Influence mechanism of C/N ratio on heterotrophic nitrification- aerobic denitrification process

Gu, Xinchen; Leng, Juntong; Zhu, Jitao; Zhang, Kai; Zhao, Jianqiang; Wu, Pei Ying; Xing, Qingyi; Tang, Kejing; Li, Xiaoling; Hu, Bo

doi:10.1016/j.biortech.2021.126116

Cited by 103 publications

(20 citation statements)

References 46 publications

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“…For instance, Gu et al. reported that the increase in the C/N ratio enhanced the NADH/NAD(+) (nicotinamide adenine dinucleotide reduced form/nicotinamide adenine dinucleotide) ratio, NADH concentration, and enzymatic activities of Acinetobacter [ 53 ]. Shi et al.…”

Section: Resultsmentioning

confidence: 99%

Ecological filter walls for efficient pollutant removal from urban surface water

Liao,

Qiu,

Tian

et al. 2024

Environmental Science and Ecotechnology

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Section: Resultsmentioning

confidence: 99%

Ecological filter walls for efficient pollutant removal from urban surface water

Liao,

Qiu,

Tian

et al. 2024

Environmental Science and Ecotechnology

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“…Five media were used in this study, namely Luria Bertani (LB) medium, heterotrophic nitrification medium (HNM), nitrate mediated aerobic denitrification medium (ADM), nitrite mediated aerobic denitrification medium (NADM), and simultaneous nitrification-denitrification medium (SNDM). Their composition with an initial TN content of 50 mg/L was presented in Table 1 (Gu et al, 2022). Both 1 mol/L HCl and NaOH solution were used to control the initial pH values of the media to 7.00 ± 0.20.…”

Section: Mediummentioning

confidence: 99%

Simultaneous nitrogen removal via heterotrophic nitrification and aerobic denitrification by a novel Lysinibacillus fusiformis B301

Zhou

et al. 2023

Water Environment Research

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Simultaneous nitrogen removal via heterotrophic nitrification and aerobic denitrification (HN-AD) has received widespread attention in biological treatment of wastewater. This study reported a novel Lysinibacillus fusiformis B301 strain, which effectively removed nitrogenous pollutants via HN-AD in one aerobic reactor with no nitrite accumulated. It exhibited the optimal nitrogen removal efficiency under 30 C, citrate as the carbon source and C/N ratio of 15. The maximum nitrogen removal rates were up to 2.11 mgNH 4 + -N/(LÁh), 1.62 mgNO 3 À -N/(LÁh), and 1.41 mgNO 2 À -N/(LÁh), respectively, when ammonium, nitrate, and nitrite were employed as the only nitrogen source under aerobic conditions. Ammonium nitrogen was preferentially consumed via HN-AD in the coexistence of three nitrogen species, and the removal efficiencies of total nitrogen were up to 94.26%. Nitrogen balance analysis suggested that 83.25% of ammonium was converted to gaseous nitrogen.The HD-AD pathway catalyzed by L. fusiformissupported by the results of key denitrifying enzymatic activities. Practitioner Points:• The novel Lysinibacillus fusiformis B301 exhibited the outstanding HN-AD ability.• The novel Lysinibacillus fusiformis B301 simultaneously removed multiple nitrogen species.• No nitrite accumulated during the HN-AD process.• Five key denitrifying enzymes were involved in the HN-AD process.• Ammonium nitrogen (83.25%) was converted to gaseous nitrogen by the novel strain.

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“…A similar process has been observed in the presence of feammox [ 2 , 3 ] or nitrifying bacteria, even though the mechanism is still mostly unknown in this latter case [ [4] , [5] , [6] , [7] , [8] , [9] ]. However, the electrical stimulation of heterotrophic nitrifying microorganisms has not been evaluated yet [ 10 , 11 ]. The most studied heterotrophic nitrifier is Alcaligenes [ 12 , 13 ].…”

Section: Introductionmentioning

confidence: 99%

Direct ammonium oxidation to nitrogen gas (Dirammox) in Alcaligenes strain HO-1: The electrode role

Pous¹,

Bañeras²,

Corvini³

et al. 2023

Environmental Science and Ecotechnology

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Influence mechanism of C/N ratio on heterotrophic nitrification- aerobic denitrification process

Cited by 103 publications

References 46 publications

Ecological filter walls for efficient pollutant removal from urban surface water

Ecological filter walls for efficient pollutant removal from urban surface water

Simultaneous nitrogen removal via heterotrophic nitrification and aerobic denitrification by a novel Lysinibacillus fusiformis B301

Direct ammonium oxidation to nitrogen gas (Dirammox) in Alcaligenes strain HO-1: The electrode role

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