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Evaluation of Ionic Liquids as In Situ Extraction Agents during the Alcoholic Fermentation of Carob Pod Extracts
| Content Provider | MDPI |
|---|---|
| Author | Mar, ía José Salar-García Víctor Manuel Ortiz-Martínez, Antonia, Pérez De Los Ríos Francisco, José Hernández-Fernández Sanchez-Segado, Sergio Lozano-Blanco, Luis Javier |
| Copyright Year | 2019 |
| Description | 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. |
| Starting Page | 90 |
| e-ISSN | 23115637 |
| DOI | 10.3390/fermentation5040090 |
| Journal | Fermentation |
| Issue Number | 4 |
| Volume Number | 5 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2019-10-18 |
| Access Restriction | Open |
| Subject Keyword | Fermentation Paper and Wood Carob Pod Bioethanol Extractive Distillation Ionic Liquids Biocompatibility Liquid–liquid Extraction |
| Content Type | Text |
| Resource Type | Article |
