Competition between heterotrophic and autotrophic nitrifiers for ammonia in chemostat cultures

VANNIEL, E; ARTS, P; WESSELINK, B; ROBERTSON, L; Kuenen, J.G.

doi:10.1016/0378-1097(93)90006-n

Cited by 36 publications

(23 citation statements)

References 15 publications

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“…The increasing bioavailability of added organic C in the OM treatment promoted the growth of heterotrophic bacteria and enhanced microbial biomass C (Table 1). This, in turn, decreased the magnitude of NH 4 + available to foster the growth and diversity of AOB (Fauci and Dick 1994) since AOB compete poorly for ammonia compared to heterotrophic bacteria (Van Niel et al 1993). In contrast, the deficiency of K in the NP treatment and P in the NK treatment limited crop growth and reduced plant uptake of N from soils (Qin et al 1998), resulting in a greater availability of inorganic N for the growth of AOB than in the OM and NPK treatments (Table 1).…”

Section: Effect Of Organic Manure and Mineral Fertilizer On N 2 O Promentioning

confidence: 99%

Impact of Long-Term Application of Fertilizers on N2O and NO Production Potential in an Intensively Cultivated Sandy Loam Soil

Ding

Yagi

Cai

et al. 2010

Water Air Soil Pollut

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Literature reports on N 2 O and NO emissions from organic and mineral agricultural soil amended with N-containing fertilizers have reached contradictory conclusions. To understand the influence of organic manure (OM) and chemical fertilizer application on N 2 O and NO emissions, we conducted laboratory incubation experiments on an agricultural sandy loam soil exposed to different long-term fertilization practices. The fertilizer treatments were initiated in 1989 at the Fengqiu State Key Agroecological Experimental Station and included a control without fertilizer (CK), OM, mineral NPK fertilizer (NPK), mineral NP fertilizer (NP), and mineral NK fertilizer (NK). The proportion of N emitted as NO and N 2 O varied considerably among fertilizer treatments, ranging from 0.83% to 2.50% as NO and from 0.08% to 0.36% as N 2 O. Cumulative NO emission was highest in the CK treatment after NH 4 + -N was added at a rate of 200 mg N kg −1 soil during the 612-h incubation period, whereas the longterm application of fertilizers significantly reduced NO emission by 54-67%. In contrast, the long-term application of NPK fertilizer and OM significantly enhanced N 2 O emission by 95.6% and 253%, respectively, compared to CK conditions. The addition of NP fertilizer (no K) significantly reduced N 2 O emission by 25.5%, whereas applications of NK fertilizer (no P) had no effect. The difference among the N-fertilized treatments was due probably to discrepancies in the N 2 O production potential of the dominant ammoniaoxidizing bacteria (AOB) species rather than AOB abundance. The ratio of NO/N 2 O was approximately 24 in the CK treatment, significantly higher than those in the N-fertilized treatments (3-11), and it decreased with increasing N 2 O production potential in Nfertilized treatments. Our data suggests that the shift in the dominant AOB species might produce reciprocal change in cumulative NO and N 2 O emissions.

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Section: Effect Of Organic Manure and Mineral Fertilizer On N 2 O Promentioning

confidence: 99%

Impact of Long-Term Application of Fertilizers on N2O and NO Production Potential in an Intensively Cultivated Sandy Loam Soil

Ding

Yagi

Cai

et al. 2010

Water Air Soil Pollut

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“…Moreover, an evident increment of N 2 O generation was observed at C:N 15, and the N 2 O releasing factor shot up to 0.50‰. This observation was distinct from the theory that the ratio of N 2 O production during HNAD was large in the media with low heterotrophic nitrification rate, but in line with the result that C:N >10 could lead to the increase of N 2 O emissions …”

Section: Resultsmentioning

confidence: 54%

Kinetic characteristics and N₂O production of a heterotrophic nitrifying bacterium Pseudomonas putida YH capable of tolerating adverse environmental conditions

