Greenhouse effect reduction by recovering energy from waste landfills in Pakistan

Journal article


Zuberi, MJS and Ali, SF (2015). Greenhouse effect reduction by recovering energy from waste landfills in Pakistan. Renewable and Sustainable Energy Reviews. 44, pp. 117-131. https://doi.org/10.1016/j.rser.2014.12.028
AuthorsZuberi, MJS and Ali, SF
Abstract

© 2014 Elsevier Ltd. All rights reserved. Landfills all around the world are one of the major sources that contribute towards global warming and climate change. Although landfilling should be prioritized last in the waste management hierarchy due to highest greenhouse gas emissions as compared to other waste management systems it is still very common around the world. In this study, methane emissions are estimated by applying First Order Decay model to landfills in Pakistan over the latest data available by Pakistan Environmental Protection Agency. Results demonstrate that nearly 14.18 Gg of methane is emitted from the landfills in Pakistan each year. By combusting this methane in the form of biogas collected from the landfills as a waste management scheme we can reduce greenhouse effect up to ∼88%. Same percentage is observed when we apply the similar analysis over the potentially improved practice. Also, Pakistan is facing severe economic crises due to continuous increasing gap between energy demand and supply. Demand is increasing exponentially while supply is observed to remain constant over the last few years due to frozen capacity in spite of having significant renewable/alternate energy resources. Current electricity shortfall has reached up to 6000 MW. Present operational landfills in Pakistan can only contribute up to ∼0.1% to cater the total deficit which does not make any significant difference but if 75% of the total waste generated today is collected and 50% of it landfilled then Pakistan has the potential to produce ∼83.17 MW of power that can contribute up to 1.4% to overcome the current power shortage. The outcomes of this paper may also be applicable to other developing countries having similar resources.

Year2015
JournalRenewable and Sustainable Energy Reviews
Journal citation44, pp. 117-131
PublisherElsevier BV
ISSN1364-0321
Digital Object Identifier (DOI)https://doi.org/10.1016/j.rser.2014.12.028
Publication dates
Print02 Jan 2015
Publication process dates
Accepted12 Dec 2014
Deposited27 Nov 2020
Accepted author manuscript
License
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Open
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