Understanding natural and induced gas migration through landfill cover materials: the basis for improved landfill gas recovery

Conference · Wed Jan 01 00:00:00 EST 1986

OSTI ID:7245800

Bogner, J E

Vertical pressure and concentration gradients in landfill cover materials are being examined at the Mallard North Landfill in Dupage County, IL. The goal of this project is to understand venting of landfill gas and intrusion of atmospheric gases into the landfill in response to changing meteorological conditions (particularly barometric pressure and precipitation) and pumping rates at recovery wells. Nests of probes for directly measuring soil gas pressures have been installed in areas of fractured and unfractured silty clay till cover materials. The probes are at three depths: shallow (0.6 m), intermediate (1.2 m), and deep (in the top of the refuse). Preliminary results from fall 1985 suggest that soil gas pressures respond quickly to changes in barometric pressure but that concentrations of methane, carbon dioxide, nitrogen, and oxygen respond more slowly to changing soil moisture conditions. An important near-surface process that limits the total amount of methane available to a gas recovery system is the activity of methanotrophs (methane-oxidizing bacteria) in oxygenated cover materials. The results of this project will be used to quantify landfill mass balance relations, improve existing predictive models for landfill gas recovery systems, and improve landfill cover design for sites where gas recovery is anticipated.

• Research Organization: Argonne National Lab., IL (USA)
• DOE Contract Number: W-31-109-ENG-38
• OSTI ID: 7245800
• Report Number(s): CONF-860810-35; ON: DE87001517
• Resource Relation: Conference: Intersociety energy conversion engineering conference, San Diego, CA, USA, 25 Aug 1986; Other Information: Portions of this document are illegible in microfiche products
• Country of Publication: United States
• Language: English

Related Subjects

09 BIOMASS FUELS
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
INTERMEDIATE BTU GAS
RECOVERY
SANITARY LANDFILLS
DEGASSING
CHEMICAL COMPOSITION
DIFFUSION
METHANE
MOISTURE
OXYGEN
SOILS
ALKANES
ELEMENTS
FLUIDS
FUEL GAS
FUELS
GAS FUELS
GASES
HYDROCARBONS
MANAGEMENT
NONMETALS
ORGANIC COMPOUNDS
WASTE DISPOSAL
WASTE MANAGEMENT
090122* - Hydrocarbon Fuels- Preparation from Wastes or Biomass- (1976-1989)
320604 - Energy Conservation
Consumption
& Utilization- Municipalities & Community Systems- Municipal Waste Management- (1980-)