CELLULOSIC ETHANOL: IMPROVING COST EFFICIENCY BY COUPLING SEMI-CONTINUOUS FERMENTATION AND SIMULTANEOUS SACCHARIFICATION STRATEGIES: Improving cost efficiency by coupling semi-continuous fermentation and simultaneous saccharification strategies

Patricia Portero Barahona, Bernardo Bastidas Mayorga, Jesús Martín-Gil, Pablo Martín-Ramos, Enrique Javier Carvajal Barriga

Producción científica: Contribución a una revistaArtículorevisión exhaustiva

21 Citas (Scopus)

Resumen

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 (130–170C) and times (10–30 min). The pretreatment with NaOH at 160C 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.

Idioma originalInglés
Número de artículo1459
Páginas (desde-hasta)1-13
Número de páginas13
PublicaciónProcesses
Volumen8
N.º11
DOI
EstadoPublicada - 15 nov. 2020

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