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Inter-University Research Center on Pollution and Environment -Mauro Felli- CIRIAF, University of Perugia, Via G. Duranti 63, Perugia 06125, Italy


Department of Engineering, University of Roma TRE, Via della Vasca Navale 79, Rome 00146, Italy


Author to whom correspondence should be addressed.

Academic Editor: Arthur J. Ragauskas

Abstract Biodiesel is obtained by the process of transesterification of vegetable oils and animal fats and crude glycerol is the main by-product of the biodiesel manufacturing chain. As a result glycerol production has rapidly increased in the last decades. This work focuses on the development and the validation of a process to convert biodiesel-derived glycerol into a fuel for internal combustion engines. In order to obtain a higher conversion efficiency it was necessary to convert crude glycerol to tert-butyl ethers by means of an etherification process that was carried out in the laboratory. Then the obtained glycol-ethers mixture GEM was blended with a commercial diesel fuel to improve its thermal efficiency. In this paper a life cycle analysis for these GEM-diesel blends was carried out using a Life Cycle Assessment LCA methodology, in order to evaluate the environmental impacts of these new oxy-fuels; from GEM production to GEM use as an additive for diesel fuel. The LCA results highlight that the use of these new oxy-fuels in diesel engines can lead to an effective reduction in terms of greenhouse gases emissions throughout the entire life cycle. View Full-Text

Keywords: biodiesel; glycerin; additive; Life Cycle Assessment biodiesel; glycerin; additive; Life Cycle Assessment

Autor: Francesco Asdrubali 1,* , Franco Cotana 1, Federico Rossi 1, Andrea Presciutti 1, Antonella Rotili 1 and Claudia Guattari 2



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