Integrated Modeling Tool to Optimize Co-digestion of Solid Wastes

Zaher, U.; Buffiere, P.; Steyer, J.-P.; Rosen, C.; Jeppsson, U.; Chen, S.
March 2008
Proceedings of the International Conference on Waste Technology ;2008, p773
Conference Proceeding
Anaerobic digestion processes can be improved by engineering the addition of other organic wastes of different compositions to the feedstock. This paper presents an integrated model to determine the optimal ratio of such additions once the practical characteristics and hydrolysis kinetics of each feedstock are known. Several model nodes were built in an integrated manner around the International Water Association Anaerobic Digestion Model Number 1, (IWA-ADM1) using the Matlab-Simulink simulation platform. Transformer model nodes were developed to estimate the waste fractions of carbohydrates, proteins and lipids to generate a detailed input for ADM1. Hydrolysis nodes were modeled separately for each feedstock. The fluxes from the hydrolysis nodes were combined and generated a detailed input vector to the 1WAADM 1. The integrated model was applied to a co-digestion case study of diluted dairy manure and kitchen wastes. The integrated model implementation lead to an improved simulation speed that made it feasible to run calibration and optimization of this case study. The integrated model was used to calibrate the hydrolysis kinetics of each waste and particulate fractions using bench scale experiments. An optimization case study based on 100 steady state simulations determined the operational limits for maximum methane production. For the tested waste concentrations, the optimum retention time was 10 days with an optimal kitchen waste to diluted manure ratio of 755%.


Related Articles

  • Modelling MSW decomposition under landfill conditions considering hydrolytic and methanogenic inhibition. Vavilin, Vasily A.; Jonsson, Susanne; Ejlertsson, Jörgen; Svensson, Bo H. // Biodegradation;Oct2006, Vol. 17 Issue 5, p389 

    A landfill typically progresses through a series of microbial degradation phases, in which hydrolysis, production and consumption of fermentation products, such as fatty acids, and methane formation play important roles. For ultimate degradation of the waste, stable methanogenic conditions have...

  • Organic Fraction of Municipal Solid Waste Conversion into Polyhydroxyalkanoates (PHA) in a Pilot Scale Anaerobic/Aerobic Process. Valentino, Francesco; Lorini, Laura; Pavan, Paolo; Bolzonella, David; Majone, Mauro // CET Journal - Chemical Engineering Transactions;2019, Vol. 74, p265 

    In recent years, the attention to organic wastes as a new feedstock for the production of PHA is increased based on the idea that this is the only way to reduce their high cost and to increase their sustainability. For this reason, a pilot platform has been designed to produce PHA from the...

  • A pyrosequencing-based metagenomic study of methane-producing microbial community in solid-state biogas reactor. An Li; Ya'nan Chu; Xumin Wang; Lufeng Ren; Jun Yu; Xiaoling Liu; Jianbin Yan; Lei Zhang; Shuangxiu Wu; Shizhong Li // Biotechnology for Biofuels;2013, Vol. 6 Issue 1, p1 

    Background: A solid-state anaerobic digestion method is used to produce biogas from various solid wastes in China but the efficiency of methane production requires constant improvement. The diversity and abundance of relevant microorganisms play important roles in methanogenesis of biomass. The...

  • Pretreatment of Chicken Feather Waste for Improved Biogas Production. Forgács, Gergely; Lundin, Magnus; Taherzadeh, Mohammad; Sárvári Horváth, Ilona // Applied Biochemistry & Biotechnology;Apr2013, Vol. 169 Issue 7, p2016 

    This study deals with the utilization of chicken feather waste as a substrate for anaerobic digestion and improving biogas production by degradation of the compact structure of the feather keratin. In order to increase the digestibility of the feather, different pretreatments were investigated,...

  • Modeling Municipal Solid Waste Management in Africa: Case Study of Matadi, the Democratic Republic of Congo. Din, Gregory Yom; Cohen, Emil // Journal of Environmental Protection;May2013, Vol. 4 Issue 5, p435 

    The purpose of this article is to present the key elements for best performance and profitability of Municipal Solid Waste (MSW) management in a low-income city. The research provides an overview of methods and models for integrated planning of a two-phase program: MSW collection and...

  • Application of analytic hierarchy process in a waste treatment technology assessment in Mexico. Taboada-González, Paul; Aguilar-Virgen, Quetzalli; Ojeda-Benítez, Sara; Cruz-Sotelo, Samantha // Environmental Monitoring & Assessment;Sep2014, Vol. 186 Issue 9, p5777 

    The high per capita generation of solid waste and the environmental problems in major rural communities of Ensenada, Baja California, have prompted authorities to seek alternatives for waste treatment. In the absence of a selection methodology, three technologies of waste treatment with energy...

  • Comparison of dry and wet digestion for solid waste. Luning, L.; Van Zundert, E. H. M. // Water Science & Technology;2003, Vol. 48 Issue 4, p15 

    To reduce the amount of MSW going to landfills a number of technologies have been developed. Two main types of anaerobic digestion processes are distinguished for MSW organic waste, which are generally referred to as "wet" (10-15% DM) and "dry" (24-40% DM) anaerobic digestion processes. The...

  • Partial stream digestion of residual municipal solid waste. De Baere, L. // Water Science & Technology;2008, Vol. 57 Issue 7, p1073 

    Anaerobic digestion of residual municipal solid waste (MSW) has become more important than the digestion of source separated biowaste. More than 52% of the capacity available in Europe was designed for digestion of residual municipal waste by the end of 2006, while this was only 13% in 1998....

  • Influence of Recycling Different Leachate Volumes on Refuse Anaerobic Degradation. Hernández-Berriel, Ma. C.; Mañón-Salas, C.; Sánchez-Yáñez, J. M.; Lugo-de la Fuente, J.; Márquez-Benavides, L. // Open Waste Management Journal;2010 Special Issue 2, p155 

    The aim of this work was to determine the appropriate moisture regime, attained by leachate recycling, to achieve the highest municipal solid waste (MSW) biodegradation rate. To this end, leachate characteristics, methane production rate and changes in degraded refuse were studied. Twenty...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics