Estimating Methane Gas Generation Rate from Sanandaj City Landfill Using LANDGEM Software

Abstract

The main gas arising from landfills is methane. The greenhouse effect of methane is 21 times more serious than that of carbon dioxide. On the other hand, this gas has a significant potential for producing energy, so that in cases of application of a suitable technology, a considerable energy from this gas could be extracted and used. One of the mathematical models used for estimation of the amount of methane potential in landfills is LANDGEM software, which was applied in the present research study. This was a descriptive-cross sectional study in which first, the data related to the amount of waste generated, population and landfill characteristics were collected. Then, Sanandaj (study area) population was estimated for different years of the study period with respect to selective growth coefficient. In the last phase, constant value of methane emission and methane production potential in Sanandaj landfill were specified using LANDGEM software. As a result, potential capacity for producing methane in Sanandaj landfill was estimated as 170 m 3 tG 1 and the amount of output methane during 2018, 2023, 2028 and 2033 is supposed to be 205, 410, 549 and 671 m 3 hG 1 , respectively. Indeed, production speed continues with a lower gradient from 2033 onward. Therefore, the results of current research can be used in designing and measuring the capacity of methane extraction systems from this landfill and in evaluation of Iran's contribution in global emission of greenhouse gases.

A Comprehensive Review of Atmospheric Air Pollutants Assessment Around Landfill Sites

“…The CH 4 generated or emitted from landfill can be used as a source of energy (Faour et al, 2007; Karanjekar et al, 2015; Kormi et al, 2017; Salami et al, 2020; Shin et al, 2005) but unfortunate most developing countries especially in Africa are tapping these benefits of waste to wealth and waste to energy principles. The amount of CH 4 emission from Sanandaj landfill has been estimated at 410, 549, and 671 m 3 /hr for 2023, 2028, and 2033 respectively (Shahmoradi et al, 2015). In another study, it was shown that 1.164 × 106 m 3 /annum of CH 4 was produced in Kachok dumpsite (Kenya) in the year 2018 (Kabok et al, 2021).…”

Estimation of Methane Emission from Kossihouen Sanitary Landfill and Its Electricity Generation Potential (Côte d’Ivoire)

“…These approaches include first-order decay (FOD), LFG generation models, including the US EPA's LFG emissions model (LandGEM), e-pollutants release and transfer registers (E-PRTR) (Fr) model, Intergovernmental Panel on Climate Change (IPCC) model, and Afvalzorg model [3]. One of the most commonly used and most flexible models is LandGEM [4]. This model that has been developed by the United States Environmental Protection Agency (USEPA), estimates an acceptable quantity of produced methane in landfills over time.…”

“…It estimates the volume and composition of the generated methane throughout time because of the degradation of organic matter in the landfill. In addition, this model is an important step in developing a landfill project, which allows to estimate the available recoverable quantity of methane as fuel energy over time [4].…”

“…Because methane is both a potent greenhouse gas and a valuable low carbon fuel, improved predictability of landfill methane production is desirable. Modeling and predicting methane production and emission in landfills is very important in designing and exploiting such places [4]. This study aims to estimate methane emission from Kossihouen sanitary landfill using LandGEM (version 3.02) and to quantify its electricity generation potential.…”