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Waste Management & Research
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Biotic systems to mitigate landfill methane emissions

Marion Huber-Humer

BOKU-University Vienna, Institute of Waste Management, Vienna, Austria, marion.huber-humer{at}boku.ac.at

Julia Gebert

University of Hamburg, Institute of Soil Science, Hamburg, Germany

Helene Hilger

Department of Civil and Environmental Engineering, University of North Carolina Charlotte, Charlotte, NC, USA

Landfill gases produced during biological degradation of buried organic wastes include methane, which when released to the atmosphere, can contribute to global climate change. Increasing use of gas collection systems has reduced the risk of escaping methane emissions entering the atmosphere, but gas capture is not 100% efficient, and further, there are still many instances when gas collection systems are not used. Biotic methane mitigation systems exploit the propensity of some naturally occurring bacteria to oxidize methane. By providing optimum conditions for microbial habitation and efficiently routing landfill gases to where they are cultivated, a number of bio-based systems, such as interim or long-term biocovers, passively or actively vented biofilters, biowindows and daily-used biotarps, have been developed that can alone, or with gas collection, mitigate landfill methane emissions. This paper reviews the science that guides bio-based designs; summarizes experiences with the diverse natural or engineered substrates used in such systems; describes some of the studies and field trials being used to evaluate them; and discusses how they can be used for better landfill operation, capping, and aftercare.

Key Words: landfill gas • methane oxidation • biocover • biofilter • bio-window • landfill aftercare • wmr 1317—2

Waste Management & Research, Vol. 26, No. 1, 33-46 (2008)
DOI: 10.1177/0734242X07087977
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Home page
 J. Environ. Qual.Home page
J. P. Chanton, D. K. Powelson, and R. B. Green
Methane Oxidation in Landfill Cover Soils, is a 10% Default Value Reasonable?
J. Environ. Qual., February 25, 2009; 38(2): 654 - 663.
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