Development of mathematical model and experimental Validation for batch bio-drying of municipal solid waste: Mass balances

Chemosphere ◽  
2021 ◽  
pp. 132272
Author(s):  
Ani Lawrance ◽  
Ajit Haridas ◽  
S. Savithri ◽  
A. Arunagiri
Keyword(s):  
Mathematical Model ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Experimental Validation ◽  
Mass Balances

scholarly journals Biogas from municipal solid waste landfills: a simplified mathematical model

2018 ◽  
Vol 77 (10) ◽  
pp. 2426-2435
Author(s):  
D. Di Trapani ◽  
G. Mannina ◽  
S. Nicosia ◽  
G. Viviani
Keyword(s):  
Mathematical Model ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Biogas Production ◽  
Simulated Data ◽  
Reliable Estimate ◽  
First Results ◽  
Municipal Solid Waste Landfills ◽  
Solid Waste Landfills ◽  
Management Cycle

Abstract Municipal solid waste (MSW) landfills now represent one of the most important issues related to the waste management cycle. Knowledge of biogas production is a key aspect for the proper exploitation of this energy source, even in the post-closure period. In the present study, a simple mathematical model was proposed for the simulation of biogas production. The model is based on first-order biodegradation kinetics and also takes into account the temperature variation in time and depth as well as landfill settlement. The model was applied to an operating landfill located in Sicily, in Italy, and the first results obtained are promising. Indeed, the results showed a good fit between measured and simulated data. Based on these promising results, the model can also be considered a useful tool for landfill operators for a reliable estimate of the duration of the post-closure period.

scholarly journals The generation of a mathematical model of the biogas production process from organic municipal solid waste

2020 ◽  
Vol 180 ◽  
pp. 02019 ◽  
Author(s):  
Marzhan Temirbekova ◽  
Madina Aliyarova ◽  
Iliya Iliev ◽  
Aliya Yelemanova ◽  
Saule Sagintayeva
Keyword(s):  
Mathematical Model ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Anaerobic Fermentation ◽  
Biogas Production ◽  
Biogas Plant ◽  
Model Parameters ◽  
Biochemical Processes ◽  
Biogas Plants ◽  
The Mathematical Model

This paper justifies the efficiency of the biogas collection and utilization at the MSW (municipal solid waste) landfill in Almaty with the installation of several modern biogas plants. The optimal mode of processes occurring in a biogas plant is determined by computer generated simulations. Mathematical model parameters were identified to describe biochemical processes occurring in a biogas plant. Two approaches are used to resolve the mathematical model: the finite-difference method for solving the system of differential equations and simulation modeling by using the Any Logic package. A program is written in the algorithmic language C ++. Numerous calculations were carried out, the results of which are presented in curves and their qualitative picture is consistent with the ongoing processes. The created computer program allows to make a preliminary forecast of anaerobic fermentation occurring in the bioreactor depending on volume of the substrate, methane microorganisms and temperature conditions.

scholarly journals A mathematical model for the municipal solid waste location-routing problem with intermediate transfer stations

2015 ◽  
Vol 19 ◽  
Author(s):  
Hossein Asefi ◽  
Samsung Lim ◽  
Mojtaba Maghrebi
Keyword(s):  
Mathematical Model ◽  
Waste Management ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Solid Waste Management ◽  
Municipal Solid Waste Management ◽  
Location Routing Problem ◽  
Routing Problem ◽  
Location Routing ◽  
Efficient Planning

Municipal solid waste management is one of the challenging issues in mega cities due to various interrelated factors such as operational costs and environmental concerns. Cost as one of the most significant constraints of municipal solid waste management can be effectively economized by efficient planning approaches. Considering diverse waste types in an integrated municipal solid waste system, a mathematical model of the location-routing problem is formulated and solved in this study in order to minimize the total cost of transportation and facility establishment.

scholarly journals Estimation of Biogas Generated in Two Landfills in South-Central Ecuador

Atmosphere ◽  
2021 ◽  
Vol 12 (10) ◽  
pp. 1365
Author(s):  
Paulina Poma ◽  
Marco Usca ◽  
María Polanco ◽  
Theofilos Toulkeridis ◽  
Carlos Mestanza-Ramón
Keyword(s):  
Climate Change ◽  
Carbon Dioxide ◽  
Mathematical Model ◽  
Organic Matter ◽  
Global Warming ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Electrical Energy ◽  
South Central ◽  
Carbon Dioxide Co2

The landfill is a final disposal technique to confine municipal solid waste (MSW), where organic matter is degraded generating leachate and biogas composed of methane gases (CH4), carbon dioxide (CO2) and other gases that contribute to global warming. The objective of the current research was to estimate the amount of biogas generated through the LandGEM 3.03 mathematical model to determine the amount of electrical energy generated and the number of homes that would be supplied with electrical energy from 2021 to 2144. As a result of the application, it was estimated that in the Pichacay landfill, the highest point of biogas generation in 2053 would be 76,982,177 (m3/year) that would generate 81,226,339.36 (kWh/year), and would supply 5083 homes with electricity. Similarly, in the Las Iguanas landfill, the highest point would be 693,975,228 (m3/year) of biogas that produces 73,223,5296.7 (kWh/year) and would supply electricity to 45,825 homes. Of the performed gas analyses in the Pichacay landfill in 2020, an average of 51.49% CH4, 40.35% CO2, 1.75% O2 and 17.8% H2S was presented, while in the Las Iguanas landfill, for 2020 and 2021, we obtained an average of 51.88/CH4, 36.62% CO2, 1.01% O2 and 187.58 ppm H2S. Finally, the biogas generated by being harnessed minimizes the impacts related to global warming and climate change and would contribute electricity to the nearby communities.

scholarly journals Study of the formation and decomposition processes of agglomerates during fixed bed combustion of polymeric materials

2020 ◽  
Vol 209 ◽  
pp. 03010
Author(s):  
Igor Donskoy ◽  
Aleksandr Kozlov ◽  
Maksim Penzik ◽  
Denis Svishchev
Keyword(s):  
Mathematical Model ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Energy Production ◽  
Fixed Bed ◽  
Polymeric Materials ◽  
Ceramic Particles ◽  
Hot Gas ◽  
Decomposition Processes ◽  
Fuel Particles

There are a lot of problems related with thermal utilization of municipal solid waste, including the agglomeration of fuel particles, which occurs during combustion and gasification of waste for energy production. In order to investigate the features of the agglomeration processes, experiments were carried out on melting polyethylene granules in a mixture with ceramic particles. Using a mathematical model, the characteristics of agglomeration in a fixed bed heated with a hot gas are investigated.

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