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2006-10-26 News Release
Biodiesel is environmentally friendly, but perishable Baynox plus stabilizes biodiesel made from soya and vegetable oils with polyunsaturated fatty acid methyl esters can now be stabilized sufficiently.
Increasing the shelf life of environmentally friendly fuel. Just as vegetable
oils quickly perish and go rancid in contact with air, there is also a
risk that biodiesel will be oxidized by the air too. This involves free
fatty acids forming in the biodiesel that have a corrosive effect on the
engine. At the same time, polymers may form into “gums” and
leave deposits and residues in the engine. As the use of biodiesel becomes
more widespread, storage and transportation times – from the production
date to refueling at the pump – are getting longer and longer. There
is an increasing risk that the biodiesel will become rancid before use.
It is thus essential to stabilize biodiesel using antioxidants. LANXESS
was therefore quick to develop a suitable biodiesel stabilizer, Baynox*,
to keep biodiesel “fresh” for longer. It has an excellent
effect in biodiesel produced from rapeseed oil, waste cooking oils, animal
fat or palm oil.
To stabilize biodiesel made from vegetable oils and containing a large
quantity of polyunsaturated fatty acid methyl esters such as soy oil,
sunflower seed oil and even Jatropha nut oil, LANXESS searched for antioxidants
that would offer reliable protection, as biodiesel obtained from soy oil
is more cost-effective but more perishable than the rapeseed oil variety.
The result of this research is the new biodiesel stabilizer Baynox* plus The Europe-wide standard for biodiesel, EN 14 214, requires the stability
of biodiesel to be measured by the Rancimat test at a temperature of 110
°C. The minimum permissible value is six hours. However, the plant’s
natural antioxidant, Vitamin E, is often not sufficiently present in biodiesel
to ensure compliance with this standard. A synthetic stabilizer therefore
needs to be added to increase shelf life. For a non-distilled, commercially
available rapeseed biodiesel, it is generally sufficient to add 200 –
400 ppm of Baynox LANXESS has been supporting the biodiesel industry since its inception. Says Dr. Axel Ingendoh, biodiesel expert in the Basic Chemicals business unit: “Our research activities not only include examining the stability of customer samples and providing recommendations for appropriate, economic dosing, but also meeting continuously increasing market demands by systematically developing and enhancing our range of products. The latest example of this is the development of Baynox plus.” The production of Baynox and Baynox plus is certified in accordance with
ISO 9001 and has been awarded “no harm” status by the German
mineral oil industry. This shows that the biodiesel stabilizer from LANXESS
can be used to enhance the shelf life of pure biodiesel and in biodiesel
that is added (B5) to mineral diesel. An application has already been
made for a “no harm” certificate for Baynox plus. “Our
products are of a consistently high quality, do not contain sulfur or
nitrogen, and combust without leaving residues in the engine,” stresses
Ingendoh.
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