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    Re: Been away - what's changed?

    In the past 5 years there was some discussion of making biodiesel at room temperature, that although slower does go to completion in a simple base method.
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    Re: Reduced oil temperature in reactor ?

    Well Tilly you're right. I reacted 380 milliliters Mazola new corn oil , titration number 0.13 with 100 milliliters methanol with 3.4 grams 85% potassium hydroxide dissolved in it, at a room...
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    Re: Reduced oil temperature in reactor ?

    I asked Dr Mark if his Imisides Method (using cement) passed the 10/90 Warnquest miscibility test. I got no answer, so I tested some cold method biodiesel I made using calcium oxide. I could not...
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    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...
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    Re: Reduced oil temperature in reactor ?

    I treated 700 milliliters of new corn oil with Magnesol XL at about 60 degrees centigrade. Magnesol may remove free fatty acids from new vegetable oil. I dried methanol with calcium oxide with...
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    Re: Reduced oil temperature in reactor ?

    September 23 of last year I used Calcium Oxide to dry methanol, then used that methanol + potassium hydroxide catalyst , and magnesium silicate treated new corn oil to make biodiesel at room...
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    Re: Reduced oil temperature in reactor ?

    Dr. Mark; Have you done a 10/90 test? What were the results?
  8. Re: After 15 years decided to start washing my biodiesel

    I made small quantities of biodiesel, mostly from new vegetable oil in quantities less than 1 litre. I dry washed using magnesium silicate to remove soap after demething by vacuum distillation. ...
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    Re: Incomplete reaction advice

    I would assume you refer to using 20% methanol as a normal amount to get a fairly complete reaction. I did the numbers on a stiochiometric amount of methanol to get 100% reaction in the past, it...
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    Re: Glycerol composition.

    I used calcium oxide and potassium hydroxide in the methanol. I didn't remove the calcium oxide and calcium dihydroxide prior to doing a room temperature transesterification reaction on new corn oil....
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    Re: The Imsides method

    In drying ethanol rather than methanol, a chemistry reference book I have says allow overnight at reflux temperature to absorb all but 0.5% of the water from ethanol. I believe the claim was made...
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    Re: The Imsides method

    I tested glycerol free fatty acid stripping of used vegetable oil. The Used Vegetable Oil titrated at 15 drops that's a titration number of 15/24 milliliters. I treated the U.V.O. with 25% pure...
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    Re: The Imsides method

    I've found something a little odd. I tried Smithy's glycerol stripping using pure pharmacy bought glycerine. I heated the used vegetable oil to 110 degrees centigrade. No water boiled out. I...
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    Re: The Imsides method

    Free fatty acids don't react with caustic immediately like inorganic reactions do. Some soap forms but it takes time for it all to react.
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    Re: The Imsides method

    Smithy I think it's being ignored that glycerol strips used oil of free fatty acids and some water. There is residual catalyst and methanol in the glycerine. I will get some used vegetable oil...
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    Re: The Imsides method

    Something you didn't mention Tilly is pretreating vegetable oil with glycerine is ffa's hydrogen bond with glycerine as part of why they go into the glycerine layer and are to an extent removed. ...
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    Re: The Imsides method

    Calcium oxide adsorbs , reacts with water, removing water from solution to a great extent in alcohol. Making methoxide solution from potassium or sodium hydroxide produces water and methoxide in...
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    Re: The Imsides method

    The organic chemistry class I was in made a methoxide/alcohol type solution in 1985 or so. It involved putting dry/anhydrous alcohol into a flask then adding sodium metal. The metal floated in...
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    Re: The Imsides method

    This method seems to me to have a low temperature advantage. I recognize it probably increases methoxide concentration, but with a disadvantage of calcium soaps (probably) being formed that would...
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    Re: The Imsides method

    Tilly ; Calcium hydride is not the same thing as calcium oxide or calcium hydroxide or calcium dihydroxide. Calcium hydride is one calcium atom bonded to two hydrogen atoms. The formula would be...
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    Re: The Imsides method

    In organic reactions often a general reaction applied to a specific reaction applies to many other similar reactions. Calcium oxide adsorbing water from ethanol probably means it will absorb water...
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    Re: The Imsides method

    A book I have titled "A Text-Book of Practical Organic Chemistry" by Arthur Vogel , 3rd edition , published by Longman (London) in 1970 says on page 166 and 167 that water is removed from 190 proof...
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    Re: The Imsides method

    I did the soap test on this low temperature Imisides method (titrationless) biodiesel making formula. I made maybe 100 milliliters of biodiesel from magnesol treated new corn oil at room temperature...
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    Re: The Imsides method

    Components of cement become an inorganic base upon reacting with water (drying the methoxide/ methanol solution). Calcium oxide reacting with water adds two hydrogen and one oxygen to calcium oxide...
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    Re: The Imsides method

    Maybe there is a misunderstanding of the term "swamping" with base. Sawamping to me means a great excess, like a tidal wave swamping an area of land. So excess cement adsorbing water from the...
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