Here is a new process (Mcgyan Process) for making biodiesel that some scientist at a university in Minnesota have come up with. It uses a reactor and thus is a continuous process rather than a batch process.
Here is a link:
http://www.ifound.org/docs/files/BPeteGreual_Sar-Tec_Bio-diesel.pdf
Here is a link:
http://www.ifound.org/docs/files/BPeteGreual_Sar-Tec_Bio-diesel.pdf