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ISGS Seminar - Development, Progression, and Containment of Elevated Temperatures in Landfills

Event Type
Seminar/Symposium
Topics
engineering geology, landfills
Sponsor
Illinois State Geological Survey, Prairie Research Institute
Location
Leighton Conference Room (room 101), Natural Resources Building
Date
May 22, 2017   11:00 am - 12:00 pm  
Speaker
Dr. Timothy Stark, Department of Civil and Environmental Engineering, University of Illinois Urbana-Champaign
Contact
Andrew Stumpf
E-Mail
astumpf@illinois.edu
Phone
217-244-6462
Views
25
Originating Calendar
Prairie Research Institute - Events

Elevated temperatures in various landfill types can produce obnoxious odors, toxic gases, and aggressive leachates, as well as damage landfill infrastructure. They also can result in expensive remedial measures and warrant permanent closure of the facility.  This presentation will discuss mechanisms that can lead to elevated temperatures in landfills using recent case histories and present associated trends in gas composition, leachate collection, settlement, and slope movement. In general, landfill gas composition changes from predominantly methane (50-60% v/v) and carbon dioxide (40-55% v/v) to a composition of carbon dioxide (60-80% v/v), hydrogen (10-35% v/v), and carbon monoxide (> 1,500 ppmv) as temperatures elevate. As waste temperatures increase, gas and leachate pressures also increase, resulting in odors, leachate outbreaks, and possible slope instability. Based on observed management, operation, and maintenance of elevated temperature facilities, various operational techniques will be presented for isolating and containing the elevated temperatures.

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