Lateral gas transport in soil adjacent to an old landfill: factors governing gas migration

Mette Christophersen, Peter Kjeldsen

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

Field experiments investigating lateral gas transport in soil adjacent to an old landfill in Denmark during a one-year period were conducted. A significant seasonal variation, with low concentrations of methane and high concentrations of carbon dioxide in the summer, caused by methane oxidation was observed. There was a good correlation between pressure above the barometric pressure and the methane concentration in the soil, indicating that advective flow was the controlling process. This was confirmed by calculations. Diurnal measurement during a drop in barometric pressure showed that lateral migration of landfill gas was a very dynamic system and the concentrations of LFG at a specific place and depth changed dramatically within a very short time. The experiments showed that change in barometric pressure was an important factor affecting gas migration at the Skellingsted landfill in Denmark.
Original languageEnglish
JournalWaste Management and Research
Volume19
Issue number6
Pages (from-to)579-594
ISSN0734-242X
Publication statusPublished - 2001

Keywords

  • barometric pressure
  • lateral migration
  • seasonal variation
  • methane oxidation
  • Denmark
  • advective flow
  • field investigation
  • Landfill gas

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