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Updated: Aug 7, 2026
08:25
Measuring Nitrite and Nitrate, Metabolites in the Nitric Oxide Pathway, in Biological Materials using the Chemiluminescence Method
Published on: December 25, 2016
Nitrate and nitrite injection during municipal solid waste anaerobic biodegradation
Vassilia Vigneron1, Marie Ponthieu, Giulia Barina
1Cemagref-HBAN, parc de Tourvoie, BP 44, 92163 Antony cedex, France.
Waste Management (New York, N.Y.)
|June 24, 2006
Summary
Nitrified leachate recirculation in landfills shows potential for sustainable waste management. However, careful examination is needed due to potential inhibition during the acidogenic phase, especially with high sulfur content.
Area of Science:
- Environmental Science
- Microbiology
- Waste Management
Background:
- Nitrified leachate recirculation is a proposed sustainable landfill management strategy.
- Understanding nitrogen transformation pathways is crucial for optimizing this process.
Purpose of the Study:
- To monitor nitrogen-oxides reduction reactions during municipal solid waste biodegradation with nitrified leachate recirculation.
- To investigate the impact of different waste degradation phases and chemical conditions on these reactions.
Main Methods:
- Four test reactors were used, with nitrate or nitrite added (250 mg N-NO(x)(-)L(-1)).
- Nitrogen-oxides reduction reactions, volatile fatty acids (VFA), sulphate, ammonium, H(2)S, N(2), and NO concentrations were monitored.
- Statistical analysis was performed on the collected data.
Main Results:
- Denitrification was the primary nitrogen reduction pathway, occurring as heterotrophic (acidogenic phase) and autotrophic (methanogenic phase).
- Denitrification inhibition and ammonium production (dissimilatory nitrate reduction to ammonium - DNRA) were observed.
- High H(2)S concentration negatively impacted N(2) production, and NO production inhibited waste degradation.
Conclusions:
- Nitrified leachate recirculation requires careful consideration in full-scale landfills, particularly during the acidogenic phase or when high sulfur waste is present.
- Potential risks include denitrification inhibition, DNRA, and gas production (N(2), NO) affecting landfill stability and efficiency.
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