I think as long as our methods give us high quality biodiesel then within reason our slightly different ways of processing arn't too significant.
Just for the record here is a brief description of my method;
Oil is settled for at least 4 weeks but not dried (water @ 850ppm level)
Glycerol pre-treated in a separate tank powered by an M67 (military immersion) so nearly free heat. Water after this process @ 350ppm
Transferred to a conical feed tank that feeds the processor, settled for another 3 weeks.
!st reaction uses 12.5% methanol and is done at ambient temp in Summer reaching @ 30degs. I use a mixture of K and Na and ASM in warmer weather which produces far less water in the methoxide.
Left overnight so most of the glycerol can be removed.
Dropout with a 10/90 test after S1 is between 0.3 and 1.0 mls
S2 uses 15% methanol and a process temp of 40degs for 1 hour.
5 litres of water added after 1 hour and mixed for 10 mins, then bubbled overnight, settled at least a few hours.
Transferred to wash tank, washed @ 5 times at 30 degs with 8 litres of water per wash. Left overnight.
Dried with an IMB Turbo dryer (dries the incoming air with silica gel) Water content<300ppm after just 1 hour drying at 60 degs. (I have left the dryer on as an expt once for 13 hours and got a result of 50ppm water ) it is hard to get bio down to this level and totally inefficient but it was just to see.
When the bio cools then centrifuge and filter.