Application Of Methanotrophic Biofilters To
Reduce GHG Generated By Landfill In
Quebec City (Canada)
Author(s)
N. Turgeon, Y. Le Bihan, G. Buelna, C. Bourgault,
S. Verreault, P. Lessard, J. Nikiema & M. Heitz
Abstract
Compared to carbon dioxide (CO2), methane (CH4) is a strong greenhouse gas
(GHG) and landfills are one of the major anthropogenic sources of atmospheric
CH4 produced by anaerobic degradation of organic waste. In Canada as in many
countries around the world, programs and regulations are implemented to force
capture and burning of landfill gas (LFG). However, when thermal oxidation
(flaring or energetic valorisation) is not possible (i.e. low CH4 concentration or
flowrate), microbial methane oxidation by methanotrophic biofilters represents a
new technology that holds great promises for GHG reduction and air pollution
control of LFG. Exploratory work done in CRIQ laboratories (Quebec Canada)
allowed testing different types of mediums (organic and inorganic) for the design
of methanotrophic biofilters. Following this initiative, pilot scale project was
undertaken in 2009. The objective was to evaluate, using a prototype installed in
a closed landfill (Beauport, Quebec City), the technical and economic feasibility
of implantation of methanotrophic biofilter for the treatment of LFG. Testing
protocol has been implemented over a period of 83 d (from September to
November 2009). The collected data were used to evaluate conversion rates (up
to 80%) and the maximum elimination capacity (ECmax = 66 g CH4/m3/h).
Large-scale technology demonstration work is planned for 2011-2012 to
Keywords
methane, landfill gas, greenhouse gas, methanotrophic bacteria, biofilters, nitrous oxide
Related Book
Other papers in this volume
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