Application of landgem mathematical model for the estimation of gas emissions from contaminated sites. A case study of a dumping site in Lahore, Pakistan

Asifa Alam, M. Nawaz Chaudhry, Sajid Rashid Ahmad, Rizwan Ullah, Syeda Adila Batool, Talib E. Butt, Huda Ahmed Alghamdi, Adeel Mahmood*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Decomposition of organic waste in dumping sites and landfills prompts the uncontrolled emission of greenhouse gases which enhances global warming and related issues. The present investigation estimated the total landfill gas, methane, carbon dioxide and non-methane organic compounds emissions from Mahmood Booti dumping site located at Lahore, Pakistan from 1996 to 2045. LandGEM 3.02 model was utilized to evaluate the gas emission with the volumetric methane 50%, production potential (170 m3/Mg), and methane generation rate (0.050/year). The findings demonstrated that organic and food wastes had the maximum quantity in the solid waste stream (63.46%). Methane measured from solid waste was 1.150E+03 (Mg/year) in 1997 in the first year after waste was accepted by landfill while the maximum methane generation rate happened from 2014 to 2018, i.e., from 4.049×104 to 4.654×104 Mg/year, respectively. The study finding highlighted that all gases emissions have an increasing/rising trend up to 2021 and then gradually their level will decrease because most of the organic fractions of solid waste would degrade with time. The findings of this study can be used to identify the impacts and contribution of MBODS in the global emission of greenhouse gases. The study concludes that proper management of landfill gas will not only decreases greenhouse gas emissions, diminishing adverse impacts on public health but can also be used as a sustainable energy source.

Original languageEnglish
Pages (from-to)69-81
Number of pages13
JournalEnvironment Protection Engineering
Volume48
Issue number1
Early online date1 Jan 2022
DOIs
Publication statusPublished - Jan 2022

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