Re: Reduced oil temperature in reactor ?
Initially I put 13 grams calcium oxide + 11 grams 85% potassium hydroxide and 330 milliliters technical grade methanol into a 500 milliliter flask fitted for magnetic stirring. I made more methoxide solution than I would need. I stirred a bit from time to time to try to dissolve all the potassium hydroxide. Previously I tested new Mazola (name brand) corn oil for free fatty acids, I got 0.6 grams sodium hydroxide per litre to neutralize them. So I used magnesol XL to treat 700 milliliters of new corn oil thinking that might remove the free fatty acids (a small quantity). Eighteen hours (about) after I mixed the methoxide solution, I decanted off 100 milliliters of the upper clear liquid leaving the white solid in the mixing flask. I avoided putting the white solids into the vegetable oil. Mixing the 100 ml methoxide and 380 ml corn oil was done at room temperature of 22 degrees centigrade in a 1 litre glass storge bottle with a teflon cap. I shook it a few seconds , it separated that time. About one minute later I shook it a few seconds again, there was a noticeable color change and it did not separate quickly. Within about 15 minutes at room temperature a brownish glycerine layer was forming. The larger upper layer was transluscent. About 8 hours later I removed the glycerine layer in a separatory funnel ,then I washed (extracted) 5 times with distilled water. I got about 360 milliliters of wet biodiesel , added 40 grams anhydrous sodium sulfate (a drying agent). At 5PM the next day decanted off somewhat dried transluscent biodiesel. Added 25 grams magnesium silicate to remove more polar chemicals from the biodiesel with 60 degree centigrade heat on a hot plate with stirring. The biodiesel became transparent. Did a 10/90 Warnquest miscibility test there was no fall out. did a soap test but there seems to have been no soap in it at all, the biodiesel did not turn the bromophenol blue indicator blue for the test.
Initially I put 13 grams calcium oxide + 11 grams 85% potassium hydroxide and 330 milliliters technical grade methanol into a 500 milliliter flask fitted for magnetic stirring. I made more methoxide solution than I would need. I stirred a bit from time to time to try to dissolve all the potassium hydroxide. Previously I tested new Mazola (name brand) corn oil for free fatty acids, I got 0.6 grams sodium hydroxide per litre to neutralize them. So I used magnesol XL to treat 700 milliliters of new corn oil thinking that might remove the free fatty acids (a small quantity). Eighteen hours (about) after I mixed the methoxide solution, I decanted off 100 milliliters of the upper clear liquid leaving the white solid in the mixing flask. I avoided putting the white solids into the vegetable oil. Mixing the 100 ml methoxide and 380 ml corn oil was done at room temperature of 22 degrees centigrade in a 1 litre glass storge bottle with a teflon cap. I shook it a few seconds , it separated that time. About one minute later I shook it a few seconds again, there was a noticeable color change and it did not separate quickly. Within about 15 minutes at room temperature a brownish glycerine layer was forming. The larger upper layer was transluscent. About 8 hours later I removed the glycerine layer in a separatory funnel ,then I washed (extracted) 5 times with distilled water. I got about 360 milliliters of wet biodiesel , added 40 grams anhydrous sodium sulfate (a drying agent). At 5PM the next day decanted off somewhat dried transluscent biodiesel. Added 25 grams magnesium silicate to remove more polar chemicals from the biodiesel with 60 degree centigrade heat on a hot plate with stirring. The biodiesel became transparent. Did a 10/90 Warnquest miscibility test there was no fall out. did a soap test but there seems to have been no soap in it at all, the biodiesel did not turn the bromophenol blue indicator blue for the test.
Comment