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Wednesday, February 6, 2008

Cocobiodiesel (CME): Perfect Diesel


I have read an article by R. S. Diaz, Jr. and F.C. Galindo of Asian Institute of Petroleum Studies, Inc. (AIPSI) that states that cocobiodiesel (CME) is considered as a perfect diesel.
According to them, in petroleum language, “the ideal diesel fuel is 100 % normal paraffin (n-paraffin) which is fully saturated hydrocarbon which means it is 100% oxidation stable.” This stability means “it is resistant to oxidation, not prone to bacterial growth, corrosion, rust formation, polymerization, and gumming even without any anti-oxidant additive.” Ideal Diesel, which is 100%, saturated “is easy to burn, has high cetane number, and produces low Nox emission. Commercial diesel fuel contains mixture of components with lower oxidation characteristics and unsaturated hydrocarbon which makes the fuel “a bit more difficult to burn and is prone to oxidation, bacterial growth, corrosion, polymerization, clogging, etc. which result in deterioration of fuel quality.” It must be additized to address these problems.

Cocobiodiesel “is 91% saturated carbon consisting of more than 60% medium carbon chain making it a lot easier to burn.” It is 91% n-paraffin (only 9% short of the ideal diesel condition) and its carbon chain contains an oxygen molecule provided by nature to ensure a more efficient combustion.

They compare cocobiodiesel with commercial diesel and other biodiesel. The comparative content of saturated and unsaturated carbon chain in their natural state. The level of saturated hydrocarbon (unadditized) will determine the comparative oxidation stability of the fuels.

Saturated Hydrocarbon

Unsaturated Hydrocarbon

Ideal Diesel (n-paraffin)


0 %

Coco biodiesel


7 %

Palm Biodiesel


51 %

Unadditized Comm’l Diesel

approx 40%

60 %

Jatropha Biodiesel


78 %

Soy Biodiesel


84 %

Rapeseed Biodiesel


94 %

Least Ideal Diesel


100 %

The article is very informative regarding cocobiodiesel. You have to read it to better understand cocobiodiesel. I failed to save its exact url but the title of the article is “CME – The Perfect Diesel. Kudos to the authors, R. S. Diaz, Jr. and F.C. Galindo, for their very informative article. Goodluck to your “ester engineering”!

Another article by R.S. Diaz Jr. that explains the technical aspect of cocobiodiesel is entitiled COCONUT FOR CLEAN AIR. Unfortunately I don’t have the exact url.
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