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      OPTIMIZATION OF THE BASIC ETHANOLYSIS OF RICIN OIL USING THE RESPONSE SURFACE METHODOLOGY Translated title: OPTIMIZACIÓN DE LA ETANÓLISIS BÁSICA DEL ACEITE DE RICINO USANDO LA METODOLOGÍA DE LA SUPERFICIE DE RESPUESTA

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          Abstract

          Biodiesel production from ricin oil has been the focus of several pieces of research in recent years. However, few studies related to the basic ethanolysis of this non-edible vegetable oil have been reported. In this work, the optimum conditions for maximizing the conversion of the basic ethanolysis of ricin oil were determined using the response surface methodology (RSM). Experiments were conducted using a 2k rotable central composite design. The process variables were evaluated at two levels: alcohol/oil molar ratio (3/1- 10/1), catalyst quantity (1%-1.5%), and temperature (20 °C-35 °C). In order to ensure a good adjustment of the design, a quadratic model was implemented for the response variable. The model was able to predict 99.663% of the total variation of the system. The optimum conversion was of 93.64%, obtained with an alcohol/oil molar ratio of 9.86/1, a catalyst concentration of 1.2% with respect to oil weight, and a reaction temperature of 30 °C, for a period of 1 hour.

          Translated abstract

          La producción de biodiesel de aceite de ricino ha sido el objeto de varias investigaciones en años recientes. Sin embargo, se han reportado pocos estudios relacionados con la etanólisis básica de este aceite vegetal no comestible. En este trabajo se determinaron las condiciones óptimas para maximizar la conversión de la etanólisis básica del aceite de ricino utilizando la metodología de la superficie de respuesta. Los experimentos fueron ejecutados usando un diseño 2k central, compuesto y rotable. Las variables del proceso se evaluaron en dos niveles: relación molar alcohol/aceite (3/1-10/1), cantidad de catalizador (1%- 1.5%), y temperatura (20 °C-35 °C). Para asegurar un buen ajuste del diseño se implementó un modelo cuadrático para la variable respuesta. El modelo logró predecir un 99.663% de la variación total del sistema. La conversión óptima fue de 93.64%, obtenida con una relación molar alcohol/aceite de 9.86/1, una concentración de catalizador de 1.2% con respecto a la masa de aceite, y una temperatura de reacción de 30°C, por un período de 1 hora.

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          Technical aspects of biodiesel production by transesterification—a review

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            Variables affecting the yields of fatty esters from transesterified vegetable oils

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              Transesterification of vegetable oils: a review

              The transesterification of vegetable oils with methanol as well as the main uses of the fatty acid methyl esters are reviewed. The general aspects of this process and the applicability of different types of catalysts (acids, alkaline metal hydroxides, alkoxides and carbonates, enzymes and non-ionic bases, such as amines, amidines, guanidines and triamino(imino)phosphoranes) are described. Special attention is given to guanidines, which can be easily heterogenized on organic polymers. However, the anchored catalysts show leaching problems. New strategies to obtain non-leaching guanidine-containing catalysts are proposed. Finally, several applications of fatty acid esters, obtained by transesterification of vegetable oils, are described.
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                Author and article information

                Journal
                dyna
                DYNA
                Dyna rev.fac.nac.minas
                Universidad Nacional de Colombia (Medellín, Antioquia, Colombia )
                0012-7353
                2346-2183
                August 2011
                : 78
                : 168
                : 90-97
                Affiliations
                [03] orgnameUniversidad Nacional de Colombia, Sede Medellín orgdiv1Facultad de Minas vpashova@ 123456yahoo.es
                [02] orgnameUniversidad Nacional de Colombia, Sede Medellín orgdiv1Facultad de Minas pbenjume@ 123456unal.edu.co
                [01] orgnameUniversidad Nacional de Colombia, Sede Medellín orgdiv1Facultad de Minas jimontoy@ 123456gmail.com
                Article
                S0012-73532011000400011 S0012-7353(11)07816811
                113e83d0-dd7a-41e1-bc6c-1ab2680b1a26

                This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

                History
                : 15 January 2011
                : 22 September 2009
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 19, Pages: 8
                Product

                SciELO Colombia

                Self URI: Full text available only in PDF format (EN)
                Categories
                Articles

                ethanolysis,response surface,Ricin oil,superficie de respuesta,etanólisis,Aceite de ricino

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