| Methane balance of a bioreactor landfill in Latin America. | |
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MedLine Citation:
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PMID: 18512438 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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This paper presents results from a methane (CH4) gas emission characterization survey conducted at the Loma Los Colorados landfill located 60 km from Santiago, Chile. The landfill receives approximately 1 million metric tons (t) of waste annually, and is equipped with leachate control systems and landfill gas collection systems. The collected leachate is recirculated to enable operation of the landfill as a bioreactor. For this study, conducted between April and July 2000, a total of 232 surface emission measurements were made over the 23-ha surface area of the landfill. The average surface flux rate of CH4 emissions over the landfill surface was 167 g x m(-2) x day(-1), and the total quantity of surface emissions was 13,320 t/yr. These values do not include the contribution made by "hot spots," originating from leachate pools caused by "daylighting" of leachate, that were identified on the landfill surface and had very high CH4 emission rates. Other point sources of CH4 emissions at this landfill include 20 disconnected gas wells that vent directly to the atmosphere. Additionally, there are 13 gas wells connected to an incinerator responsible for destroying 84 t/yr of CH4. The balance also includes CH4 that is being oxidized on the surface of the landfill by meth-anotrophic bacteria. Including all sources, except leachate pool emissions, the emissions were estimated to be 14,584 t/yr CH4. It was estimated that less than 1% of the gas produced by the decomposition of waste was captured by the gas collection system and 38% of CH4 generated was emitted to the atmosphere through the soil cover. |
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Authors:
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Jenny Sanderson; Patrick Hettiaratchi; Carlos Hunte; Omar Hurtado; Alejandro Keller |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Journal of the Air & Waste Management Association (1995) Volume: 58 ISSN: 1096-2247 ISO Abbreviation: J Air Waste Manag Assoc Publication Date: 2008 May |
Date Detail:
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Created Date: 2008-06-02 Completed Date: 2008-07-18 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9503111 Medline TA: J Air Waste Manag Assoc Country: United States |
Other Details:
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Languages: eng Pagination: 620-8 Citation Subset: IM |
Affiliation:
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Department of Civil Engineering, Engineering Research and Education, University of Calgary, Calgary, Alberta, Canada. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Bioreactors* Carbon Dioxide / analysis Chile Incineration Latin America Methane / analysis* Refuse Disposal* Soil Microbiology Water Pollutants, Chemical / analysis |
| Chemical | |
Reg. No./Substance:
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0/Water Pollutants, Chemical; 124-38-9/Carbon Dioxide; 74-82-8/Methane |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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