Title: Biodiesel From Used Frying Oil
Author(s): Dr. Sams, J. Tieber, and M. Mittelbach
Publication Date: Nov 1996
The aims of this project were to use chemical examinations to establish criteria
for assessing the suitability of used frying oil (UFO) and fats for producing methyl
ester, and to use serial examinations to detect interconnections between the
quality of the source products and the fuel parameters of the resulting used frying
oil methyl ester (UFO-ME). The UFO samples gained after transesterification
showed very homogeneous results which are necessary for successful
processing. Tests show most of the samples have met the standards, except a
few whose slightly higher values were attributed to changes in the reaction
conditions rather than changes in oil quality.
The engine-related results lead to the following comparisons between biofuels
and diesel: The biofuels rapeseed methyl ester (RME) and UFO-ME produce
better results in real world, dynamic conditions than in stationary test rig tirals.
With biodiesel RME and UFO-ME, hydrocarbons and carbon dioxide raw
emissions, soot emissions are lower than diesel. PAH emissions were roughly
the same for diesel and RME and significantly lower for UFO-ME. In dynamic
conditions with oxicate, RME and UFO-ME show advantages with regard to NOx
and particulate emissions. However, in stationary tests and tests without oxicate
there are disadvantages to using RME and UFO-ME.
Market Segment: General Interest
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