Role of Biokinetic Parameters in the Methane Emission Characteristics of MBT Waste

Abstract Biokinetic parameters have been extensively used to decide on the treatment methodology of a waste. Although literature reports studies on biokinetic parameters in wastewater treatments, their significance in the anaerobic treatment of municipal solid waste is not well explored. Furthermore...

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Bibliographic Details
Published in:Journal of hazardous, toxic and radioactive waste toxic and radioactive waste, 2022-10, Vol.26 (4)
Main Authors: Parameswaran, T. G., Krishnan, Navneeth R., Sughosh, P., Sivakumar Babu, G. L., Oldenburg, Curtis M.
Format: Article
Language:English
Subjects:
Anaerobic digestion
Anaerobic treatment
Biodegradation
Bioreactors
Emissions
Growth models
Growth rate
Hazardous materials
Landfills
Mathematical models
Methane
Municipal solid waste
Municipal waste management
Parameter estimation
Parametric statistics
Simulation
Solid waste management
Solid wastes
Substrates
Technical Papers
Waste disposal sites
Wastewater
Wastewater treatment
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Summary:Abstract Biokinetic parameters have been extensively used to decide on the treatment methodology of a waste. Although literature reports studies on biokinetic parameters in wastewater treatments, their significance in the anaerobic treatment of municipal solid waste is not well explored. Furthermore, to the best of authors’ knowledge, the applicability of biokinetic parameters in estimating the gas emission characteristics of a waste have not been reported anywhere. TOUGH2 Landfill Bioreactor Model (T2LBM), a module for the TOUGH2 simulator that provides simulation capabilities for the process of biodegradation of waste governed by a modified form of Monod’s growth model, is used to investigate the same. As an initial step, numerical modeling with T2LBM is carried out to validate the gas emission characteristics of an anaerobic bioreactor that degrades a mechanically and biologically treated (MBT) waste. A good match for the gas yield and waste settlement proves the model’s capability to simulate the process of biodegradation. A parametric study of the biokinetic parameters (namely the yield coefficient, saturation constant, growth rate, and death rate of microbes) helped establish the relation of these parameters with the methane emission characteristics through Monod’s kinetics. The relation of these parameters with the methane yield is also substantiated using time-dependent variation of substrate utilization. The values of the biokinetic parameters of the MBT waste indicate the suitability of anaerobic digestion to degrade MBT waste.
ISSN:2153-5493
2153-5515
DOI:10.1061/(ASCE)HZ.2153-5515.0000720