Hi J.D. Lively, civil and more! I'd love to see or hear of any specific studies you've come across. Searching the internet yields mostly articles about how, though clean-diesel has washed away some of the dirty-diesel blues, diesel is still dirtier than gasoline. I'm not stopping there though. Most of the works cite research done by Prof. Jacobson from Stanford. (Sounds like it could be a case of having one researcher's findings spread like a rumor, giving something a bad name... like David Pimentel and ethanol production efficiency.)
- Dave --- In biofuel@yahoogroups.com, [EMAIL PROTECTED] wrote: > > Hello, > > > > Excuse my ignorance, but I've heard something recently that I need > > clarification on... > > > > Biodiesel is cleaner than diesel, but is it cleaner than reformulated > > gasoline? (CO, NOx, PM, and HC) I'm talking tailpipe emissions only, > > cause full life-cycle emissions obviously shows biofuel to be cleaner. > > The increased fuel efficiency of diesel engines surely will throw this > > thing wide open to debate, so a grams per mile basis seems appropriate. > > > > There was a thread going on this earlier this month that seemed > > unresolved. To respond to part of that thread, I've also heard of > > people running E85 in their new Prius Hybrids (without conversion, > > they must have a high compression, maybe 13:1). Anyone have more > > information on this? > > > > Dave Shaw > > > > Dave, I think it has been conclusively proven that in a one to one > comparison, even #2 diesel is cleaner than gasoline with respect to CO, > and hydrocarbon emissions. Biodiesel removes 100% of diesels sulfur and > a great deal of its soot, reducing black smoke and particulate > emissions. The reformulated gas is probably cleaner in terms of NOx, > almost certainly, but I'm sure you're aware of the debate on whether or > not NOx is really that harmful. Of course it does cause smog in > combination with sunlight, and high VOCs, but many people feel > controlling VOCs is the better way to decrease smog and improve air > quality. Some studies eevn suggest that smog will increase when NOx > decreases unless there is a corresponding drop in VOCs. I really don't > have the answers, but I still think the diesel will come out cleaner on > most important measures especially with biodiesel or ULSD (like they > have in Europe). On the particulate issue, that may be a problem, but > some say that even gas engines release particulate matter, just a > smaller finer particle. Others say that diesels are too dirty just > because of the particulate emissions issue, that they can cause illness. > It hasn't been proven to my satisfaction, but to others, it most > certainly has. Hope it is a lively yet civil debate, > J.D. > > > > > > > > > > Biofuel at Journey to Forever: > > http://journeytoforever.org/biofuel.html > > > > Biofuels list archives: > > http://infoarchive.net/sgroup/biofuel/ > > > > Please do NOT send Unsubscribe messages to the list address. > > To unsubscribe, send an email to: > > [EMAIL PROTECTED] > > Yahoo! Groups Links > > > > > > > > > > > > ------------------------ Yahoo! Groups Sponsor --------------------~--> Make a clean sweep of pop-up ads. Yahoo! Companion Toolbar. Now with Pop-Up Blocker. Get it for free! http://us.click.yahoo.com/L5YrjA/eSIIAA/yQLSAA/FGYolB/TM --------------------------------------------------------------------~-> Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Biofuels list archives: http://infoarchive.net/sgroup/biofuel/ Please do NOT send Unsubscribe messages to the list address. To unsubscribe, send an email to: [EMAIL PROTECTED] Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/biofuel/ <*> 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/
