Techno-economic evaluation of strategies based on two steps organosolv pretreatment and enzymatic hydrolysis of sugarcane bagasse for ethanol production
作者： Leyanis Mesa , Nancy López , Cristóbal Cara , Eulogio Castro , Erenio González
DOI: 10.1016/J.RENENE.2015.07.105
关键词:
摘要: Abstract Several strategies based on a two steps organosolv pretreatment followed by enzymatic hydrolysis of sugarcane bagasse (SCB) were evaluated with the objective selecting operational conditions suitable to promote an efficient and low cost production ethanol. Initially, influence six variables used for was studied. The included time first step, use 45% ethanol as pulping solution, solid-to-liquid ratio solution during second pretreatment, concentration NaOH in step. Further assays carried out additional reduction costs process improve results cellulose conversion glucose. Eliminating milling step pretreated SCB, using commercial tensoactive (composed esters several surfactants), recycling 50% slurry obtained reaction medium proved be feasible hydrolysis. Fermentation glucose produced under selected Saccharomyces cerevisiae occurred 81% efficiency 102.88 $/hL
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