全球智库信息集成服务系统(G2TT): Global methane emissions from pit latrines.

G2TT

来源类型	Article
规范类型	其他
DOI	10.1021/es501549h
	Global methane emissions from pit latrines.
	Reid MC; Guan K; Wagner F; Mauzerall DL
发表日期	2014
出处	Environmental Science & Technology
出版年	2014
语种	英语
摘要	Pit latrines are an important form of decentralized wastewater management, providing hygienic and low-cost sanitation for approximately one-quarter of the global population. Latrines are also major sources of the greenhouse gas methane (CH4) from the anaerobic decomposition of organic matter in pits. In this study, we develop a spatially explicit approach to account for local hydrological control over the anaerobic condition of latrines and use this analysis to derive a set of country-specific emissions factors and to estimate global pit latrine CH4 emissions. Between 2000 and 2015 we project global emissions to fall from 5.2 to 3.8 Tg/y, or from 2% to 1% of global anthropogenic CH4 emissions, due largely to urbanization in China. Two and a half billion people still lack improved sanitation services, however, and progress toward universal access to improved sanitation will likely drive future growth in pit latrine emissions. We discuss modeling results in the context of sustainable water, sanitation, and hygiene development and consider appropriate technologies to ensure hygienic sanitation while limiting CH4 emissions. We show that low-CH4 on-site alternatives like composting toilets may be price competitive with other CH4 mitigation measures in organic waste sectors, with marginal abatement costs ranging from 57 to 944 $/ton carbon dioxide equivalents (CO2e) in Africa and 46 to 97 $/ton CO2 in Asia.
主题	Mitigation of Air Pollution (MAG) ; Air Quality & ; Greenhouse Gases (AIR)
URL	http://pure.iiasa.ac.at/id/eprint/10872/
来源智库	International Institute for Applied Systems Analysis (Austria)
引用统计
资源类型	智库出版物
条目标识符	http://119.78.100.153/handle/2XGU8XDN/130008
推荐引用方式 GB/T 7714	Reid MC,Guan K,Wagner F,et al. Global methane emissions from pit latrines.. 2014.