scholarly journals Modeling of Methane Gas Generation and Emissions from Landfills

2021 ◽  
Author(s):  
Khanam Mahbuba
Keyword(s):  
Landfill Gas ◽  
Assessment Model ◽  
Waste Streams ◽  
Gas Generation ◽  
National Assessment ◽  
Methane Generation ◽  
Methane Gas ◽  
Gas Recovery ◽  
Recovery Percentage

This study was carried out to develop a model capable of predicting the generation and potential emission of methane gas into the environment. Ryerson Landfill Gas Model (RLFGM) was developed using the IPCC tier two model (revised guidelines), the most recent national assessment model (Brown et. al. 1999) from UK and the model developed from DEFRA, UK. This report outlines the findings of the study and its recommendations. The study was performed on detailed characterization of solid waste as RDO, MDO and SDO and by dividing these waste components into nine waste fractions. The waste fractions are described by the percentage of moisture content of the fraction, the proportion of cellulose and hemi-cellulose, and the percentage of the degradability of the cellulose and hemi-cellulose fraction. Methane generating potential (L₀) was calculated from DOC and DOC(subscript f) value. The three methane generation rate constants (k) were used. Methane oxidation, methane correction factor, percentage of methane gas recovery, percentage of methane content in landfill gas were assumed based on comprehensive literature review. After the verification of the output of the RLFGM model with the LandGEM model it was found that the model is producing similar type of output graph as the LandGEM model but the rate of emissions of methane gas into the environment is lower in RLFGM model. It has been concluded that RLFGM model gives the realistic output with respect to individual landfill sites, taking into account of specific waste streams and deposition rates.

scholarly journals Modeling of Methane Gas Generation and Emissions from Landfills

2021 ◽  
Author(s):  
Khanam Mahbuba
Keyword(s):  
Landfill Gas ◽  
Assessment Model ◽  
Waste Streams ◽  
Gas Generation ◽  
National Assessment ◽  
Methane Generation ◽  
Methane Gas ◽  
Gas Recovery ◽  
Recovery Percentage

This study was carried out to develop a model capable of predicting the generation and potential emission of methane gas into the environment. Ryerson Landfill Gas Model (RLFGM) was developed using the IPCC tier two model (revised guidelines), the most recent national assessment model (Brown et. al. 1999) from UK and the model developed from DEFRA, UK. This report outlines the findings of the study and its recommendations. The study was performed on detailed characterization of solid waste as RDO, MDO and SDO and by dividing these waste components into nine waste fractions. The waste fractions are described by the percentage of moisture content of the fraction, the proportion of cellulose and hemi-cellulose, and the percentage of the degradability of the cellulose and hemi-cellulose fraction. Methane generating potential (L₀) was calculated from DOC and DOC(subscript f) value. The three methane generation rate constants (k) were used. Methane oxidation, methane correction factor, percentage of methane gas recovery, percentage of methane content in landfill gas were assumed based on comprehensive literature review. After the verification of the output of the RLFGM model with the LandGEM model it was found that the model is producing similar type of output graph as the LandGEM model but the rate of emissions of methane gas into the environment is lower in RLFGM model. It has been concluded that RLFGM model gives the realistic output with respect to individual landfill sites, taking into account of specific waste streams and deposition rates.

scholarly journals Influence of ambience temperature and operational-constructive parameters on landfill gas generation: Case study Novi Sad

2010 ◽  
Vol 14 (2) ◽  
pp. 555-564
Author(s):  
Goran Vujic ◽  
Nebojsa Jovicic ◽  
Maja Petrovic-Djurovic ◽  
Dejan Ubavin ◽  
Branka Nakomcic ◽  
...  
Keyword(s):  
Alternative Energy ◽  
Landfill Gas ◽  
Energy Utilization ◽  
Gas Generation ◽  
Methane Generation ◽  
Alternative Energy Sources ◽  
And Migration ◽  
Novi Sad ◽  
Resources Exploitation

Researches in the area of landfill gas generation and energy utilization are currently underway and widespread in the world for several reasons: reducing effects of greenhouse gases, possibilities for utilizing alternative energy sources, reducing conventional energy resources exploitation, and environmental protection. First part of this research is conducted with an aim to establish the influence of meteorological parameters, primarily ambience temperature, on the methane generation processes at Novi Sad landfill. The second part of the research refers to functional characteristics of landfill such as the waste age, closing practice, and the age of certain parts of landfill body, as well as the waste depth and quantity of generated methane. Based on several years of investigation, it is concluded that methane generation varies in the range of 0-34 vol.% m3/m3, and that seasonal variations have significant influence on methane generation. At low temperatures, during winter, methane generation and migration is stagnant while in summer periods, due to higher temperatures, the process of methane generation is more intensive.

Computer simulation to evaluate the economics of landfill gas recovery

1998 ◽  
Vol 38 (2) ◽  
pp. 201-208
Author(s):  
M. W. Milke
Keyword(s):  
Computer Simulation ◽  
Computer Program ◽  
Landfill Gas ◽  
Base Case ◽  
Simulation Tool ◽  
Hypothetical Case ◽  
Gas Recovery ◽  
Fixed Set ◽  
Key Variables ◽  
Simulation Results

A need exists for tools to improve evaluations of the economics of landfill gas recovery. A computer simulation tool is presented. It uses a spreadsheet computer program to calculate the economics for a fixed set of inputs, and a simulation program to consider variations in the inputs. The method calculates the methane generated each year, and estimates the costs and incomes associated with the recovery and sale of the gas. Base case results are presented for a city of 500,000. An uncertainty analysis for a hypothetical case is presented. The simulation results can help an analyst see the key variables affecting the economics of a project.

