96153 20210902121906.0 doi 10.3390/pr8111459 sideral 120767 ART-2020-120767 eng Portero Barahona, Patricia Cellulosic ethanol: Improving cost efficiency by coupling semi-continuous fermentation and simultaneous saccharification strategies 2020 Access copy available to the general public Unrestricted 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. info:eu-repo/semantics/openAccess by http://creativecommons.org/licenses/by/3.0/es/ 2.847 2020 ENGINEERING, CHEMICAL 74 / 143 = 0.517 2020 Q3 T2 0.413 2020 Bioengineering 2020 Q2 Process Chemistry and Technology 2020 Q2 Chemical Engineering (miscellaneous) 2020 Q2 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Bastidas Mayorga, Bernardo Martín Gil, Jesús (orcid)0000-0003-2713-2786 Martín Ramos, Pablo Universidad de Zaragoza Carvajal Barriga, Enrique J. 5011 500 Universidad de Zaragoza Dpto. CC.Agrar.y Medio Natural Area Ingeniería Agroforestal 8, 11 (2020), 1459 [13 PP.] Processes PROCESSES 2227-9717 448953 http://zaguan.unizar.es/record/96153/files/texto_completo.pdf Versión publicada 497093 http://zaguan.unizar.es/record/96153/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:96153 articulos driver 2021-09-02-10:39:50 ARTICLE