Life-Cycle Assessment of a Regulatory Compliant U.S. Municipal Solid Waste Landfill

Autor:	James W. Levis, Morton A. Barlaz, Yixuan Wang
Rok vydání:	2021
Předmět:	Energy recovery Municipal solid waste Waste management Global warming General Chemistry Solid Waste Combustion Refuse Disposal Waste Disposal Facilities Landfill gas Greenhouse gas Environmental Chemistry Environmental science Methane Life-cycle assessment Waste disposal
Zdroj:	Environmental Science & Technology. 55:13583-13592
ISSN:	1520-5851 0013-936X
DOI:	10.1021/acs.est.1c02526
Popis:	Landfills receive over half of all U.S. municipal solid waste (MSW) and are the third largest source of anthropogenic methane emissions. Life-cycle assessment (LCA) of landfills is complicated by the long duration of waste disposal, gas generation and control, and the time over which the engineered infrastructure must perform. The objective of this study is to develop an LCA model for a representative U.S. MSW landfill that is responsive to landfill size, regulatory thresholds for landfill gas (LFG) collection and control, practices for LFG management (i.e., passive venting, flare, combustion for energy recovery), and four alternative schedules for LFG collection well installation. Material production required for construction and operation contributes 68-75% to toxicity impacts, while LFG emissions contribute 50-99% to global warming, ozone depletion, and smog impacts. The current non-methane organic compound regulatory threshold (34 Mg yr-1) reduces methane emissions by
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::63b163da2c0a24259cc87ffeff1b3214 https://doi.org/10.1021/acs.est.1c02526 Zobrazit plný text záznamu