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Hi Keith and all,
I made a 200 gallon batch of biodiesel last Friday.
I used 200 gallons of wvo, 40 gallons of methanol, and 16.5 lbs of 90.5%
anhydrous KOH from a titration of 4.5 g/L. After draining off the glycerine I
took a 400 ml sample and performed a shake test.I got an emulsion. I added a
couple of grains of calcium chloride and a thimble of vinegar and got perfect
separation in about 10 minutes.
As you know, I have addressed the question of soft
water in the wash and while the addition of calcium chloride and vinegar have
yet to produce a poor result, I am troubled by this initial emulsion formation
using plain water.
Today I took 1 litre od the biodiesel and
reprocessed it. I used 200 ml of methanol and 5.4 grams of 90.5% KOH, preheated
the oil to 120 F and blended for 20 minutes. After 1 hour there was no
detectable settling of anything. The biodiesel remains in one phase that is
slightly darker than the original biodiesel and somewhat cloudy.
Does anyone think that I have a concern here or am
I just being paranoid?
Thanks for any comments,
Bill Clark
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