EPA Science Inventory

Evaluation Of Landfill Gas Decay Constant For Municipal Solid Waste Landfills Operated As Bioreactors

Citation:

TOLAYMAT, T. M., R. Green, G. Hater, M. Barlaz, P. Black, D. Bronson, AND J. Powell. Evaluation Of Landfill Gas Decay Constant For Municipal Solid Waste Landfills Operated As Bioreactors. JOURNAL OF AIR AND WASTE MANAGEMENT. Air & Waste Management Association, Pittsburgh, PA, 60(1):91-97, (2010).

Description:

Prediction of the rate of gas production from bioreactor landfills is important to optimize energy recovery and to estimate greenhouse gas emissions. Landfill gas (LFG) composition and flow rate were monitored for four years for a conventional and two bioreactor landfill landfills cells at the Outer Loop Landfill in Louisville, KY. The ultimate yield (Lo) was estimated from the biochemical methane (CH4) potential of freshly buried refuse and the decay rate constant (k) was estimated from CH4 production rate data using a quasi-Newton method. The estimated decay rate in the conventional cell (0.043 yr-1) was comparable to the AP-42 default value of 0.04 yr-1, while the estimates for the bioreactor cells were substantially higher (~0.11 yr-1). The more rapid decomposition in the bioreactor cells suggests the importance of having a LFG collection system operational once the waste receives enough moisture to affect the decay rate, this will reduce greenhouse gas emissions and enhance energy recovery.

Purpose/Objective:

To optimize energy recovery and to estimate greenhouse gas emissions from bioreactor landfills at the Outer Loop Landfill in Louisville, KY.

URLs/Downloads:

Journal Access   Exit

Record Details:

Record Type: DOCUMENT (JOURNAL/PEER REVIEWED JOURNAL)
Start Date: 01/01/2010
Completion Date: 01/01/2010
Record Last Revised: 03/09/2010
Record Created: 11/07/2007
Record Released: 11/07/2007
OMB Category: Other
Record ID: 186425

Organization:

U.S. ENVIRONMENTAL PROTECTION AGENCY

OFFICE OF RESEARCH AND DEVELOPMENT

NATIONAL RISK MANAGEMENT RESEARCH LABORATORY

LAND REMEDIATION AND POLLUTION CONTROL DIVISION

WASTE MANAGEMENT BRANCH