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Volume 9, Issue 2, March 2020, Page: 22-28
System Dynamics Model of the Kinetics of Biogas Production from Vegetal Matter
Abiodun Suleiman Momodu, Centre for Energy Research and Development, Obafemi Awolowo University, Ile-Ife, Nigeria
Tofunmi Dorcas Adepoju, Youth National Service, Energy Commission of Nigeria, Garki, Abuja, Nigeria
Received: Mar. 17, 2020;       Accepted: Mar. 27, 2020;       Published: Apr. 29, 2020
DOI: 10.11648/j.ijepe.20200902.11      View  37      Downloads  25
Abstract
The use of renewable energy sources including biomass for energy generation, to achieve diversification in energy production, has been found to be sustainable economically, financially and environmentally. Various energy production technologies exist by which biomass can be converted for energy generation. Such technologies include anaerobic digestion, gasification, thermal depolymerization, pyrolysis, fermentation, anaerobic digestion, amongst others. The focus of this study is on the use of anaerobic digestion technology. Anaerobic digestion is recognized as one of the best options for treating biomass as it helps to avoid CO2 emissions and run off of biomass. It is a natural process in which bacteria convert organic materials into biogas and fertilizer production in an environmentally friendly way. Anaerobic digestion is a series of sequential process including hydrolysis, acidogenesis, acetogenesis and methanogenesis. Different models have been applied to capture the characteristics of the anaerobic digestion process such as first-order model, Gompertz model and logistic model. However, Gompertz model is considered as the best model in describing the growth of animals and plants as well as the volume of bacteria. It is also used to describe the cumulative biogas production curve in batch digestion assuming that substrate levels limit growth in a logarithmic relationship. This study developed a System Dynamics model (SDM) for predicting biogas production (BP) in an anaerobic condition, based on Gompertz-Laird model. The objective is to describe the process of a System Dynamic (SD) model of two stage kinetics of BP. Primary data used were obtained from a laboratory experiment of BP using vegetal wastes, while secondary data were obtained from literature on studies using similar substrates. The Causal loop diagram generated, describes the anaerobic digestion (AD) process usually undergone by a substrate, while the Stock Flow diagram depicts the building blocks of the dynamic behavior of the same process. The developed SD model consists of two-level variables which depict the equations driving the AD process represented as hydrolysis-acidogenesis and acetogenesis-methanogenesis. The model results showed a significant lag phase between methanogenesis and fermentation stage, which was found to be linked to the inoculum-substrate ratio. The study conclusion includes: inoculum to substrate ratio affects BP; inconsistency of the experimental data caused by inhibition explains the variation observed between the empirical and simulated results.
Keywords
System Dynamics, Kinetics, Biogas, Vegetal Matter
To cite this article
Abiodun Suleiman Momodu, Tofunmi Dorcas Adepoju, System Dynamics Model of the Kinetics of Biogas Production from Vegetal Matter, International Journal of Energy and Power Engineering. Vol. 9, No. 2, 2020, pp. 22-28. doi: 10.11648/j.ijepe.20200902.11
Copyright
Copyright © 2020 Authors retain the copyright of this article.
This article is an open access article distributed under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Reference
[1]
Lloyd, P. J. (2017). The role of energy in development. Journal of Energy in Southern Africa, 28 (1), 54-62.
[2]
Stern, D. I. (2004) Economic Growth and Energy. Encyclopedia of Energy, Volume 2. Pg 35 – 51.
[3]
Arto, I., Capellán-Pérez, I., Lago, R., Bueno, G., and Bermejo, R., (2016). The energy requirements of a developed world. Energy for Sustainable Development, 33, pp. 1-13.
[4]
UNEP (1997) Environment for People: Building Bridges for Sustainable Development, UNEP, New York, pp. 4-9.
[5]
Bertram and Doug Clover (2010). Generating Electricity in a Carbon- constrained world.
[6]
US EPA (2017) Environmental Economics: Economics of Biofuels.
[7]
Technavio (2015) Five Processes Being Used to Turn Waste into Energy.
[8]
Arsova (2010) Anaerobic digestion of food waste.
[9]
Weinrich, S., Koch, S., Bonk, F., Popp, D., Benndorf, D., Klamt, S., & Centler, F. (2019). Augmenting biogas process modeling by resolving intracellular metabolic activity. Frontiers in microbiology, 10.
[10]
Hamawand, I., & Baillie, C. (2015). Anaerobic digestion and biogas potential: simulation of lab and industrial-scale processes. Energies, 8 (1), 454-474.
[11]
Bala, B. K. (1991). System dynamics modeling and simulation of biogas production systems. Renewable energy, 1 (5-6), 723-728.
[12]
Fang Yulin, Ying Q.; Kai, H. L., Feng B., 2018. System dynamics modeling for information systems research: Theory development and practical applications. MIS Quarterly, Volume 42, No (4), pp. 1303-1329.
[13]
Gavala, H. N., Yenal, U., Skiadas, I. V., Westermann, P., Ahring, B. K., 2003. Mesophilic and Thermophilic Anaerobic Digestion of Primary and Secondary Sludge: Effect of Pretreatment at Elevated Temperature. Journal of Water Research, Volume 37, pp. 4561−4572.
