On-site and ground-based remote sensing measurements of methane emissions from four biogas plants: a comparison study

Anders Michael Fredenslund*, Jørgen Hinge, Magnus A. Holmgren, Søren G. Rasmussen, Charlotte Scheutz

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

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Abstract

Methods for quantifying methane (CH4) emissions from biogas plants are needed, in order to ensure that emissions are within acceptable levels and to identify options for emission mitigation. Two emission measuring approaches were used at four biogas plants: an on-site approach, whereby emission sources were identified and subsequently quantified one at a time, and a ground-based remote sensing approach, which was applied to measure total CH4 emissions. The emissions were between 5.5 to 13.5 kg CH4 h-1 from the four plants, measured using ground-based remote sensing. Even though the measurements were performed on the same days at each facility, the sum of on-site emission rates varied between the remote sensing measurements (up to ∼100%). Several factors may have caused this difference: emission sources not measured using an on-site approach and short-time emission variation. On-site measurements showed that the majority of the emissions often occurred from just a few sources
Original languageEnglish
JournalBioresource Technology
Volume270
Pages (from-to)88-95
ISSN0960-8524
DOIs
Publication statusPublished - 2018

Keywords

  • Method comparison
  • Anaerobic digestion
  • Fugitive emissions
  • Tracer gas dspersion method

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