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Effect of biodiesel and bioethanol on exhaust emissions
ETC/ACC Technical Paper 2008/5
Released: 2008/11/25: See the report
Abstract:
The objective of the report is to collect information
on the effect of biofuels on tailpipe regulated and non-regulated pollutants. In principle, the report is split
in two parts, one part which describes the effect of biodiesel on emissions from diesel vehicles and one
part that describes the effect of bioethanol on emissions. The latter is further split into two subsections,
one describing the bioethanol blend with gasoline and one with diesel. The findings of this study are
summarized in a list of conclusions and recommendations at the end of the report. In summary, there
have been several measurements conducted so far in characterizing the effect of biofuels on emissions.
The results of the studies are often inconclusive as they present different trends for phenomenally similar
testing conditions. A more detailed look on the results shows that any effects depend on biofuel
properties, vehicle technology (combustion and aftertreatment system) and operation conditions. The
report recommends more studies to understand the effects and aims to guide future policy development
in this direction.
Prepared by: Marina Kousoulidou, Giorgos Fontaras, Giorgos Mellios, Leonidas Ntziachristos (AUTH-LAT, a ETC/ACC Consortium partner)
Published by: ETC/ACC, November 2008, 52 pp.