Denitrification
Denitrification is a microbially facilitated process where nitrate (NO3−) is reduced and ultimately produces molecular nitrogen (N2) through a series of intermediate gaseous nitrogen oxide products. Facultative anaerobic bacteria perform denitrification as a type of respiration that reduces oxidized forms of nitrogen in response to the oxidation of an electron donor such as organic matter. The preferred nitrogen electron acceptors in order of most to least thermodynamically favorable include nitrate (NO3−), nitrite (NO2−), nitric oxide (NO), nitrous oxide (N2O) finally resulting in the production of dinitrogen (N2) completing the nitrogen cycle. Denitrifying microbes require a very low oxygen concentration of …
WikipediaPublications
WHO: World Health Organization · 25 November 2024 English
vi, 19 p.
An advantage of also reducing N is that denitrification also occurs within the water body, releasing … tanks on land has the advantage of promoting denitrification, but planning should consider risks of groundwater …
FAO: Food and Agriculture Organization of the United Nations · 11 November 2024 English
Nitrous oxide, considered to be a super pollutant, is the third most important greenhouse gas and the most significant ozone-layer depleting substance emitted today. Its human-induced emissions, which primarily originate …
biodiversity (de Vries 2021). Nitrification and denitrification are the two key microbial processes controlling … microbial processes of nitrification and denitrification occurring below the surface (Manizza et al …
PIK: Potsdam-Institut fur Klimafolgenforschung · 7 November 2024 English
Biological nitrogen fixation (BNF) by symbiotic and free living bacteria is an important source of plant-available nitrogen (N) in terrestrial ecosystems supporting carbon (C) sequestration and food production worldwide. Dynamic …
losses from nitrification, volatili- sation, denitrification and leaching on agricultural land. Gen- erally … turnover) and N2O emissions from nitrification and denitrification. Table 2. N balance values for 2001 to 2010 … leaching and emissions (from volatilisation, denitrification, nitrification, fire and land-use change) are … Global Trends and Uncertainties in Terrestrial Denitrification and N2O Emissions, Philos. T. Roy. Soc. B, … Butterbach-Bahl, K.: Es- timating Global Terrestrial Denitrification from Measured N2O : (N2O + N2) Product Ratios …
ADB: Asian Development Bank · 6 November 2024 English
This brief shows how the People’s Republic of China (PRC) is scaling up its green finance ecosystem and explains why its banks should improve environmental information disclosure to boost transparency …
particularly important in measuring the benefits of denitrification projects 7 Reduced use of water Often reflects …
CPI: Climate Policy Initiative · 25 October 2024 English
Step 3: Clear and There is a direct link between A clear and logical link can be By financing these infrastructure direct link the project activities and articulated between project …
nitrogen pollution, and regionally specific denitrification rates); adoption of compliance measures • The …
PICES: North Pacific Marine Science Organization · 22 October 2024
The FUTURE symposium plans to review its past, assess the present, and discuss the future of FUTURE to better observations, improved awareness of mechanisms of change, and ultimately science for …
or final product during nitrification and denitrification processes. The East Sea (ES) is a semi-enclosed … and compositions involved in the nitrifier denitrification (the oxidation of NH3 to NO2– is followed by … the significant contribution of nitrifier denitrification to N2O production. This research is anticipated … and associated N2O emissions through both denitrification and nitrification processes. The spatial and … production pathways have changed from predominantly denitrification in the past toward significant production from …
EC: European Commission · 21 October 2024 English
This report delves into the intricate interplay between drivers, pressures and impacts on soil in the 32 Member States of the European Environment Agency (EEA), along with six cooperating countries …
(GHG). N2O is released from soils through denitrification, whose rate increases with N input (Butterbach-Bahl …
WBCSD: World Business Council for Sustainable Development · 21 October 2024 English
Friesland, a region in the north of the Netherlands, has a long tradition in agrifood production, with around half of its landmass used for agriculture.5 Dairy farming takes place mostly …
(such as in Friesland) The nitrification and denitrification process in soil and manure generally has lower …
EU: European Union · 21 October 2024 English
This report investigates the intricate interplay between drivers of changes in soil health and pressures and impacts on soil in the 32 European Environment Agency (EEA) member countries, along with …
(GHG). N2O is released from soils through denitrification, whose rate increases with N input (Butterbach-Bahl …
FOE: Friends of the Earth (USA) · 17 October 2024 English
Highsmith More broadly, the UN Guiding Principles on Business and Human Rights (UNGPs) detail the responsibility of all businesses to respect human rights and to provide remedy for any harms …
fertilizers with improved characteristics (less denitrification and leaching). • Require increased transparency …