Evaluation of nitrification kinetics for treating ammonium nitrogen enriched wastewater in moving bed hybrid bioreactor

Bhattacharya, Ranjan; Mazumder, Debabrata

doi:10.1016/j.jece.2020.104589

Cited by 13 publications

(2 citation statements)

References 36 publications

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“…Using the Monod approaches and adjusting the similar Bhattachayra [56] methodology, the growth rates for the selected bacteria were obtained, registering a maximum value of 0.85 d-1 for Yersenia enterocolitica G23, a value slightly higher than that reported by Bhattachayra [57] and to the values (0.62-0.71) used by Mehrani [58] for the application in a model of nitrite oxidation in suspended growth wastewater treatment systems.…”

Section: Discussionmentioning

confidence: 85%

Nitrite-Oxidizing Bacterial Strains Isolated from Soils of Andean Ecosystems and Their Potential Use in Nitrogen Reduction

et al. 2023

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Nitrification is part of the nitrogen cycle that occurs naturally in ecosystems. It is related to the presence of microorganisms and their metabolism, especially bacteria, which are involved in oxidizing compounds such as NH4+ and NO2− to NO3−. In this study, we evaluated the nitrification potential in 12 bacteria strains that belong to the genera Aeromonas, Bacillus, Buttiauxella, Mycobacterium, Paenibacillus, Serratia, and Yersenia, which are part of the cultivable microbial community from soil in a native forest and pine forest in The Labrado area within the Machangara micro-watershed in the Andes located in the south of Ecuador. This investigation aims to identify heterotrophic and lithoautotrophic strains using specific culture media for ammonium oxidative (AOL-AOH) and nitrate oxidation bacteria (ONL-ONH). The formation of nitrifying halos in the culture media allowed the identification of 10 strains with nitrifying potential. Five strains were from the pine forest, four were isolated from the native forest, and one strain was shared between both forests. The Serratia and Yersinia genera have a high NO2− oxidation capacity. Their inoculation in synthetic water rich in nitrogenous products allowed us to determine 40% and 94% nitrite reduction percentages and cell retention times of 20 to 40 days. Our results are promising for their possible potential use in environmental bioremediation processes through inoculation in wastewater for the biological removal of nitrogenous compounds.

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Section: Discussionmentioning

confidence: 85%

Nitrite-Oxidizing Bacterial Strains Isolated from Soils of Andean Ecosystems and Their Potential Use in Nitrogen Reduction

et al. 2023

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“…The specific nitrification rate is commonly expressed by the multiplication of individual terms complexing the Monod-type expressions [43]. The used model was carried out with 10% of inoculum at 25 • C and 120 rpm, to maintain pH = 8, supplemented with insoluble CaCO 3 .…”

Section: Monod Kinetics Modelmentioning

confidence: 99%

Nitrification Process in a Nuclear Wastewater with High Load of Nitrogen, Uranium and Organic Matter under ORP Controlled

Venturini

Rossen²,

Paulo

2021

Water

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To produce nuclear fuels, it is necessary to convert uranium′s ore into UO2-ceramic grade, using several quantities of kerosene, methanol, nitric acid, ammonia, and, in low level, tributyl phosphate (TBP). Thus, the effluent generated by nuclear industries is one of the most toxic since it contains high concentrations of dangerous compounds. This paper explores biological parameters on real nuclear wastewater by the Monod model in an ORP controlled predicting the specific ammonia oxidation. Thermodynamic parameters were established using the Nernst equation to monitor Oxiders/Reductors relationship to obtain a correlation of these parameters to controlling and monitoring; that would allow technical operators to have better control of the nitrification process. The real nuclear effluent is formed by a mixture of two different lines of discharges, one composed of a high load of nitrogen, around 11,000 mg/L (N-NH4+-N-NO3−) and 600 mg/L Uranium, a second one, proceeds from uranium purification, containing TBP and COD that have to be removed. Bioprocesses were operated on real wastewater samples over 120 days under controlled ORP, as described by Nernst equations, which proved to be a robust tool to operate nitrification for larger periods with a very high load of nitrogen, uranium, and COD.

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Development of a Simplistic Mathematical Model for Simultaneous Nitrification and Denitrification in Moving Bed Bioreactor

Bhattacharya

Mazumder

2023

Environ Model Assess

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Evaluation of nitrification kinetics for treating ammonium nitrogen enriched wastewater in moving bed hybrid bioreactor

Cited by 13 publications

References 36 publications

Nitrite-Oxidizing Bacterial Strains Isolated from Soils of Andean Ecosystems and Their Potential Use in Nitrogen Reduction

Nitrite-Oxidizing Bacterial Strains Isolated from Soils of Andean Ecosystems and Their Potential Use in Nitrogen Reduction

Nitrification Process in a Nuclear Wastewater with High Load of Nitrogen, Uranium and Organic Matter under ORP Controlled

Development of a Simplistic Mathematical Model for Simultaneous Nitrification and Denitrification in Moving Bed Bioreactor

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