Insights into Nitrous Oxide Mitigation Strategies in Wastewater Treatment and Challenges for Wider Implementation

2021 ◽  
Author(s):  
Haoran Duan ◽  
Yingfen Zhao ◽  
Konrad Koch ◽  
George F. Wells ◽  
Min Zheng ◽  
...  
Keyword(s):  
Nitrous Oxide ◽  
Wastewater Treatment ◽  
Mitigation Strategies ◽  
Nitrous Oxide Mitigation

scholarly journals Nitrous oxide emissions during microalgae-based wastewater treatment: current state of the art and implication for greenhouse gases budgeting

2020 ◽  
Vol 82 (6) ◽  
pp. 1025-1030
Author(s):  
Maxence Plouviez ◽  
Benoit Guieysse
Keyword(s):  
Nitrous Oxide ◽  
Wastewater Treatment ◽  
Mitigation Strategies ◽  
High Rate ◽  
Nitrous Oxide Emissions ◽  
Future Research ◽  
N2o Emissions ◽  
Nitrogen And Phosphorus ◽  
Intergovernmental Panel ◽  
Aerobic Wastewater Treatment

Abstract Microalgae can synthesise the ozone depleting pollutant and greenhouse gas nitrous oxide (N2O). Consequently, significant N2O emissions have been recorded during real wastewater treatment in high rate algal ponds (HRAPs). While data scarcity and variability prevent meaningful assessment, the magnitude reported (0.13–0.57% of the influent nitrogen load) is within the range reported by the Intergovernmental Panel on Climate Change (IPCC) for direct N2O emissions during centralised aerobic wastewater treatment (0.016–4.5% of the influent nitrogen load). Critically, the ability of microalgae to synthesise N2O challenges the IPCC's broad view that bacterial denitrification and nitrification are the only major cause of N2O emissions from wastewater plants and aquatic environments receiving nitrogen from wastewater effluents. Significant N2O emissions have indeed been repeatedly detected from eutrophic water bodies and wastewater discharge contributes to eutrophication via the release of nitrogen and phosphorus. Considering the complex interplays between nitrogen and phosphorus supply, microalgal growth, and microalgal N2O synthesis, further research must urgently seek to better quantify N2O emissions from microalgae-based wastewater systems and eutrophic ecosystems receiving wastewater. This future research will ultimately improve the prediction of N2O emissions from wastewater treatment in national inventories and may therefore affect the prioritisation of mitigation strategies.

Modeling nitrous oxide mitigation potential of enhanced efficiency nitrogen fertilizers from agricultural systems

2021 ◽  
pp. 149342
Author(s):  
Ram B. Gurung ◽  
Stephen M. Ogle ◽  
F. Jay Breidt ◽  
William J. Parton ◽  
Stephen J. Del Grosso ◽  
...  
Keyword(s):  
Nitrous Oxide ◽  
Nitrogen Fertilizers ◽  
Agricultural Systems ◽  
Mitigation Potential ◽  
Nitrous Oxide Mitigation

scholarly journals Nitrous oxide emissions from biofilm processes for wastewater treatment

2018 ◽  
Vol 102 (22) ◽  
pp. 9815-9829 ◽  
Author(s):  
Fabrizio Sabba ◽  
Akihiko Terada ◽  
George Wells ◽  
Barth F. Smets ◽  
Robert Nerenberg
Keyword(s):  
Nitrous Oxide ◽  
Wastewater Treatment ◽  
Nitrous Oxide Emissions

Assessing potential impacts of phosphate precipitation on nitrous oxide emissions and the carbon footprint of wastewater treatment plants

2018 ◽  
Vol 40 (16) ◽  
pp. 2107-2113 ◽  
Author(s):  
Pascal Kosse ◽  
Manfred Lübken ◽  
Torsten C. Schmidt ◽  
Ruben-Laurids Lange ◽  
Marc Wichern
Keyword(s):  
Nitrous Oxide ◽  
Wastewater Treatment ◽  
Carbon Footprint ◽  
Wastewater Treatment Plants ◽  
Nitrous Oxide Emissions

scholarly journals Nitrous oxide emissions from an intermittent aeration activated sludge system of an urban wastewater treatment plant

Química Nova ◽  
2013 ◽  
Vol 36 (1) ◽  
pp. 16-20 ◽  
Author(s):  
William Z. de Mello ◽  
Renato P. Ribeiro ◽  
Ariane C. Brotto ◽  
Débora C. Kligerman ◽  
Andrezza de S. Piccoli ◽  
...  
Keyword(s):  
Nitrous Oxide ◽  
Wastewater Treatment ◽  
Activated Sludge ◽  
Wastewater Treatment Plant ◽  
Treatment Plant ◽  
Nitrous Oxide Emissions ◽  
Intermittent Aeration ◽  
Urban Wastewater ◽  
Activated Sludge System ◽  
Urban Wastewater Treatment
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