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Biokinetics of Anaerobic Digestion of Municipal Waste
Nwabanne, J. T.; Onukwuli, O. D. & Ifeakandu, C. M.
Abstract
A study of the biokinetics of anaerobic digestion of municipal solid waste (MSW) was
carried out using anaerobic batch digester. From the experimental results, the kinetic parameters
(coefficient values) of the digestion of the MSW were determined. The maximum rate of substrate
utilization (K), saturation constant (Ks), endogenous decay coefficient (Kd), biomass Yield or microbial
growth yield (Y) and maximum specific growth rate (μmax) were found to be 0.144 day -1, 21.23 mg/L,
0.038 day -1, 0.367, and 0.053 day -1 respectively. These values indicate that practical digesters for
MSW will require inoculation of the feed with microorganism to increase the rate of digestion. The
biokinetics of anaerobic digestion of MSW was well described by first order kinetic model.
Keywords
Anaerobic digestion, Municipal solid waste, Biokinetics
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