[14]
Ghatak, M., & Mahanta, P. (2017). Kinetic model development for biogas production from lignocellulosic biomass. International Journal of Technology, 8 (4), 673-680.
[15]
Abdullahi, I., 2011. Effect of Kinetic Parameters on Biogas Production from Local Substrate using a Batch Feeding Digester. European Journal of Scientific Research, Volume 57, pp. 626−634.
[16]
Pham Van, D., Hoang, M. G., Pham Phu, S. T., & Fujiwara, T. (2018). A new kinetic model for biogas production from co-digestion by batch mode. Global Journal of Environmental Science and Management, 4 (3), 251-262.
[17]
Deepanraj, B.; Sivasubramanian, V.; Jayaraj, S., (2015). Experimental and kinetic study on anaerobic digestion of food waste: The effect of total solids and pH. J. Renewable Sustainable Energy, 7 (6).
[18]
Kythreotou, N.; Florides, G.; Tassou, S. A., (2014). A review of simple to scientific models for anaerobic digestion. Renewable Energy, 71: 701-714.
[19]
Nopharatana, A., Pullammanappallil, P. C., Clarke, W. P., 2007. Kinetics and Dynamic Modeling of Batch Anaerobic Digestion of Municipal Solid Waste in a Stirred Reactor. Waste Management, Volume 27, pp. 595–603.
[20]
Pham Van, D., Hoang, M. G., Pham Phu, S. T., & Fujiwara, T. (2018). Kinetics of carbon dioxide, methane, and hydrolysis in the co-digestion of food and vegetable wastes. Global Journal of Environmental Science and Management, 4 (4), 401-412.
[21]
Kafle, G. K.; Chen, L., (2016). Comparison on batch anaerobic digestion of five different livestock manures and prediction of biochemical methane potential (BMP) using different statistical models. Waste Manage. (Oxford), 48: 492-502.
[22]
Schofield, P.; Pitt, R.; Pell, A., (1994). Kinetics of fiber digestion from in vitro gas production. J. Anim. Sci., 72 (11): 2980-2991.
[23]
Tjørve, K. M., & Tjørve, E. (2017). The use of Gompertz models in growth analyses, and new Gompertz-model approach: An addition to the Unified-Richards family. PloS one, 12 (6), e0178691.
[24]
Rossi, R. M., de Oliveira Grieser, D., de Almeida Conselvan, V., & Marcato, S. M. (2017). Growth curves in meat-type and laying quail: a Bayesian perspective. Semina: Ciências Agrárias, 38 (4), 2743-2754.
[25]
Sterman, J. D. (2000). Business dynamics: systems thinking and modeling for a complex world: Jeffrey J. Shelstad, Indianapolis, IN.
[26]
Cornet, C., & Euverink, G. J. W. (2017). Inhibiting factors in the anaerobic digestion process for biogas production (Doctoral dissertation, Faculty of Science and Engineering).
[27]
Chen, Y., Cheng, J. J., & Creamer, K. S. (2008). Inhibition of anaerobic digestion process: a review. Bioresource Technology, 99 (10), 4044-4064.
[28]
Adekunle, K. F., & Okolie, J. A. (2015). A review of the biochemical process of anaerobic digestion Advances in Bioscience and Biotechnology, 6 (03), 205.
[29]
Salomoni, C., Caputo, A., Bonoli, M., Francioso, O., Rodriguez-Estrada, M. T., & Palenzona, D. (2011). Enhanced methane production in a two-phase anaerobic digestion plant, after CO2 capture and addition to organic wastes. Bioresource Technology, 102 (11), 6443-6448.
[30]
Stan, C., Collaguazo, G., Streche, C., Apostol, T., & Cocarta, D. (2018). Pilot-scale anaerobic co-digestion of the OFMSW: Improving biogas production and startup. Sustainability, 10 (6), 1939.
[31]
Bougrier, C., Delgenes, J. P., & Carrere, H. (2007). Impacts of thermal pre-treatments on the semi-continuous anaerobic digestion of waste activated sludge. Biochemical Engineering Journal, 34 (1), 20-27.
[32]
Mauerhofer, L. M., Pappenreiter, P., Paulik, C., Seifert, A. H., Bernacchi, S., & Simon, K. M. R. (2019). Methods for quantification of growth and productivity in anaerobic microbiology and biotechnology. Folia microbiologica, 64 (3), 321-360.
[33]
Obiukwu, O. O., & Nwafor, M. O. (2016). Comparative evaluation of batch and continuous process biogas production from animal wastes. International Journal of Ambient Energy, 37 (1), 29-35.
[34]
Okorigwe, E. C., & Agbo, S. N. (2007). Gas evacuation effect on the quantity of gas production in a biogas digester. Trends Appl. Sci. Res, 2 (3), 246-250
[35]
Boulanger, A., Pinet, E., Bouix, M., Bouchez, T., & Mansour, A. A. (2012). Effect of inoculum to substrate ratio (I/S) on municipal solid waste anaerobic degradation kinetics and potential. Waste Management, 32 (12), 2258-2265.
[36]
Ali Shah, F., Mahmood, Q., Maroof Shah, M., Pervez, A., and Ahmad Asad, S. (2014). Microbial ecology of anaerobic digesters: the key players of anaerobiosis. The Scientific World Journal, 2014.
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