Related Experiment Video
Updated: Jun 25, 2026

Estimating Sediment Denitrification Rates Using Cores and N2O Microsensors
Published on: December 6, 2018
Characteristics of nitrite and nitrate in situ denitrification in landfill bioreactors
Zhimin Fu1, Fenglin Yang, Yingyu An
1Key Laboratory of Industrial Ecology and Environmental Engineering, MOE, School of Environmental and Biological Science and Technology, Dalian University of Technology, Dalian 116024, PR China.
Abstract:
The objective of this research was to investigate the macroscopical effect of high concentration nitrite and nitrate denitrification on waste decomposition and to evaluate the kinetics of NO(3)(-)-N and NO(2)(-)-N removal. Two reactors loaded fresh refuse were fed 4000 mg NO(3)(-)-N/L or 4000 NO(2)(-)-N/L every 48 h, respectively. Results showed that NO(3)(-)-N addition was more effective on promotion of the waste degradation process as compared to NO(2)(-)-N addition. In the initial stage, NO(x)(-)-N removal was mainly contributed by adsorption rather than denitrification. NO(x)(-)-N reduction rate data obtained from microcosm experiment were fit to Monod kinetics, with specific removal rates of 1.625 mg NO(3)(-)-N/(g dry waste d) and 1.125 mg NO(2)(-)-N/(g dry waste d) and nitrogen removal half-saturation constants of 1250.5 NO(3)(-)-N/L and 125.5 NO(2)(-)-N/L, respectively.
More Related Videos
Related Concept Videos
Microbes and the Nitrogen Cycle
Inorganic Nitrogen Assimilation
Overview of Nitrogen Metabolism
The largest pool of nitrogen available in the terrestrial ecosystem is gaseous nitrogen (N2) from the air, but this nitrogen...
Metabolism of Chemolithotrophs
The Nitrogen Cycle
Microbial Wastewater Treatment

