Refined oil or crudes oil as a raw material of biodiesel

by Bouhmida khaled
(Morocco)

Dear Sirs

I have a question concerning raw material:

I would like to use a vegetable oil ( sunflower oil,rapeseed oil or soya bean oil).

We use a crude oil or refined oil and what the difference between them?,

I am waiting for your reply as soon as possible.

Very best regards

Bouhmida khaled

Consulting Engineer

E-mail : khaled183@hotmail.com