Abstract
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.
| Original language | English |
|---|---|
| Pages (from-to) | 2890-2897 |
| Number of pages | 8 |
| Journal | Environmental Technology (United Kingdom) |
| Volume | 37 |
| Issue number | 22 |
| DOIs | |
| Publication status | Published - Nov 16 2016 |
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All Science Journal Classification (ASJC) codes
- Environmental Chemistry
- Water Science and Technology
- Waste Management and Disposal
Cite this
Nitrous oxide production during nitrification from organic solid waste under temperature and oxygen conditions. / Nag, Mitali; Shimaoka, Takayuki; Komiya, Teppei.
In: Environmental Technology (United Kingdom), Vol. 37, No. 22, 16.11.2016, p. 2890-2897.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Nitrous oxide production during nitrification from organic solid waste under temperature and oxygen conditions
AU - Nag, Mitali
AU - Shimaoka, Takayuki
AU - Komiya, Teppei
PY - 2016/11/16
Y1 - 2016/11/16
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=84964596014&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84964596014&partnerID=8YFLogxK
U2 - 10.1080/09593330.2016.1168485
DO - 10.1080/09593330.2016.1168485
M3 - Article
C2 - 27028330
AN - SCOPUS:84964596014
VL - 37
SP - 2890
EP - 2897
JO - Environmental Technology (United Kingdom)
JF - Environmental Technology (United Kingdom)
SN - 0959-3330
IS - 22
ER -