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Impact of Methane Emission Reduction Measures in a Tropical Landfill to Methane Ambient Air Quality |
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| รหัสดีโอไอ | |
| Creator | 1. Iwan Juwana 2. Hamasah Abdurrohman Al-Madani 3. Siti Ainun 4. Didin Agustian Permadi |
| Title | Impact of Methane Emission Reduction Measures in a Tropical Landfill to Methane Ambient Air Quality |
| Publisher | Thai Society of Higher Education Institutes on Environment |
| Publication Year | 2567 |
| Journal Title | EnvironmentAsia |
| Journal Vol. | 17 |
| Journal No. | 1 |
| Page no. | 112-122 |
| Keyword | Landfill, Methane, IPCC, LandGEM, AERMOD |
| URL Website | http://www.tshe.org/ea/index.html |
| Website title | EnvironmentAsia |
| ISSN | 1906-1714 |
| Abstract | Anaerobic process occurred in landfills emits substantial amount of methane (CH4) to the atmosphere. Methane is a strong greenhouse gas (GHG) as well as an ozone precursor therefore reduction of the emission would provide co-benefits on reduced climate forcing and improved air quality. Emission inventory for the base year of 2019 where the activity data were available was done using both Intergovernmental Panel on Climate Change (IPCC) and Landfill Gas Emissions Model (LandGEM) models. Emission results were compared with the flux rate measurement using close flux chamber at the landfill but for limited period. Two selected measures were proposed: biocover (biosolid) and pipe-flaring system and emission reductions were calculated. Dispersion analysis of base year methane emission was done using the Aermic Model (AERMOD) model with grids size of 0.5 x 0.5 km with a radius of 5 km from the landfill for maximum hourly, daily maximum, and annual average periods. The results of the model analysis showed that the locations exposed to the maximum concentration were within a radius of up to 1 km from the landfill to the eastern part of domain which is dominated by rice fields and residential area. High concentrations of methane over the residential areas potentially triggered the ozone formation as other local ozone precursors such as NOx and CO were potentially emitted. Meteorological factors, especially wind patterns, greatly affected the distribution pattern of CH4 in the study area. Simulations of two measures of bio-cover and pipe-flaring system were also done to investigate the impact on the methane air quality. Emission reduction of the pipe-flaring system yielded higher value as compared to the biocover therefore simulated methane also showed lower concentrations over the domain. In the near future, it is recommended that the pipe-flaring system to be installed in the landfill. |
