yvonne shelley a écrit :
In fact, studies have shown that the production and use of biodiesel
compared to petroleum diesel resulted in a 78.5% reduction in carbon
dioxide emissions. Think of what a difference that could make. Also the
sulfur oxides emissions is 8% lower in biodiesel compared to the sulfur
oxides in emissions from regular petro-diesel.

I am afraid that it must rather be the other way round, 78% for sulphur
oxydes and 8% for CO2, for the carbon contents of any oil is roughly the
same, whereas the sulphur contents varies greatly according to the
source. Thus as far as greenhouse effect, the difference is not that
much but for sure it is a real improvement as far as acid rains and
respiratory tract health.

Jean-Marc