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Titre du document / Document title

Methane generation in landfills

Auteur(s) / Author(s)

THEMELIS Nickolas J. (1) ; ULLOA Priscilla A. (1) ;

Affiliation(s) du ou des auteurs / Author(s) Affiliation(s)

(1) Earth Engineering Center and Department of Earth and Environmental Engineering, Columbia University, New York, NY 10027, ETATS-UNIS

Résumé / Abstract

Methane gas is a by-product of landfilling municipal solid wastes (MSW). Most of the global MSW is dumped in non-regulated landfills and the generated methane is emitted to the atmosphere. Some of the modern regulated landfills attempt to capture and utilize landfill biogas, a renewable energy source, to generate electricity or heat. As of 2001, there were about one thousand landfills collecting landfill biogas worldwide. The landfills that capture biogas in the US collect about 2.6 million tonnes of methane annually, 70% of which is used to generate heat and/or electricity. The landfill gas situation in the US was used to estimate the potential for additional collection and utilization of landfill gas in the US and worldwide. Theoretical and experimental studies indicate that complete anaerobic biodegradation of MSW generates about 200 Nm3 of methane per dry tonne of contained biomass. However, the reported rate of generation of methane in industrial anaerobic digestion reactors ranges from 40 to 80 Nm3 per tonne of organic wastes. Several US landfills report capturing as much as 100 Nm3 of methane per ton of MSW landfilled in a given year. These findings led to a conservative estimate of methane generation of about 50 Nm3of methane per ton of MSW landfilled. Therefore, for the estimated global landfilling of 1.5 billion tones annually, the corresponding rate of methane generation at landfills is 75 billion Nm3. Less than 10% of this potential is captured and utilized at this time.

Revue / Journal Title

Renewable energy    ISSN  0960-1481 

Source / Source

2007, vol. 32, no7, pp. 1243-1257 [15 page(s) (article)] (27 ref.)

Langue / Language

Anglais

Editeur / Publisher

Elsevier, Oxford, ROYAUME-UNI  (1991) (Revue)

Mots-clés anglais / English Keywords

America

;

North America

;

Project

;

United States

;

World

;

Geographic distribution

;

Production unit

;

Energetic efficiency

;

Anaerobic fermentation

;

Production capacity

;

Urban waste

;

Solid waste

;

Production

;

Biogas

;

Mots-clés français / French Keywords

Amérique

;

Amérique du Nord

;

Projet

;

Etats Unis

;

Monde

;

Répartition géographique

;

Unité production

;

Rendement énergétique

;

Fermentation anaérobie

;

Capacité production

;

Déchet urbain

;

Déchet solide

;

Production

;

Biogaz

;

Mots-clés espagnols / Spanish Keywords

America

;

America del norte

;

Proyecto

;

Estados Unidos

;

Mundo

;

Distribución geográfica

;

Unidad producción

;

Rendimiento energético

;

Fermentación anaerobia

;

Capacidad producción

;

Desperdicio urbano

;

Residuos sólidos

;

Producción

;

Biogás

;

Mots-clés d'auteur / Author Keywords

Landfill gas

;

Renewable energy

;

Municipal solid waste

;

Biogas

;

Methane emissions

;

Localisation / Location

INIST-CNRS, Cote INIST : 20690, 35400014701214.0110

Nº notice refdoc (ud4) : 18568642



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