Presented by Dr. Jean Bogner, Research Professor, Dept. of Earth & Environmental Sciences, University of Illinois - Chicago; and President, Landfill +, Inc.
Nov 7, 2011
Nobel Laureate Dr. Jean Bogner, will discuss her current research work on landfill methane emissions and oxidation. Landfill methane is the third largest source of anthropogenic methane is the U.S., also accounting for approximately 1-2% of total global greenhouse gas emissions. Site-specific rates are dependent on the efficiency of engineered landfill gas extraction systems, the thickness and physical properties of cover materials, and seasonal methane oxidation rates in cover soils. Small-scale (m2) emission rates (as g CH4 m-2 d-1) can vary by 6-7 orders of magnitude, and in some cases, landfills can be potent local sources of methane. Oxidation rates in cover soils can also vary over several orders of magnitude, with the highest rates in the literature documented from landfill cover soils. Thus, landfills provide a fascinating setting in which to measure and model the competing dynamics of transport and oxidation in an engineered soil system.