Producción de etanol a partir de harina de yuca utilizando diferentes estrategias en modo continuo
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Date
2012
Journal Title
Journal ISSN
Volume Title
Publisher
Corporación Universitaria Lasallista
Área Metropolitana del Valle de Aburrá
Área Metropolitana del Valle de Aburrá
Abstract
Introduction. Ethanol production from starchy raw materials includes the cooking, liquefaction, saccharification,
fermentation and distillation stages. The technological bases of the process have been studied, but must
be improved by means of the introduction of innovations that allow an energy use reduction and higher volumetric
ethanol productivity. Objective. The project evaluates the ethanol production from the conversion
of yucca flour by means of the independent study in a continuous way of the liquefaction, saccharification and
fermentation processes (LSFC), the serial connection of the three stages and the integration of the saccharification
and fermentation stages in a simultaneous way (SFSC). Materials and methods. The Termamyl 120 L
y glucoamylase AMG 300L enzymes were used in the liquefaction and saccharification processes. The SaccharomycesCerevisiae
yeast was used in the fermentation process. The experimental strategy evaluated the effect
of the dilution rate (D h-1) (0,07, 0,1, 0,15, 0,20, 0,25 and 0,30) on the conversion and the productivity of the
independent processes. With the identification of the D that allowed the integration of the processes, an evaluation
was performed to the coupling of the LSFC process and in the SSFC mode. Results. According to the
D chosen (0,1 h-1) during the execution of the experiment, the values productivity, concentration and ethanol
yield obtained were: fermentation (4,5 g/lh, 5,8 % v/v, 0,4 g/g), LSFC (5 g/lh, 5,4% v/v and 0,46 g/g) and SFSC (4,75
g/lh, 4,7 %v/v and 0,4 g/g), respectively. Conclusions. Developing the LSFC and SFSC strategies was possible at
a D= 0,1 h-1. There were no significant differences in the productivity, concentration and yield in the strategies
serially evaluated. The integration of the processes in a continuous way was technically validated.
Description
Keywords
Corporación Universitaria Lasallista, Área Metropolitana del Valle de Aburrá, Etanol, Etanol - Producción, Yuca (Manihot Esculenta Crantz), Biocombustibles