Harmonisation of Biodiesel Composition via Competitive Interesterification – Transesterification
Chemical Engineering Transactions 2020
Valdis Kampars, Rūta Kampare, Elīna Sīle, Modris Roze

A pure interesterification reaction of triglyceride with methyl acetate in the presence of potassium tert-butoxide homogeneous catalyst produces a reaction mixture containing 72.5 wt.% of fatty acid methyl esters (FAME) and 14 wt.% of triacetin. In order to harmonise the content of the reaction mixture by increasing the fatty acid alkyl esters (FAAE) and decreasing the content of triacetin, in this work a competitive interesterification – transesterification conversion of triglyceride has been made using iso-propanol. Due to the low reactivity of iso-propanol, it is possible to carry out the targeted harmonisation of biofuel composition by increasing the FAAE content up to 81.9 wt.% while retaining a relatively high triacetin content (6-9 wt.%). The lowering of the triacetin content and replacing it with the fatty acid iso-propyl esters provides the opportunity to obtain products that are more similar to conventional biodiesel and improve the cold flow properties of the fuel.


Keywords
biodiesel composition, interesterification,transesterification
DOI
10.3303/CET2080016
Hyperlink
https://www.aidic.it/cet/20/80/016.pdf

Kampars, V., Kampare, R., Sīle, E., Roze, M. Harmonisation of Biodiesel Composition via Competitive Interesterification – Transesterification. Chemical Engineering Transactions, 2020, Vol. 80, pp.91-96. ISSN 2283-9216. Available from: doi:10.3303/CET2080016

Publication language
English (en)
The Scientific Library of the Riga Technical University.
E-mail: uzzinas@rtu.lv; Phone: +371 28399196