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versión On-line ISSN 0718-0764
CARDENO, Fernando; GALLEGO, Luis J y RIOS, Luis A. Refining of Glycerin Phase from Palm Oil Biodiesel using Mineral Acids . Inf. tecnol. [online]. 2011, vol.22, n.6, pp.15-24. ISSN 0718-0764. http://dx.doi.org/10.4067/S0718-07642011000600003.
A method is proposed for the purification of glycerin from palm oil biodiesel production to achieve the required standards, for use in applications non-requiring USP grade (United States Pharmacopoeia), particularly those defined by Colombian standards. A factorial design 2 3 was used with the three variables: type of acid (phosphoric or sulfuric acid), quantity of methanol and pH. It was found that the treatment with sulfuric acid, 50% methanol and pH of 6 gave the best results, and requires an activated carbon bleaching to meet the required color. Refined and bleached glycerin obtained meets the requirements of glycerin type 2 grades 1 and 2 according to the Colombian standard NTC1274.
Palabras clave : biodiesel; glycerin; palm oil; mineral acids; Colombian standard.