can anyone inform me how can i purife the biodiesel from methanol and glycerol by using hexane please ?
Regards
The biodiesel is the methyl (or ethyl or propyl) ester? If so, try partitioning it between hexane and water. The methanol and glycerol will be in the aqueous layer and the biodiesel should partition into the hexanes.
Dear Jack
Thank you.
How much volume of hexane should it take ? and how can i remove it after that please ?
The volume of hexane required depends on the volume of material. But the esters are quite soluble in hexane. A rotary evaporator removes the hexanes and, with a condenser, it may be reused.
5 ml from ester , what are the exact amounts of hexane should be added ?
Even I used heterogeneous catalyst there is one layer at the end of the reaction , what I should do, please ?
What solvent did you run your reaction in? I thought you just had a mixture of your biodiesel, methanol, and glycerol. Perhaps you should tell us more so we can better help.
Methanol and castor oil using basic heterogeneous catalyst
If the catalyst is a solid, remove the solution and extract as above. If the catalyst is suspended in a solution, we need to know what that solution is.
Methanol itself isn't soluble in hexanes, nor is glycerol.
Dear Jack,
The catalyst is solid but I don't have two layers just on layer after the reaction . So, how can i get two layers , please ?
Remove the liquid, add hexane to the liquid, it should form two layers.
Dear Jack,
Many thanks for a nice reply.
Indeed, I used the GC-MS for analysis the FAME , can you inform me how can I get the simple procedure for that because a lot of people used the different method and i can't found the good one and simple one using GC-MS, please?
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