Kavitha, At the risk of sounding rude, at least in some respects it is your professor who is in greater need of help than you relative to accurate understanding of biodiesel.
Biodiesel is not a fatty acid. It is an alkyl ester - an oxygenated fuel of considerably different combustion and physical properties than a fatty acid. And while bio-diesel (alkyl esters) is comprised of longer chains than D-1 and D-2, it is the very fact that they are oxygenated that gives biodiesel many of its cleaner burning properties. Most of the other beneficial emissions properties are derived from the fact that it is not fossil fuel derived and therefore the only PAHs in the emissions are from crankcase oil blow by, not the fuel itself. There is a universe of difference between bio-diesel and petro-diesel emissions. Unfortunately, his disbelief in relation to emissions reductions is not in line with over a decade of emissions tests (EU and US) and the more recent tier Health Effects Studies conducted on soybean methyl esters. I would hazard to both guess and wager that his "disbelief" is somehow centrally connected to India's present policies outlawing diesel transportation due to the heavy concentration of emissions in urban areas. Sadly, India is taking a path of demonizing diesels rather than implementing the use of an enormously clean fuel such as biodiesel, which would give both instant relief from the vast majority of emissions (erego immediate improvements in urban health) and also permit the progressive elimination of the point sources of the heaviest emissions, such as 2 stroke diesel engines which scavenge oil vapors and release the combusted by products as PAH rich emissions. Hopefully his disbelief is short lived and it doesn't prove to be detrimental to your work or your review, as this is one technology and fuel source that could enormously benefit India's population centers, not to mention the entire country. Todd Swearingen ----- Original Message ----- From: kavitha palaniappan <[EMAIL PROTECTED]> To: <biofuels-biz@yahoogroups.com> Sent: Friday, August 30, 2002 9:37 AM Subject: [biofuels-biz] Help! > > I am a post-graduate science student in India. I am very much interested in the production of biodiesel. After going through the various websites, I decided to take up the production process as my project work. However, my professor says that the biodiesel produced from waste oil is only a fatty acid and not a diesel. Moreover, this biodiesel has a longer hydrocarbon chain (than normal diesel) and hence would cause more pollution. He is not ready to accept the emission reduction facts as given in the websites. > > Please help me! > > Kavitha. > > > > > > --------------------------------- > Do You Yahoo!? > Yahoo! Finance - Get real-time stock quotes > > [Non-text portions of this message have been removed] > > > > ------------------------ Yahoo! Groups Sponsor ---------------------~--> > 4 DVDs Free +s&p Join Now > http://us.click.yahoo.com/pt6YBB/NXiEAA/MVfIAA/9bTolB/TM > --------------------------------------------------------------- ------~-> > > Biofuels at Journey to Forever > http://journeytoforever.org/biofuel.html > Biofuel at WebConX > http://www.webconx.dns2go.com/2000/biofuel/biofuel.htm > List messages are archived at the Info-Archive at NNYTech: > http://archive.nnytech.net/ > To unsubscribe from this group, send an email to: > [EMAIL PROTECTED] > > > > Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/ > > > ------------------------ Yahoo! Groups Sponsor ---------------------~--> 4 DVDs Free +s&p Join Now http://us.click.yahoo.com/pt6YBB/NXiEAA/MVfIAA/9bTolB/TM ---------------------------------------------------------------------~-> Biofuels at Journey to Forever http://journeytoforever.org/biofuel.html Biofuel at WebConX http://www.webconx.dns2go.com/2000/biofuel/biofuel.htm List messages are archived at the Info-Archive at NNYTech: http://archive.nnytech.net/ To unsubscribe from this group, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
