Biodiesel Production by Enzymatic Catalysis Process Using Two Analytical Ways: Gas Chromatography and Total Glycerol Determination

Contreras-Andrade, Ignatius and Parra-Santiago, Jonathan and Sodre, Jose Ricardo and Pathiyamattom, Joseph and Guerrero-Fajardo, Carlos Alberto (2014) Biodiesel Production by Enzymatic Catalysis Process Using Two Analytical Ways: Gas Chromatography and Total Glycerol Determination. Journal of Chemistry and Chemical Engineering, 8. pp. 717-726.

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Abstract

Currently, biodiesel is presented as one of the best alternatives for gradually replacing the use of fossil fuels, but it has some factors that make it economically impractical if it does not have a government support. For this reason, research efforts focused on this area have been responsible for optimizing the process of biodiesel production by different catalytic routes to achieve greater
efficiency at a lower cost. In this case, the biggest problem has been the high cost generated by an investigation, which in many occasions is the main factor to decide if an investigation could be carried out. Trying to reduce these costs, in the current study, we are using a technique of glycerol quantification by volumetric methods and comparing obtained results with the chromatographic
method, which is conventionally used and comparatively much more expensive. Biodiesel employee was obtained by an enzymatic catalysis process varying one of three process variables :oil: alcohol molar ratio, temperature and proportion of catalyst. The numerical differences obtained between the two quantification methods generated relative errors lower than 10%, resulting in some occasions
lower than 1%. By gas chromatography analysis the best yield was obtained at the same conditions of the volumetric method, a temperature of 45 oC, an oil:alcohol ratio 1:4 and 8 wt.% of catalyst, but a yield of 95.5% and 97.1%, respectively. Due to the high precision of gas chromatography, this method is used to carry out a surface response analysis obtaining as ideal operating conditions
a temperature of 43.5 °C, 8.9 wt.%. of catalyst and an oil:alcohol ratio 1:4.

Item Type: Article
Uncontrolled Keywords: Biodiesel production, glycerol determination, gas chromatography, enzymatic catalysis.
Subjects: H800 Chemical, Process and Energy Engineering
Divisions: Faculty of Computing, Engineering and the Built Environment
Faculty of Computing, Engineering and the Built Environment > School of Engineering and the Built Environment
Faculty of Computing, Engineering and the Built Environment > School of Engineering and the Built Environment > Advanced Systems Engineering
UoA Collections > UoA15: General Engineering
Depositing User: $ Ian McDonald
Date Deposited: 21 Dec 2016 14:55
Last Modified: 21 Dec 2016 14:56
URI: http://www.open-access.bcu.ac.uk/id/eprint/3738

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