Pretratamiento de la poda de olivar para obtención de bioetanol
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2018-02-26
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Jaén: Universidad de Jaén
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[ES] En el presente trabajo se ha realizado un pretratamiento Liquid Hot Water con ácido sulfúrico diluido con el fin de obtener las condiciones de trabajo óptimas para obtener la mayor cantidad azúcares, potencialmente fermentables a bioetanol, a partir de biomasa lignocelulósica.
La materia prima utilizada ha sido poda de olivar y se ha aplicado la técnica de diseño experimental, que permite estudiar diferentes factores de operación de forma simultánea, y la metodología de superficie de respuesta para estudiar las diferentes respuestas analizadas. Los factores estudiados han sido, temperatura de pretratamiento y concentración de ácido, manteniéndose fijo el tiempo de ensayo (20 minutos) y la relación sólido/líquido (15/100 p/v).
En las condiciones ensayadas de pretratamiento, la influencia de la temperatura es mayor que la concentración de ácido. Además, trabajar a bajas temperaturas y con algo de ácido favorece la recuperación de azúcares hemicelulósicos e influye poco en la recuperación de glucosa.
[EN] In the present work a liquid hot water pretreatment with dilute sulfuric acid has been carried out in order to obtain the optimum working conditions to obtain the highest quantity of sugars, potentially fermentable to bioethanol, from lignocellulosic biomass. The raw material used has been olive pruning and the experimental design technique has been applied, allowing the study of different factors of operation simultaneously, and the response surface methodology to study the different responses analyzed. The factors studied were pretreatment temperature and acid concentration, keeping the test time (20 minutes) and the solid / liquid ratio (15/100 w / v) fixed. In the pretreatment tested conditions, the influence of the temperature is greater than the acid concentration. In addition, working at low temperatures and with sorne acid favors the recovery of hemicellulosic sugars and little influence in the recovery of glucose.
[EN] In the present work a liquid hot water pretreatment with dilute sulfuric acid has been carried out in order to obtain the optimum working conditions to obtain the highest quantity of sugars, potentially fermentable to bioethanol, from lignocellulosic biomass. The raw material used has been olive pruning and the experimental design technique has been applied, allowing the study of different factors of operation simultaneously, and the response surface methodology to study the different responses analyzed. The factors studied were pretreatment temperature and acid concentration, keeping the test time (20 minutes) and the solid / liquid ratio (15/100 w / v) fixed. In the pretreatment tested conditions, the influence of the temperature is greater than the acid concentration. In addition, working at low temperatures and with sorne acid favors the recovery of hemicellulosic sugars and little influence in the recovery of glucose.