Nitrogen removal characteristics of a versatile heterotrophic nitrifying-aerobic denitrifying bacterium, Pseudomonas bauzanensis DN13-1, isolated from deep-sea sediment

Zhang, Mingxia; Li, Anzhang; Yao, Qing; Wu, Qingping; Zhu, Honghui

doi:10.1016/j.biortech.2019.122626

Cited by 80 publications

(28 citation statements)

References 38 publications

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“…At the genus level, as shown in Figure 5(b), the common genera (relative abundance higher than 1%) were Thauera (16.03%), Candidatus‐Competibacter (11.63%), UTCFX1 (4.53%), Denitratisoma (2.5%), Ellin6067 (2.38%), and Ottowia (1.46%), which together accounted for 38.5% of the total bacteria. In particular, the above species are denitrifying dominant genera (Deng et al, 2019; Li et al, 2020; Zhang et al, 2020). Obviously, unidentified Nitrospiraceae (NOB) Haliscomenobacter, Micropruina, and Ahniella had disappeared, and Thauera abundance had increased significantly, by 13%, compared with that of seed sludge.…”

Section: Resultsmentioning

confidence: 99%

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Applied research on aquatic macrophyte fermentation broth in SBR denitrification

Chen

2021

Water Environment Research

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In the traditional biological process for nitrogen removal, an insufficient carbon source is often the limiting factor. To solve this problem, reed fermentation broth was selected as the source of denitrification carbon for nitrogen removal in a SBR, and the influence of different C/N conditions on the denitrification and the characteristics of bacteria in the reactor were examined. Leaching experiments with reeds employed fluorescence excitation–emission spectrophotometry and revealed that the reed material had a high capacity for carbon release, the average dissolved organic carbon release content proportion was 11.3 mg/g, and the dissolved organic matter mainly consisted of humic acid‐like compounds. Using reed fermentation broth as an additional carbon source promoted the denitrification of wastewater by microbes. When reed fermentation broth was added at a C/N ratio of 6, the best nitrogen efficiency for nitrogen removal was 88.3–96.4%. Analyses of microbial diversity indicated that in the SBR reactor, the relative abundance of denitrifying bacteria at the genus level reached 38.5%. These results revealed that reed fermentation broth promoted the growth of anaerobic denitrifying bacteria and improved the efficiency of denitrification. The findings will contribute to a better understanding of the use of reed fermentation broth as an external carbon source that increases the efficiency for denitrification of wastewater. Practitioner Points Using fluorescence excitation−emission spectrophotometry and parallel factor analysis to evaluate the supply capacity of DOMs released from reed. Research the feasibility of reed fermented broth as external carbon source under the condition of extremely low carbon source. Provides theoretical guidance for deep denitrification in sewage treatment plant with SBR process.

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Section: Resultsmentioning

confidence: 99%

“…Lignin forms a protective layer around cellulose and hemicellulose, which affects the hydrolysis of cellulose and hemicellulose. Therefore, the content of lignin in plants affects their carbon release performance (Putrino et al, 2020; Zhang et al, 2020).…”

Section: Resultsmentioning

confidence: 99%

Applied research on aquatic macrophyte fermentation broth in SBR denitrification

Chen

2021

Water Environment Research

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“…( Dawood et al, 2020 ; Zheng et al, 2020 ), and Pseudomonas spp. ( Ruan et al, 2020 ; Zhang et al, 2020 ), especially Bacillus spp. ( Barman et al, 2018 ; Gao et al, 2018 ), have advantages to the enhancement of aquaculture water quality.…”

Section: Discussionmentioning

confidence: 99%

Multi-Strain Tropical Bacillus spp. as a Potential Probiotic Biocontrol Agent for Large-Scale Enhancement of Mariculture Water Quality

Ren

Guo

et al. 2021

Front. Microbiol.

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“…and P. fluorescens , respectively. Generally, Pseudomonas was one of the common strains used for ammonia and nitrite removal (Gui, Chen, & Ni, 2017; Sun et al, 2017; Zhang et al, 2020; Zhao, Cheng, Tan, An, & Guo, 2018) in aquaculture environment. Apart from that, Bacillus , Acinetobacter , Sphingomonas , and Halomonas were also reported to possess quite a few removal abilities (Fan et al, 2015; Hu et al, 2013; Huang, Pan, Lv, & Tang, 2017; Wang et al, 2015; Yun et al, 2019).…”

Section: Discussionmentioning

confidence: 99%

“…The probiotics, as a common biological method, owing to no residues and second-pollution, have therefore become the optimal way to improve the water quality safely and reliably in aquaculture. At present, nitrogen removal bacteria in aquaculture are mostly obtained from water, activated sludge (Qing et al, 2018) or sediments (Zhang, Li, Yao, Wu, & Zhu, 2020) in indigenous and other farming environment, whereas few investigations focused on the biofloc. However, the bioflocs, come from culture environment, are capable of removing nitrogen (Ebrahimi et al, 2020), and the bacteria contained in bioflocs have been proven to be able to absorb nitrogen (Kamilya et al, 2017), thus it may be more accessible for acquisition and adaptation of highly efficient nitrogen removal bacteria.…”

Section: Introductionmentioning

confidence: 99%

Characterization of Vibrio sp. strain AB15 and Pseudomonas fluorescens strain NB14 from the biofloc of shrimp culture ponds capable of high ammonia and nitrite removal efficiency

Dou

Chen

Pan

et al. 2021

J World Aquaculture Soc

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The development of intensive aquaculture industry has aggravated the dangers of ammonia and nitrite in aquatic ecosystems. Probiotics have been widely used to maintain and improve water quality by removal of ammonia and nitrite in aquaculture. In this study, two facultative anaerobic strains AB15 and NB14, capable of efficient ammonia and nitrite removal, were isolated from biofloc, which acts as a natural micro‐flora storeroom in shrimp culture ponds, and were identified as Vibrio sp. and Pseudomonas fluorescens, respectively. The removal efficiency of ammonia and nitrite by AB15 and NB14 was 96.8 and 89.6%, respectively. The optimum conditions of AB15 and NB14 were as follows: temperature (25°C vs. 30°C), salinity (25‰ both), initial pH (7.5 vs. 8.0), C/N ratio (15 vs. 10). The two strains had great performance on inhibiting the common pathogens (Vibrio harveyi, Vibrio splendidus, Vibrio anguillarum) in aquaculture at concentrations of 105–108 CFU/mL. Biosecurity assessment indicated that both AB15 and NB14 were harmless for survival and could be beneficial for the growth and immune enhancement of Litopenaeus vannamei. All results demonstrate that the two isolated strains have high promise for future applications of removing ammonia and nitrite and maintaining biosecurity in shrimp culture ponds.

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Nitrogen removal characteristics of a versatile heterotrophic nitrifying-aerobic denitrifying bacterium, Pseudomonas bauzanensis DN13-1, isolated from deep-sea sediment

Cited by 80 publications

References 38 publications

Applied research on aquatic macrophyte fermentation broth in SBR denitrification

Applied research on aquatic macrophyte fermentation broth in SBR denitrification

Multi-Strain Tropical Bacillus spp. as a Potential Probiotic Biocontrol Agent for Large-Scale Enhancement of Mariculture Water Quality

Characterization of Vibrio sp. strain AB15 and Pseudomonas fluorescens strain NB14 from the biofloc of shrimp culture ponds capable of high ammonia and nitrite removal efficiency

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