When it comes to BIO fuels – Diesel fuels containing bio components – the top three bio-components are RME, SME and PME biodiesels. PME stands for palm oil methyl ester, which is palm oil biodiesel; SME is soybean oil derived Methyl Ester; and RME is rapeseed methyl ester. Palm, soy and rapeseed oils have been the predominant sources for biodiesel.. Bio diesel is noc toxic, renewable and biodegradable, and its use does not contribute to overall CO2 emissions.
Production of this oil is increasing in tropical countries such as Malaysia and Thailand. Palm oil is generally oil that is considered to be a good choice in terms of its low cost and its high productivity. The oil takes its name from the Palm tree it is harvested from and the 16 carbon chains of saturated fatty acid palmitic acid that are found in it. Another constituent of palm oil is monounsaturated oleic acid; in addition, palm kernel oil usually contains lauric acid. PME differs from other types of biodiesel by being more saturated, which means it has fewer double carbon bonds in the molecules. Bio fuels tend to harden at lower temperatures, which can make them more difficult to use in chilly weather.
This is proving to a popular source for biodiesel in Europe, as it is the most economical local crop to produce biodiesel. The cold flow properties of RME are better than of SME and PME and is therefore best suited for cold operation.
Soy is grown worldwide and is a plentiful source for biodiesel, as millions of tonnes of it are produced each year.
The future for biodiesels seems to be bright as the world turns away from fossil fuel sources and tries to find alternatives that are less toxic to the environment, are renewable, and that do not contribute to the problem of global warming by an overall increase in greenhouse gases.
However latest developments are moving away from plant based biofuel production as they are competing with our food supply. New biofuel processes are being developed to produce similar products from waste streams.
UCOME, Used Cooking Oil Methyl Ester, TME, Tallow Methyl Ester, LME, Lard Methyl Ester and FOME, Fish Oil Methyl ester are examples of similar biofuels which do not compete with our food supply.
Coryton develops and produces different test fuels containing all available biofuels on the market for test purposes. Biofuels with different cold flow properties, containing various contaminants or at different oxidation levels are regularly required in the automotive test industry.