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http://dx.doi.org/10.17137/Korrae.2013.21.1.62

Effect of organic concentration on its degradation kinetics in a burial site  

Lee, Chae-Young (Department of Civil Engineering, The University of Suwon)
Choi, Jae-Min (Department of Civil Engineering, The University of Suwon)
Oh, Seung-Jun (Department of Civil Engineering, The University of Suwon)
Han, Sun-Kee (Department of Environmental and Health, Korea National Open University)
Park, Joon-Kyu (Dasan consultants, R&D center)
Publication Information
Journal of the Korea Organic Resources Recycling Association / v.21, no.1, 2013 , pp. 62-68 More about this Journal
Abstract
The effect of organic substance on its degradation rate in burial site was investigated using batch tests. Substrate were swine and cattle with the initial concentrations of 2, 4, 6, 8, and 10 g VS(volatile solids)/L, respectively. The highest methane production rates of swine and cattle were found at 2 g VS/L as 46.3 and 48.4 ml CH4/g VS.d, respectively. As substrate concentration increased, the methane production rate decreased. The inhibition constants were n and m that were estimated using nonlinear inhibition model. The values of n and m were inhibition constants of methane production rate and ultimate methane yield, respectively. The values of n and m were 4.9 and 0.6 on swine and 1.1 and 0.4 on cattle. The methane production rate was responded sensitively by increase and decrease of substrate concentration, whereas ultimate methane yield do not relatively. From a relation between n and m, inhibitory effect of substrate concentration was confirmed as uncompetitive inhibition.
Keywords
Buried livestock; Degradation rate; Nonlinear inhibition model; Methane production rate; Ultimate production yield;
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