Mixed nitrifying bacteria culture under different temperature dropping strategies: Nitrification performance, activity, and community

Chen, Maoxia; Chen, Yangwu; Dong, Shiyang; Lan, Shuhuan; Zhou, Houzhen; Tan, Zhouliang; Li, Xudong

doi:10.1016/j.chemosphere.2017.12.129

Cited by 52 publications

(10 citation statements)

References 53 publications

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“…It has been demonstrated that soil's physicochemical properties can be modified by organic fertilizer as a result of its comprehensive nutrients [8,9]. Moreover, the fertilizer efficiency of organic factors is more lasting when compared with under aerobic conditions, which can be absorbed by crops [23,24]. Accordingly, a pellucid explanation for the shifts in soil's prokaryotic communities under different fertilization regimes would contribute to a better understanding of the status of soil nutrient cycling.…”

Section: Introductionmentioning

confidence: 99%

Combined Application of Organic and Inorganic Nitrogen Fertilizers Affects Soil Prokaryotic Communities Compositions

Liu

Zhu

et al. 2020

Agronomy

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As a fundamental part of the soil ecosystem, prokaryotes are involved in the preservation of soil functions. However, little is known of how the combined application of long-term organic and inorganic nitrogen fertilizer affects the prokaryotic communities’ dynamics at a paddy field. A long-term positioning experiment initiated in 2013 with four treatments (NO: no N fertilizer, CN: 100% urea N with no organic fertilizer, PM: 80% urea N plus 20% N with pig manure, CM: 80% urea N plus 20% N with compost) were applied to detect the differential responses of soil physicochemical properties, and prokaryotic community structure and composition in different fertilization regimes. The results indicated that the long-term combined application of organic and inorganic nitrogen fertilizers altered the physicochemical properties to some extent and, simultaneously, established unique prokaryotic communities. In detail, the treatment of PM and CM significantly increased the content of soil organic carbon (SOC) and total nitrogen (TN) compared to NO. Moreover, a total of 31 indicator taxa were screened across the four treatments by LDA Effect Size (LEfSe) analysis following the principle of the greatest differences, which suggests that these indicator taxa were more sensitive to the fertilization. This research suggested that the combined application of long-term organic and inorganic nitrogen fertilizers not only contributed to the soil’s physicochemical properties but also changed the prokaryotic community composition.

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Section: Introductionmentioning

confidence: 99%

Combined Application of Organic and Inorganic Nitrogen Fertilizers Affects Soil Prokaryotic Communities Compositions

Liu

Zhu

et al. 2020

Agronomy

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“…The obtained results and the literature data indicate that the efficiency of nitrification depends on the temperature conditions. Many authors have also identified temperature as the main factor determining the metabolism of nitrifying bacteria, which inhibited nitrification [11]. In this study, the operation of a biofilter at 0 °C significantly (p < 0.05) decreased the nitrification efficiency compared with the control reactor in each series.…”

Section: Nitrification Efficiencymentioning

confidence: 60%

“…The simultaneous use of de-icing agents such as urea and easily decomposable organic compounds such as acetate or potassium formate at the airport might facilitate the effective denitrification process as well as the effective removal of organic compounds [1]. Temperature is one of the most important factors determining the metabolism of nitrifying bacteria [11,12]. The optimal temperature range of wastewater for nitrification is 25-28 • C, at which temperature, Nitrobacter sp.…”

Section: Introductionmentioning

confidence: 99%

Effectiveness of Nitrification and Denitrification Processes in Biofilters Treating Wastewater from De-Icing Airport Runways

Rodziewicz

Ostrowska

Janczukowicz

et al. 2019

Water

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The basic factors determining the efficiency of the removal of nitrogen and carbon compounds from airport wastewater containing de-icing agents are low temperature and the C/N ratio (carbon to nitrogen ratio). Biofilm reactors (biofilters) create better conditions for nitrification and denitrification than suspended biomass reactors. The scope of the study included determination of the influence of the C/N ratio in the wastewater on nitrification, denitrification and organic compound removal in biofilm reactors depending on the temperature. The experiment was performed in 24 circular laboratory biofilters with LECA (Light Expanded Clay Aggregates) filling. The study was divided into three series differing in organic carbon loading. In each series, carried out at the same hydraulic retention time, biofilters were operated at 25, 8, 4 or 0 °C. The study showed the effective removal of nitrogen compounds across a very wide temperature range. The applied filling and properly selected operating parameters of the reactors resulted in effective simultaneous nitrification and denitrification. The highest efficiency of nitrogen removal at 0 °C (34.57 ± 4.54%) was obtained at the C/N ratio of 0.5 gC/gN. The efficiency of denitrification (the lowest at the temperature of 0 °C) increased as the temperature and C/N ratio increased in the wastewater.

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“…1b), indicating that soil moisture is not the main factor causing differences in N 2 O emission between treatments. It is known that low temperature mainly influences microbial metabolic rates (Hulsen et al 2016), which leads to the deterioration of nitrification (Chen et al 2018;Delatolla et al 2012;Hoang et al 2014). In addition, low temperatures exert an influence on the amount of nitrifying bacteria (Siripong and Rittmann 2007).…”

Section: N 2 O Fluxmentioning

confidence: 99%

CO2, CH4 and N2O fluxes in an alpine meadow on the Tibetan Plateau as affected by N-addition and grazing exclusion

Luo

Wang

Zhang

et al. 2020

Nutr Cycl Agroecosyst

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Limited understanding of the effects of enhanced nitrogen (N) addition and grazing exclusion (E) on greenhouse gases fluxes (GHGs: CO 2 , CH 4 , and N 2 O) in grasslands constrains our ability to respond to the challenges of future climate change. In this study, we conducted a field experiment using a static closed opaque chamber to investigate the response of GHG fluxes to N addition (69 kg N ha-1 year-1 applied in 3 splits) and grazing exclusion in an alpine meadow on the Tibetan Plateau during the growing seasons from 2011 to 2013. Our results showed that winter grazing significantly raised soil temperature (ST), while grazing exclusion (E) had no effect on soil moisture (SM), and N fertilizer (F) had no effect on ST or SM. Aboveground biomass (AB) and root biomass (RB) were not significantly affected by E in 2011-2013 (p [ 0.05), but F significantly affected AB and RB (p \ 0.05). Compared with winter grazing, only E substantially reduced seasonal mean CO 2 emissions (by about 20.1%) during the experimental period. E did not significantly directly affect CH 4 uptake, whereas N addition reduced seasonal mean CH 4 uptake by about 6.5%, and N addition changed seasonal average absorption of N 2 O into an emission source. CO 2 flux is the major contributor to CO 2 equivalent emissions in this area. Our results indicate that exclosure from livestock grazing might be a promising measure to reduce CO 2 emissions, while enhanced N addition might reduce CH 4 uptake and increase N 2 O emission in the alpine meadow under future climate change.

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Mixed nitrifying bacteria culture under different temperature dropping strategies: Nitrification performance, activity, and community

Cited by 52 publications

References 53 publications

Combined Application of Organic and Inorganic Nitrogen Fertilizers Affects Soil Prokaryotic Communities Compositions

Combined Application of Organic and Inorganic Nitrogen Fertilizers Affects Soil Prokaryotic Communities Compositions

Effectiveness of Nitrification and Denitrification Processes in Biofilters Treating Wastewater from De-Icing Airport Runways

CO2, CH4 and N2O fluxes in an alpine meadow on the Tibetan Plateau as affected by N-addition and grazing exclusion

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