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Updated: Mar 13, 2026

Estimating Sediment Denitrification Rates Using Cores and N2O Microsensors
Published on: December 6, 2018
Interaction of short-chain fatty acids carbon source on denitrification
Yue Chen1, Liang Guo1,2, Jiawen Zhang1
1a College of Environmental Science and Engineering , Ocean University of China , Qingdao , People's Republic of China.
Abstract:
Short-chain fatty acids (SCFAs) could be obtained from organic waste anaerobic digestion. The ability and interaction of different SCFAs on denitrification were investigated in this study. Two kinds of SCFAs (acetate and propionate with 5 different ratios) and 4 kinds of SCFAs (acetate, propionate, butyrate and valerate with 10 different ratios) were evaluated. Using acetate (Ac) and propionate (Pr) as carbon sources, the highest nitrate removal efficiency of 97.5% was obtained. When using the mixture of acetate (Ac), propionate (Pr), butyrate (Bu) and valerate (Va) as the carbon source, the highest nitrate removal efficiency obtained was 92.0%. The denitrification performance was affected significantly by different kinds and proportions of SCFAs. In addition, nitrite accumulation and chemical oxygen demand consumption for different contents of SCFAs were also analyzed.
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