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Cellulosic Ethanol: Improving Cost Efficiency by Coupling Semi-Continuous Fermentation and Simultaneous Saccharification Strategies
| Content Provider | MDPI |
|---|---|
| Author | Jes, ús Martín-Gil Pablo, Martín-Ramos Barahona, Patricia Portero Mayorga, Bernardo Bastidas Barriga, Enrique Javier Carvajal |
| Copyright Year | 2020 |
| Description | A novel approach to improve ethanol production from sugarcane bagasse is proposed. Biomass was pretreated with sodium hydroxide, sulfuric, oxalic, and maleic acids (1% w/v) at different temperatures (130–170 °C) and times (10–30 min). The pretreatment with NaOH at 160 °C for 20 min was found to be the most efficient for further enzymatic saccharification. A semi-continuous fermentation system coupled with a simultaneous saccharification and fermentation strategy was used, attaining fermented liquor every 24 h. The amount of enzymes needed for saccharification was optimized, as well as the production time and ethanol concentration. The process occurred with near to complete depletion of glucose, obtaining ethanol concentrations ranging from 8.36 to 10.79% (v/v). The whole system, at bench scale, showed stability over 30 days, and ease of management and control. This strategy may improve cost efficiency in the production of cellulosic ethanol at industrial scale. |
| Starting Page | 1459 |
| e-ISSN | 22279717 |
| DOI | 10.3390/pr8111459 |
| Journal | Processes |
| Issue Number | 11 |
| Volume Number | 8 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2020-11-15 |
| Access Restriction | Open |
| Subject Keyword | Processes Paper and Wood Bioethanol Enzymes Pretreatment Semi-continuous Culture Sugarcane Bagasse |
| Content Type | Text |
| Resource Type | Article |
