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I make biodiesel using ethanol. There is no problem after heating and washing, but after drying, gelation occurs. Why? | ||
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member |
You've got soap. Meaning water in your reaction. | |||
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member |
How much water does your ethanol have in it? | |||
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Member |
water: ≤ 0.1 % | |||
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I thought about sources of water in the starting materials. I heated 157.3 grams of technical grade sodium hydroxide hot, to maybe 200 degrees centigrade under 100 millimeters atmospheric pressure in a vacuum still. I obtained a 3.9 gram loss of mass from the sodium hydroxide. So the sodium hydroxide that I used was at least 2.479% water. That's another source of water in the reaction. Your oil may have been wet. When I made biodiesel using new corn oil + potassium hydroxide + 99.5% ethanol + heat + mixing , I got a regular reaction with glycerine drop out as usual. It seems to me the only possible cause of your gelling is water in one of the starting materials. | |||
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Member |
Where do I find the "like" button? | |||
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Member |
Hi Paulus,
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Member |
Thank you, Tilly, and a beautiful "like" button it is. | |||
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