</font><font color="blue" class="small">( Here's a link to the study that presents the other side of 'making biodiesel uses more energy than it supplies' controversy.
Click Here. )</font>
What I've been able to glean from about 2 years of study is:
1. Biodiesel from fresh vegetable oil isn't cost effective now because there's only one channel for that oil to be shipped; the food quality channel. This means that all shipping tanks must be certified as clean enough for human consumption. This adds substantially to the cost. A non-food or
fuel use only channel is needed.
2. Methyl alcohol is fine for diesel, but has toxic qualities that must be guarded against. Ethyl alcohol is better, but the federal and many state governments like to tax this potential fuel, and it's harder to use because it's hygroscopic at a much higher level than methyl alcohol.
3. Someone mentioned that used vegetable oil has an animal feed value of more than $1.00. If that is true, then the waste oil disposal companies need to be advised since they are throwing away millions of gallons of used oil yearly. The reality is, most people can get this resource for nothing, only having issues in parts of the country requiring "Rendering licenses", such as California. Despite the license issue, there's a very active homebrew biodiesel group in Northern California. The cost is roughly $1.50 per gallon of diesel made from used oil.
4. Straight vegetable oil can be used as well, but the double fuel system required makes this too much trouble for most folks, it would be easy for this type system to be used in boats and large trucks because the weight increase wouldn't be a handicap with those users.
And finally, this fuel source is in it's infancy, still, and if the cost for petroleum continues to climb, vegetable oil based fuel will become attractive. After all, Rudolf Diesel did not design the diesel to run on petroleum.
NOTE: I'm not mentioning
global warming or
greenhouse gases because there's no genuine science indicating that this should be a concern.