Liu

Wang

Xiao

et al. 2019

J of Chemical Tech & Biotech

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BACKGROUND Heterotrophic nitrifying bacteria (HNB) have rapid growth rate, high activity and strong anti‐shock ability. These attributes are advantageous in engineering applications, yet the use of HNB is restricted by lack of clarity about the kinetics and metabolic mechanisms involved. Thus, nitrogen conversion characteristics, kinetics and N2O production of the HNB Pseudomonas putida YH were evaluated. RESULTS Strain YH exhibited superior heterotrophic nitrification‐aerobic denitrification (HNAD) ability in treating nitrogenous wastewater, with maximum removal rates of 10.07, 8.86 and 8.78 mg L−1 h−1 for NH4+–N, NO3−–N and NO2−–N, respectively. Mass balance analysis demonstrated that the removed TN was mainly due to bacterial assimilation (53–55%) and conversion into gaseous N2 (34–39%), instead of nitrification intermediate accumulation and N2O emission. In addition, the kinetics of nitrogen degradation and cellular growth of strain YH exactly conformed to the modified Gompertz equation and the Logistic equation, respectively. Moreover, strain YH showed excellent adaptability to variations of temperature, pH, C:N ratio and initial NH4+–N concentration in terms of nitrogen removal and N2O emission. The highest NH4+–N removal rate was obtained at pH 7.0, temperature 30 °C and C:N ratio of 15. Furthermore, the heterotrophic nitrification ability was just partially deteriorated after the addition of inhibitors, which further proved the multiple metabolic pathways of heterotrophic nitrification by strain YH. CONCLUSION The results demonstrated that strain YH exhibited excellent abilities of HNAD, N2O emission control and tolerance to adverse conditions, indicating that strain YH can be an effective candidate for treating nitrogenous wastewater without secondary pollution. © 2019 Society of Chemical Industry

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“…The HBC does not involve in the formation of the said nitrogenous compounds. The formation of these two compounds during the reaction unequivocally suggests HN [10,24]. During HN, the ammonia (NH 3 ) is converted finally to NO À 3 .…”

Section: Variation Of Ammonium Sulfate As Nitrogen Sourcementioning

confidence: 97%

NH₃and COD removal from wastewater using biological process: kinetic with optimization studies

Mohanty

Ray

Yadav

et al. 2013

Desalination and Water Treatment

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A B S T R A C TStudies on heterotrophic biomass conversion (HBC) process were carried out for the removal of N-NH 3 and organic carbon from wastewater. Ammonium sulfate and glucose were used as nitrogen and organic sources, respectively. A range of parameters were studied such as time, concentration variations of N-NH 3 , and organic nutrients keeping the biomass (total volatile suspended solids, TVSS) concentration invariable in all the cases. The kinetics followed dual rates, i.e. an initial faster phase, followed by the slower one. The rates of N-NH 3, and chemical oxygen demand (COD) removal depended on their initial concentrations. The consumption of N-NH 3 and COD followed first order kinetics. The unified rate equation was also established. Two other kinetic models, such as Monod and diffusion, were studied. The pH during the HBC process showed a decreasing trend. Other parameters studied were: N-NO À 3 , N 2 O, N-NO À 2 , and DO. A part of N-NH 3 utilized for emission of N 2 O may be due to heterotrophic nitrification (HN). Statistical studies were carried out such as analyses of variance (ANOVA), multi linear regression analysis and principal component analysis (MLRA), and pricipal component analsis (PCA). Optimization studies were carried out using response surface modeling (RSM) to maximize the removal efficiency of N-NH 3 and COD, minimizing the N-N 2 O emissions, along with maximizing the TVSS production simultaneously.

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Competition between heterotrophic and autotrophic nitrifiers for ammonia in chemostat cultures

Cited by 36 publications

References 15 publications

Impact of Long-Term Application of Fertilizers on N2O and NO Production Potential in an Intensively Cultivated Sandy Loam Soil

Impact of Long-Term Application of Fertilizers on N2O and NO Production Potential in an Intensively Cultivated Sandy Loam Soil

Kinetic characteristics and N₂O production of a heterotrophic nitrifying bacterium Pseudomonas putida YH capable of tolerating adverse environmental conditions

NH₃and COD removal from wastewater using biological process: kinetic with optimization studies

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Competition between heterotrophic and autotrophic nitrifiers for ammonia in chemostat cultures

Cited by 36 publications

References 15 publications

Impact of Long-Term Application of Fertilizers on N2O and NO Production Potential in an Intensively Cultivated Sandy Loam Soil

Impact of Long-Term Application of Fertilizers on N2O and NO Production Potential in an Intensively Cultivated Sandy Loam Soil

Kinetic characteristics and N2O production of a heterotrophic nitrifying bacterium Pseudomonas putida YH capable of tolerating adverse environmental conditions

NH3and COD removal from wastewater using biological process: kinetic with optimization studies

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Kinetic characteristics and N₂O production of a heterotrophic nitrifying bacterium Pseudomonas putida YH capable of tolerating adverse environmental conditions

NH₃and COD removal from wastewater using biological process: kinetic with optimization studies