Biodiesel manufacturing process:
Biodiesel manufacturing involves esterification of fatty acids and transesterification of triglycerides using various starting materials such as vegetable oils, waste cooking oils, animal fats etc. Trans-esterification is carried out in presence of methanol and catalysts; which yields raw biodiesel (methyl ester) and glycerin as principal products along with the soap, catalyst and methanol. This step is followed by bulk separation of the two distinct phases - Biodiesel (methyl ester) and Glycerin. The separated biodiesel (methyl ester) phase is then passed through specialized ion exchange resin column/s to remove impurities like glycerin, soaps and traces of catalyst, along with ionic salts to produce pure Biodiesel.
Highlights of Tulsion
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