Enzymatic butanolysis of coconut oil. Biorefinery approach
| Autor: | José Aracil, Abderrahim Bouaid, Hassan Acherki, Mercedes Martínez, Alicia García |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Biodiesel
food.ingredient 020209 energy General Chemical Engineering Butanol Organic Chemistry Coconut oil Energy Engineering and Power Technology Fraction (chemistry) EN 14214 02 engineering and technology Transesterification 010501 environmental sciences Biorefinery Pulp and paper industry 01 natural sciences chemistry.chemical_compound Fuel Technology food chemistry 0202 electrical engineering electronic engineering information engineering Organic chemistry Response surface methodology 0105 earth and related environmental sciences |
| Zdroj: | Fuel. 209:141-149 |
| ISSN: | 0016-2361 |
| Popis: | The biorefinery approach, consisting in the transesterification of a low cost and sustainable coconut oil, using enzymatic catalysis with butanol as alcohol to realize a completely green bio-process. The proposed biorefinery approach uses an integrated process for the production of two fractions, the first one LMWBE (low molecular weight) caprylate, caprate, laurate and myristate butyl esters which can be used as high values chemicals (due to their numerous applications in cosmetic, pharmaceutical, and food industries), the second remaining fraction HMWBE (high molecular weight) palmitate, stearate and oleate butyl esters could be used as a promising substitute for conventional fuels, since it matches the European Biodiesel Standard EN 14214. The influence of variables such as temperature, catalyst concentration and alcohol/oil molar ratio on the production of both fractions has been studied and optimized by means of factorial design and response surface methodology (RSM). The obtained models are useful to determine the optimum operating conditions for an up-scaled industrial process, using a minimum number of experiments, with the consequent benefits from an economical point of view. However from a technical point of view, the highest possible yield for the more valuable LMWBE fraction should be targeted, consequently a catalyst concentration of 5.8% an alcohol/oil molar ratio of 6.2:1 and an operation temperature of 65 °C should be chosen. According to these conditions, conversion rates of 74% and 24% for LMWBE and HMWBE, respectively, could be obtained. The preparation of the products is a green engineering process, clean, solvent-free, with a very selective catalyst that minimizes water and energy consumption and the downstream processing of the integrated process. |
| Databáze: | OpenAIRE |
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