Landfill methane emissions measured by enclosure and atmospheric tracer methods

Methane (CH4) emissions were measured from the Nashua, New Hampshire municipal landfill using static enclosure and atmospheric tracer methods. The spatial variability of emissions was also examined using geostatistical methods. One hundred and thirty nine enclosure measurements were performed on a regular grid pattern over the emitting surface of the landfill resulting in an estimate of whole landfill emissions of 15,800 L CH4 min−1. Omnidirectional variograms displayed spatial correlation among CH4 fluxes below a separation distance of 7 m. Eleven tracer tests, using sulfur hexafluoride (SF6) as a tracer gas, resulted in a mean emissions estimate of 17,750 L CH4 min−1. The favorable agreement between the emission estimates was further refined using the observed relationship between atmospheric pressure and CH4 flux. This resulted in a pressure-corrected tracer flux estimate of whole landfill emissions of 16,740 L CH4 min−1.

[1]  Y. Tohjima,et al.  Estimation of methane discharge from a plume: A case of landfill , 1993 .

[2]  Alan Young.  The effects of fluctuations in atmospheric pressure on landfill gas migration and composition , 1992 .

[3]  W. Owen,et al.  Fundamentals of Anaerobic Digestion of Wastewater Sludges , 1986 .

[4]  F. Rovers,et al.  Gas production during refuse decomposition , 1973 .

[5]  Eville Gorham,et al.  Methane flux from Minnesota Peatlands , 1988 .

[6]  Clayton V. Deutsch,et al.  GSLIB: Geostatistical Software Library and User's Guide , 1993 .

[7]  M. Khalil,et al.  Atmospheric methane in the recent and ancient atmospheres Concentrations, trends, and interhemispheric gradient , 1984 .

[8]  R. Peer,et al.  Development of an empirical model of methane emissions from landfills. Final report Mar-Dec 91 , 1992 .

[9]  Patrick M. Crill,et al.  Quantifying the effect of oxidation on landfill methane emissions , 1996 .

[10]  R. Gillespie,et al.  Composting yard trimmings and kitchen residuals in Baden-Baden , 1995 .

[11]  G. A. Zavarzin,et al.  Emission of methane into the atmosphere from landfills in the former USSR , 1993 .

[12]  B. Lamb,et al.  A Fast Response Continuous Analyzer for Halogenated Atmospheric Tracers , 1985 .

[13]  T. Howard,et al.  Measurement of Hydrocarbon Emissions Fluxes from Refinery Wastewater Impoundments Using Atmospheric Tracer Techniques , 1992 .

[14]  C E Kolb,et al.  Atmospheric methane measurement instrument using a Zeeman-split He-Ne laser. , 1989, Applied optics.

[15]  Robert Steuteville,et al.  The state of garbage in America , 1995 .

[16]  R. M. Miller,et al.  Studies of soil gas, gas generation, and shallow microbial activity at Mallard North Landfill, Dupage County, Illinois , 1990 .

[17]  B. Lamb,et al.  Isoprene emission fluxes determined by an atmospheric tracer techniquE , 1986 .

[18]  C E Kolb,et al.  Development of atmospheric tracer methods to measure methane emissions from natural gas facilities and urban areas. , 1995, Environmental science & technology.

[19]  J. Gord,et al.  Dual phase gas diffusion flow injection analysis-hydride generation atomic absorption spectrometry , 1986 .

[20]  P. Crutzen,et al.  The Production of Methane From Solid Wastes , 1987 .

[21]  R. Cicerone,et al.  Biogeochemical aspects of atmospheric methane , 1988 .

[22]  J. Barry McManus,et al.  Field measurements of atmospheric methane with a HeNe laser-based real-time instrument , 1993, Other Conferences.