Landfill Gas Generation Projects Implementation

2020 ◽  
Author(s):  
Andrei A. Achitaev ◽  
Stanislav A. Eroshenko ◽  
Anastasia G. Rusina ◽  
Alexey A. Zhidkov ◽  
Pavel N. Evseenkov
Keyword(s):  
Landfill Gas ◽  
Gas Generation

Characterization of malodorous sulfur compounds in landfill gas

2005 ◽  
Vol 39 (6) ◽  
pp. 1103-1112 ◽  
Author(s):  
Ki-Hyun Kim ◽  
YJ Choi ◽  
EC Jeon ◽  
Young Sunwoo
Keyword(s):  
Landfill Gas ◽  
Sulfur Compounds

scholarly journals Municipal Solid Waste Characterization and Landfill Gas Generation in Kakia Landfill, Makkah

2021 ◽  
Vol 13 (3) ◽  
pp. 1462
Author(s):  
Faisal A. Osra ◽  
Huseyin Kurtulus Ozcan ◽  
Jaber S. Alzahrani ◽  
Mohammad S. Alsoufi
Keyword(s):  
Solid Waste ◽  
Energy Recovery ◽  
Solid Waste Management ◽  
Landfill Gas ◽  
Drainage System ◽  
Solid Wastes ◽  
Generation Model ◽  
Gas Generation ◽  
Municipal Solid Wastes ◽  
Makkah City

In many countries, open dumping is considered the simplest, cheapest, and most cost-effective way of managing solid wastes. Thus, in underdeveloped economies, Municipal Solid Wastes (MSW) are openly dumped. Improper waste disposal causes air, water, and soil pollution, impairing soil permeability and blockage of the drainage system. Solid Waste Management (SWM) can be enhanced by operating a well-engineered site with the capacity to reduce, reuse, and recover MSW. Makkah city is one of the holiest cities in the world. It harbors a dozen of holy places. Millions of people across the globe visit the place every year to perform Hajj, Umrah, and tourism. In the present study, MSW characterization and energy recovery from MSW of Makkah was determined. The average composition of solid waste in Makkah city is organic matter (48%), plastics (25%), paper and cardboard (20%), metals (4%), glass (2%), textiles (1%), and wood (1%). In order to evaluate energy recovery potential from solid waste in Kakia open dumpsite landfill, the Gas Generation Model (LandGEM) was used. According to LandGEM results, landfill gas (methane and carbon dioxide) generation potential and capacity were determined. Kakia open dump has a methane potential of 83.52 m3 per ton of waste.

Formulating landfill gas emissions model for forecasting methane generation from waste under Iranian scenario

2021 ◽  
Vol 28 (3) ◽  
pp. 298
Author(s):  
Abbas Norouzian Baghani ◽  
Mohammad Mahdi Emamjomeh ◽  
Somayeh Golbaz ◽  
Amir Hossein Mahvi
Keyword(s):  
Landfill Gas ◽  
Gas Emissions ◽  
Methane Generation ◽  
Landfill Gas Emissions

Developing low-cost methane gas concentration measuring device

2021 ◽  
pp. 54-59
Author(s):  
Md. Mahidy Hossain ◽  
Nadim Khandaker
Keyword(s):  
Promising Result ◽  
Low Cost ◽  
Measurement Techniques ◽  
Health And Safety ◽  
Modern Science ◽  
Methane Content ◽  
Measuring Device ◽  
Methane Generation ◽  
Methane Gas ◽  
Wide Range

In every aspect of Engineering more advanced, efficient and progressive solutions are required. The modern age of science requires innovative minds. The field of environmental engineering is also advancing with modern science and technology innovations. Measuring of methane concentration and flow rate is nothing new, yet a complicated process. The need for more accurate measurement is a necessity in proper operation of bio digesters for methane generation. The traditional process of the measuring methane content in biogas is time consuming yet complicated. The need for development and application of methane measurement techniques is not only limited to biogas but has other monitoring value as well in other health and safety applications in built environments. Winsen Electronics and Hanwei Electronics are two of the leading sensor-manufactures of China who are providing a wide range of gas detecting sensors that are locally available in Bangladesh and yet has not been applied to methane content measurement in biogas operations. In This paper we are reporting on the application of a purpose-built propane, butane detector for methane gas detection within the range of accuracy for it to be applied in methane detection in a biogas stream. This paper, reports on application and calibration of the methane detecting sensor MQ-4 with promising result. Based on the study we postulate that the sensor can be used to detect methane for an on-line monitoring of many environmental, industrial purposes such as bio digesters, integrated waste management facility. The cost of fabrication of the sensor system is only $18 making it a viable sensor with respect to cost for application in Bangladesh.

Formulating landfill gas emissions model for forecasting methane generation from waste under Iranian scenario

2021 ◽  
Vol 28 (3) ◽  
pp. 298
Author(s):  
Somayeh Golbaz ◽  
Amir Hossein Mahvi ◽  
Mohammad Mahdi Emamjomeh ◽  
Abbas Norouzian Baghani
Keyword(s):  
Landfill Gas ◽  
Gas Emissions ◽  
Methane Generation ◽  
Landfill Gas Emissions
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