how do you extract glycerin from cooking oil?

Answer 1

And just what pray-tell are you wanting to do with the glycerine there Phil? There are lots of possibilities... even alcohol manufacturing!

Anyway, it's an oleochemical process and you've got your choice of it either being a hydrolysis or alcoholysis process. It just depends on what you want to use the glycerin for later.
Hydrolysis (water-reaction) will produce fatty acids and glycerol.
Alcoholysis (alcohol reaction) will produce fatty acid esters and glycerol.

Answer 2

Some cooking oil don't have glycerine in it. But for those that do you can use the method used at Yale University. See: http://www.yale.edu/opa/newsr/06-05-23-01.all.html

The guy from MIT is full of it. You are doing it for biofuel reasons and need to get rid of it, not use it.

If you wanted glycerine you could buy it at most drug stores. Don't need to extract it.

Yale rocks! MIT sucks pyrex funnels.

Answer 3

Both are good for you, each fruit/vegetable has different vitamins. Therefore as more variety, as better. Vegetables have generally less sugar than fruits.

Answer 4

I am a Chemistry major from MIT. I could tell you, but I would be afraid that you might be trying to make nitroglycerin or some other explosive, and then get on board a plane and blow yourself up, so that you could get at those 72 virgins or whatever. Sorry, I couldn't be responsible for that.

Answer 5

cooking oils, like coconut oil are glycerides of higher fatty acids. When these compounds are hydrolysed with sodium hydroxide, the products are sodium salt of the fatty acids and glycerol. The sodium salt of fatty acid is the soap.