Developing a Design Approach to Reduce Methane Emissions from California Landfills

Observations on the methane oxidation capacity of landfill soils

“…Abichou et al (2010) has developed such relationships for several cover types for the different climates of the state of California. The results from the field data and the modeling results indicate that percent oxidation should not be considered as a constant (10% or any other single value).…”

Modeling the effects of vegetation on methane oxidation and emissions through soil landfill final covers across different climates

“…Generally, CH 4 oxidation rates increase with rising temperature (De Visscher et al, 2001;Whalen et al, 1990;Nozhevnikova et al, 1993;Börjesson and Svensson, 1997;Visvanathan et al, 1999;Czepiel et al, 1996;Humer and Lechner, 2001;Boeckx et al, 1996;Nesbit, 1992;Spokas and Bogner, 2011;Albanna and Fernandes, 2009;Schnell and King, 1996;Borjesson et al, 2004;De Visscher and Van Cleemput, 2003;Dunfield et al, 1993;Christophersen et al, 2000;Abichou et al, 2010;Powelson et al, 2006). Czepiel et al (1996) and Abichou et al (2010) reported that oxidation rate increased as temperature increased to 36°C and that CH 4 oxidation essentially stopped when temperature reached 45°C.…”

“…Soil water content and temperature profile Water content is a very important factor affecting CH 4 oxidation in landfill cover soils. Abichou et al (2010) reported that little to no bacterial activity (very low oxidation rate) was occurring when the gravimetric water content was lower than 10%. Czepiel et al (1996) and Boeckx et al (1996) reported a significant drop in oxidation capacity at water contents lower than 5% and credited that to water stress.…”

“…Czepiel et al (1996) and Boeckx et al (1996) reported a significant drop in oxidation capacity at water contents lower than 5% and credited that to water stress. Abichou et al (2010) showed that microbial activity seems to increase with increasing water content and reaches an upper limit or when the soil reaches a water content higher than 18-20%. These results are consistent with other literature data indicating a maximum oxidation rate when the water content is in the range of 10-20% (gravimetric) (Boeckx et al, 1996;Park et al 2002;Schnell and King, 1996;Albanna and Fernandes, 2009).…”

“…The main objective of this study was to use a http://dx.doi.org/10.1016/j.wasman.2014.11.002 0956-053X/Ó 2014 Elsevier Ltd. All rights reserved. modeling approach similar to the one employed by Abichou et al (2010Abichou et al ( , 2013 to compare methane oxidation in simulated vegetated and non-vegetated landfill final covers across climatic zones of the United States. The second objective of the study was to separate the increase in methane oxidation associated with the change of the physical properties of the vegetative soil layer from that caused by the increase of organic matter associated with vegetated soil layers.…”