 The Contribution of Autotrophic Nitrogen Oxidizers to Global Nitrogen ConversionHui-Ping Chuang, Akiyoshi Ohashi and Hideki Harada A chapter in Recent Advances on Nitrification and Denitrification from IntechOpen Abstract: The accumulation of ammonium (NH4+-N) and nitrous oxide (N2O-N) in the environment is causing concern due to their ecological impacts and contribution to global warming. Autotrophic nitrogen oxidizers, including aerobic ammonium-oxidizing archaea and bacteria, anaerobic ammonium oxidizer and nitrite oxidizers, play a crucial role in the nitrogen cycle by facilitating the removal of nitrogenous residues from the environment. Nitrogen oxides (NOx) like nitrite (NO2--N) and nitrate (NO3--N) are produced as key immediate products during the conversion of NH4+-N or N2O-N. Additionally, these autotrophic microbes utilize carbon dioxide (CO2) for cell synthesis, thereby mitigating the greenhouse effect. Preliminary results pointed out that nitrogen oxidizers could effectively remove NH4+-N and NOx from sewage and wastewater systems at the loading rate lower than 0.5 kg N/m3-day. Moreover, this family could also reduce the greenhouse N2O-N through oxidizing pathway, attaining the maximum reduction of 25.2-fold the annual N2O production. Keywords: autotrophic nitrogen oxidizers; biological technologies; greenhouse effect; nitrogen cycle; sponge media (search for similar items in EconPapers) Downloads: (external link) Related works: Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text Persistent link: https://EconPapers.repec.org/RePEc:ito:pchaps:312895 DOI: 10.5772/intechopen.112709 Access Statistics for this chapter More chapters in Chapters from IntechOpen |
Is your work missing from RePEc? Here is how to contribute.
Questions or problems? Check the EconPapers FAQ or send mail to econpapers@oru.se.
EconPapers is hosted by the
School of Business at Örebro University.