Nitrous oxide production during nitrification from organic solid waste under temperature and oxygen conditions

Landfill aeration can accelerate the biological degradation of organic waste and reduce methane production; however, it induces nitrous oxide (N2O), a potent greenhouse gas. Nitrification is one of the pathways of N2O generation as a by-product during aerobic condition. This study was initiated to d...

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Veröffentlicht in:Environmental technology. - 1993. - 37(2016), 22 vom: 15. Nov., Seite 2890-7
1. Verfasser: Nag, Mitali (VerfasserIn)
Weitere Verfasser: Shimaoka, Takayuki, Komiya, Teppei
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2016
Zugriff auf das übergeordnete Werk:Environmental technology
Schlagworte:Journal Article Nitrous oxide nitrification-denitrification oxygen concentration temperature Air Pollutants Solid Waste Nitrous Oxide K50XQU1029 Oxygen S88TT14065
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520 |a Landfill aeration can accelerate the biological degradation of organic waste and reduce methane production; however, it induces nitrous oxide (N2O), a potent greenhouse gas. Nitrification is one of the pathways of N2O generation as a by-product during aerobic condition. This study was initiated to demonstrate the features of N2O production rate from organic solid waste during nitrification under three different temperatures (20°C, 30°C, and 40°C) and three oxygen concentrations (5%, 10%, and 20%) with high moisture content and high substrates' concentration. The experiment was carried out by batch experiment using Erlenmeyer flasks incubated in a shaking water bath for 72 h. A duplicate experiment was carried out in parallel, with addition of 100 Pa of acetylene as a nitrification inhibitor, to investigate nitrifiers' contribution to N2O production. The production rate of N2O ranged between 0.40 × 10(-3) and 1.14 × 10(-3) mg N/g-DM/h under the experimental conditions of this study. The rate of N2O production at 40°C was higher than at 20°C and 30°C. Nitrification was found to be the dominant pathway of N2O production. It was evaluated that optimization of O2 content is one of the crucial parameters in N2O production that may help to minimize greenhouse gas emissions and N turnover during aeration 
650 4 |a Journal Article 
650 4 |a Nitrous oxide 
650 4 |a nitrification-denitrification 
650 4 |a oxygen concentration 
650 4 |a temperature 
650 7 |a Air Pollutants  |2 NLM 
650 7 |a Solid Waste  |2 NLM 
650 7 |a Nitrous Oxide  |2 NLM 
650 7 |a K50XQU1029  |2 NLM 
650 7 |a Oxygen  |2 NLM 
650 7 |a S88TT14065  |2 NLM 
700 1 |a Shimaoka, Takayuki  |e verfasserin  |4 aut 
700 1 |a Komiya, Teppei  |e verfasserin  |4 aut 
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