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Indirect emission of carbon dioxide from Marcellus shale gas development

In this Technical Report from the Agriculture, Energy, & Environment Program at Cornell University the emissions of carbon dioxide associated with all fuel combustion associated with the shale gas life-cycle focusing on the Marcellus shale are estimated as a case study.

Key findings:

  • Total indirect CO2 emissions are estimated as between 1.17 and 1.69 g C MJ-1 (LHV), depending upon whether or not the raw gas requires processing.
  • Compared to the direct (i.e. end-use combustion) CO2 emissions: 15 g C MJ-1 (LHV), the indirect emissions are small, but not trivial.
  • Our estimated indirect CO2 emissions from shale gas are 0.04 to 0.45 g C MJ-1 greater than that reported for conventional gas (Woods et al., 2011).
  • Still, a far greater part of the greenhouse gas footprint of shale gas comes from methane venting and leakage (Howarth et al., 2011).

Bibliography:
Renee L. Santoro, Robert W. Howarth, and Anthony Ingraffea
Indirect emission of carbon dioxide from Marcellus shale gas development
Published by Cornell University, Jun 30, 2011

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