 50% for the COD in the continuous wetting and wetting/drying columns. Nitrogen and COD removal mainly took place within the top 20 cm of the columns, which was highly correlated with the distribution of microorganisms. The amount of microorganisms was also positively correlated with the content of organic matter and dissolved oxygen (DO) in both soil columns. NO 3 -N can be removed effectively via aerobic denitrifying bacteria as the DO concentration was 3-6 mg/L. DO and NO 3 -N were simultaneously reduced as the electron acceptors for COD degradation, and DO only accounted for 40% of total electron acceptor in COD degradation for the continuous wetting column. Nitrogen and COD can be effectively and steadily removed from reclaimed water during the long-term operation of a SAT system.

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Optimization, purification, and characterization of hydroxylamine oxidoreductase from Acinetobacter sp. Y1

Liu

Yuan

Liu

2019

Biotech and App Biochem

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Hydroxylamine oxidoreductase (HAO) is a key enzyme involved in ammonium removal pathway. To further study the enzyme, HAO was purified from heterotrophic nitrifier Acinetobacter sp. Y1 and its property was investigated. Results of single-factor experiments showed that the optimal carbon source, nitrogen source, and C/N ratio were trisodium citrate, ammonium sulfate, and 14, respectively, with incubation time of 16 H. DEAE Sefinose TM FF anion-exchange chromatography was used to purify HAO, followed by Sefinose TM CL-6B gel filtration chromatography. SDS-PAGE revealed that a 47 kDa enzyme was purified successfully, with a purification fold of 7.32 and a recovery rate of 19.40%. The optimized enzyme activity of purified HAO was tested at pH 8.0 and 30 • C. The results showed that the activity was increased by 43.78% and 25.64% in the presence of 1 mM Fe 2+ and Fe 3+ , respectively. HAO activity was increased with the increase of Na + and K + , Mn 2+ , Zn 2+ , Cu 2+ , Ca 2+ , Ba 2+ inhibited the HAO activity at three concentrations. In addition, HAO activity was activated by ethylenediaminetetraacetic acid at 0.4 mM, and a negative effect arose as the dose increased.

show abstract

Heterotrophic nitrification and aerobic denitrification at low temperature by a newly isolated bacterium, Acinetobacter sp. HA2

Cited by 250 publications

References 32 publications

Advanced nutrient removal from surface water by a consortium of attached microalgae and bacteria: A review

Advanced nutrient removal from surface water by a consortium of attached microalgae and bacteria: A review

Removal of Nitrogen and COD from Reclaimed Water during Long-Term Simulated Soil Aquifer Treatment System under Different Hydraulic Conditions

Optimization, purification, and characterization of hydroxylamine oxidoreductase from Acinetobacter sp. Y1

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