Abstract

Biogas is a multifunctional energy carrier currently used for co-generation or compressed biomethane as vehicle fuel. Gas-to-liquid (GTL) technology enables conversion of biogas into other energy carriers with higher energy density, facilitating fuel distribution.The energy efficiency and global warming potential (GWP) for conversion of biogas to compressed biogas (CBG), liquefied biogas (LBG), Fischer-Tropsch diesel (FTD), methanol and dimethyl ether (DME) were studied in a life cycle perspective covering the technical system from raw biogas to use in city buses.CBG, methanol and DME showed the best specific fuel productivity. However, when fuel distribution distances were longer, DME, LBG and methanol showed the best energy balance. Methanol, FTD and DME emitted half the GWP of LBG and CBG. Choice of electricity mix had a large impact on GWP performance. Overall, taking into account the different impact categories, combustion properties and fuel yield from raw biogas, DME showed the best performance of the fuel conversion scenarios assessed. (C) 2014 Elsevier B.V. All rights reserved.

Keywords

Biogas; GTL fuels; LCA; Energy performance; Global warming potential

Published in

Fuel Processing Technology
2015, Volume: 132, pages: 74-82
Publisher: ELSEVIER SCIENCE BV

SLU Authors

• Ahmadi Moghaddam, Elham

  • Department of Energy and Technology, Swedish University of Agricultural Sciences
    

• Ahlgren, Serina

  • Department of Energy and Technology, Swedish University of Agricultural Sciences
    

• Nordberg, Åke

  • Department of Energy and Technology, Swedish University of Agricultural Sciences
    

Sustainable Development Goals

Ensure access to affordable, reliable, sustainable and modern energy for all


UKÄ Subject classification

Energy Systems


Publication identifier

DOI: https://doi.org/10.1016/j.fuproc.2014.12.014

Permanent link to this page (URI)

https://res.slu.se/id/publ/66564