Volume No. 7 Issue No.: 2 Page No.: 652-659 Oct. - Dec. 2012

 

A COMPARATIVE STUDY OF N2O EMISSION FROM ALLUVIAL SOIL AS WELL AS MICRO-ORGANISMS ISOLATED FROM SOIL

 

Ray S., Mohanty A. and Roy Chaudhury G.*

Environment and Sustainability Department, CSIR-Institute of Minerals and Materials Technology, Bhubaneswar, Odisha (INDIA)

 

Received on : June 05, 2012

 

ABSTRACT

 

Incubation studies were carried out to determine the nitrous oxide (N2O) emission rate through denitrification as well as nitrification route using alluvial soil. The N2O emission rate observed to be more in nitrification compared to denitrification route. The emission increased with the increase of Water Filled Pore Space (WFPS) as well as concentration of initial urea. Denitrification and N2O emission rates were also carried out using heterotrophic microorganism isolate from the soil. The denitrification and N2O emission rates observed to be more using nutrients like potassium nitrate (KNO3) and sodium acetate (CH3COONa). In both the cases the results were interpreted using different kinetic equations like order of reaction as well as Michaelis- Menten equations.

 

Keywords : N2O, Rate Kinetics, Nitrification, Denitrification, Nitrogen, Carbon

 

 

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