Let it settle for a while - I've had this happen and you can usually
pump off most of either the BD or the soap layer. Then I usually bubble
wash the soap out. The smell is probably methanol - though I've never
had my BD smell particularly bad. What kind of oil did you start with?
What's the ph of the final batch?
Anyone else want to chime in?
Todd Hershberger wrote:
I processed about 60 liters after some successful test batches. I was
disappointed to discover a thick middle layer of emulsion when I did
the violent shake test.
Should I gently stir wash the fuel? Reprocess it using 10% methanol w/
3.5 grams of lye? or as virgin oil?
I know my process needs improvement. This was my first large batch
over 1 liter.
My other question is. When I pumped the biodiesel from the reactor to
the wash tank, there was a noxious smell from the fuel coming out of
the the 55 gallon drum. It was kind of choking and eye imitating. I
didn't breathe much of it. The fuel was still warm coming out after
24 hours of settling.
Is that just smell of unwashed biodiesel with contaminants?
Thanks,
Todd
Todd G. Hershberger, CTS
ITSMedia - Goshen College
574.674.2149 - Pager
574.535.7735 - Work
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