TY - JOUR 
A1 - Sánchez Segado, Sergio
AU - Salar García, María José
AU - Ortiz Martínez, Víctor Manuel
AU - Pérez de los Ríos, Antonia
AU - Hernández Fernández, Francisco José
AU - Lozano Blanco, Luis Javier
T1 - Evaluation of Ionic Liquids as In Situ Extraction Agents during the Alcoholic Fermentation of Carob Pod Extracts
Y1 - 2019
SN - 2311-5637
UR - http://hdl.handle.net/10317/9311
AB - Anhydrous ethanol is a promising alternative to gasoline in fuel engines. However, since ethanol forms an azeotrope with water, high-energy-consumption separation techniques such as azeotropic distillation, extractive distillation, and molecular sieves are needed to produce anhydrous ethanol. This work discusses the potential development of an integrated process for bioethanol production using ionic liquids and Ceratonia siliqua as a carbohydrate source for further fermentation of the aqueous extracts. A four-stage counter-current system was designed to improve the sugar extraction yield to values close to 99%. The alcoholic fermentation of the extracts showed ethanol concentrations of 95 g/L using the microorganism Saccharomyces cerevisae. The production of anhydrous ethanol through extractive distillation with ethylene glycol was simulated using CHEMCAD software, with an energy consumption of 13.23 MJ/Kg of anhydrous ethanol. Finally, several ionic liquids were analyzed and are proposed as potential solvents for the recovery of bioethanol for the design of an integrated extraction-fermentation-separation process, according to their ability to extract ethanol from aqueous solutions and their biocompatibility with the microorganism used in this study.
KW - Tecnología de los Alimentos
KW - Carob pod
KW - Bioethanol
KW - Extractive distillation
KW - Ionic liquids
KW - Biocompatibility
KW - Liquid–liquid extraction
KW - 3309 Tecnología de Los Alimentos
KW - 2414 Microbiología
LA - eng
PB - MDPI
ER -