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Assessment and parameter identification of simplified models to describe the kinetics of semi-continuous biomethane production from anaerobic digestion of green and food waste

Owhondah, Raymond O.; Walker, Mark; Ma, Lin; Nimmo, Bill; Ingham, Derek B.; Poggio, Davide; Pourkashanian, Mohamed

Authors

Raymond O. Owhondah

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Dr Mark Walker Mark.Walker@hull.ac.uk
Lecturer in Sustainable Engineering Systems

Lin Ma

Bill Nimmo

Derek B. Ingham

Davide Poggio

Mohamed Pourkashanian



Abstract

Biochemical reactions occurring during anaerobic digestion have been modelled using reaction kinetic equations such as first-order, Contois and Monod which are then combined to form mechanistic models. This work considers models which include between one and three biochemical reactions to investigate if the choice of the reaction rate equation, complexity of the model structure as well as the inclusion of inhibition plays a key role in the ability of the model to describe the methane production from the semi-continuous anaerobic digestion of green waste (GW) and food waste (FW). A parameter estimation method was used to investigate the most important phenomena influencing the biogas production process. Experimental data were used to numerically estimate the model parameters and the quality of fit was quantified. Results obtained reveal that the model structure (i.e. number of reactions, inhibition) has a much stronger influence on the quality of fit compared with the choice of kinetic rate equations. In the case of GW there was only a marginal improvement when moving from a one to two reaction model, and none with inclusion of inhibition or three reactions. However, the behaviour of FW digestion was more complex and required either a two or three reaction model with inhibition functions for both ammonia and volatile fatty acids. Parameter values for the best fitting models are given for use by other authors.

Citation

Owhondah, R. O., Walker, M., Ma, L., Nimmo, B., Ingham, D. B., Poggio, D., & Pourkashanian, M. (2016). Assessment and parameter identification of simplified models to describe the kinetics of semi-continuous biomethane production from anaerobic digestion of green and food waste. Bioprocess and biosystems engineering, 39(6), 977-992. https://doi.org/10.1007/s00449-016-1577-x

Journal Article Type Article
Acceptance Date Feb 18, 2016
Online Publication Date Mar 9, 2016
Publication Date 2016-06
Deposit Date Mar 22, 2021
Publicly Available Date Mar 28, 2024
Journal Bioprocess and Biosystems Engineering
Print ISSN 1615-7591
Electronic ISSN 1615-7605
Publisher Springer Verlag
Peer Reviewed Peer Reviewed
Volume 39
Issue 6
Pages 977-992
DOI https://doi.org/10.1007/s00449-016-1577-x
Keywords Anaerobic digestion (AD); Modelling; Food waste (FW); Green waste (GW); Parameter estimation; Parameter identification
Public URL https://hull-repository.worktribe.com/output/3742497

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Copyright Statement
© The Author(s) 2016. This article is published with open access at Springerlink.com. Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.






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