Effect of Nitrogen Compounds and Organic Carbon Concentrations on N2O Emission during Denitrification 


Vol. 17,  No. 2, pp. 134-141, Jun.  2011


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  Abstract

The effects of the compounds and concentrations of nitrogenous electron acceptor, the ratio of electron donor/electron acceptor (C/N), and the complexity of electron donor on the emission of N2O during wastewater denitrification were quantitatively investigated in this study. The higher NO3- and NO2- concentrations, the more N2O emission was observed. NO2- has strong effect on N2O emission as it emitted more N2O than NO3-.50 mg/L of NO2- -N gave the highest conversion (9.3%) and yield (9.8%) of N2O while NO3- -N (50 mg/L) gave 5.6% conversion and 11.0% yield. Lower C/N ratio decreases nitrogen removal efficiency, but it increases the conversion of N2O because of the incomplete denitrification by the limited organic carbon. When real domestic wastewater is used as the electron donor of the denitrification, N2O emission is reduced to 1/10 of the emission when single carbon (acetate) is used. It is thought that multiple carbon source utilizes many denitrification pathways and it seems to be helpful for the reduction of N2O emission.

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  Cite this article

[IEEE Style]

K. DJ, K. H, K. Y, "Effect of Nitrogen Compounds and Organic Carbon Concentrations on N2O Emission during Denitrification," Clean Technology, vol. 17, no. 2, pp. 134-141, 2011. DOI: .

[ACM Style]

Kim DJ, Kim H, and Kim Y. 2011. Effect of Nitrogen Compounds and Organic Carbon Concentrations on N2O Emission during Denitrification. Clean Technology, 17, 2, (2011), 134-141. DOI: .

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한국연구재단 등재학술지