Hi, about to commence on biodiesel production on my newly constructed appleseed. I have about 50 gallons of wvo, and I've tested for water using the "weigh-heat-weigh" method as described on B100's website. Using a 5000g scale with a 1g resolution, I wieghed out:
Pan = 518g
Pan + oil = 2001g
wieght of oil = 1483g
Heated oil to 250 C and kept it there till it stopped bubbling.
Pan + oil = 1999g
Water boiled off= 2.0g
Percent water = 2.0g/1483g = 1.35%
PPM water = 1350ppm
Does my math look good and do I have wvo with a low enough water content to react without producing too much soap? I performed the hot pan test on another sample of the same oil that I had not boiled the water off and got many bubbles still. Wondering how I should interpret the hot pan test. Thanks!
This might be helpful:
Remove the water from the feedstock or remove the soap from the finished product, your choice.