Quality Improvement and Investigation of the Correlations between the Main Properties (Analytical and Performance) of Biodiesels Originating from Different Sources pp. 299-322
Authors: (Sándor Kovacs, Ferenc Kovacs, György Polczmann, Jenő Hancsok, University of Pannonia, Institute of Chemical, and Process Engineering, Department of MOL Hydrocarbon, and Coal Processing, Hungary, and others)
Abstract: In the last one and a half decades efforts for applying biofuels have increased all over the world. The main reasons of this are the rising demands for gas oil and the bio regulations in the European Union. Nowadays approx. 95% of the used bio blending components in diesel fuels is FAME (biodiesel). The use of bio gas oils (mixture of n-and i-paraffins) is gradually increasing. The biodiesels are produced by catalytic transesterification of different triglyceride-containing feedstocks (e.g. vegetable oils, used frying oils, animal fats, algae oils, brown grease, etc.) mainly with methanol. Many factors affect the quality and performance properties of these first generation biofuel; e.g. the type of the feedstock, and the alcohol; the transesterification technology and the catalytic system. The quality of the feedstock has the strongest effect on final FAME quality.
The aim of our systematic research and development activity was to produce high quality biodiesels. The feedstocks from various sources were transesterified in the presence of Candida antarctica immobilized lipase in a solvent free medium. The effect of the purity and the fatty acid composition of different feedstocks on the quality and performance properties of FAME were investigated.