Open AccessAlternative fuels from vegetable oils: innovative methods and technologies of production and usage
Author(s) -
V.I. Kyrychenko,
V.V. Kyrychenko,
Viktoriia Ribun,
M.B. Skladaniuk
Publication year - 2020
Publication title -
fìzika ì hìmìâ tverdogo tìla
Language(s) - English
Resource type - Journals
eISSN - 2309-8589
pISSN - 1729-4428
DOI - 10.15330/pcss.21.3.552-559
Subject(s) - transesterification , biofuel , biodiesel , diesel fuel , yield (engineering) , chemistry , vegetable oil , organic chemistry , biodiesel production , combustion , pulp and paper industry , waste management , catalysis , materials science , engineering , metallurgy
Traditional methods of biofuel production using vegetable oils and aliphatic alcohols have a number of disadvantages. A new method of transesterification of vegetable oils with alkyl acetates because they act as promoters of diesel fuel combustion. A method of improving both technology of alcoholysis and esterolysis by modifying the temperature range is proposed. Chemical and technological bases of two-stage process of vegetable oil transesterification are developed. In the first stage, the oils are treated with glycerol in order to convert tri-acyl-glyceros of oil into mono-acyl-glycerols. The second stage is alcoholysis of mono-acyl-glycerols with ethanol or esterolysis of mono-acyl-glycerols with ethyl acetate. The temperature range of the transesterification process is improved using heat-transfer solvents. Comparison of material balances of technologies of one- and two-stage ways of ethanolysis and esterolysis showed a significant increase in the selectivity of the process, yield and quality of biofuels. Analysis of the obtained biofuels and mixtures, which contain 20 % of biofuels and 80% of diesel fuel showed the best physical, chemical and operational characteristics. Therefore, the blended fuels are promising area of biofuel technology.