160:360–369Ĭannella D, Jorgensen H (2014) Do new cellulolytic enzyme preparations affect the industrial strategies for high solids lignocellulosic ethanol production? Biotechnol. Lu Y, Wang Y, Xu G, Chu J, Zhuang Y, Zhang S (2010) Influence of High Solid Concentration on Enzymatic Hydrolysis and Fermentation of Steam-Exploded Corn Stover Biomass. Mohagheghi A, Tucker M, Grohmann K, Wyman C (1992) High solids simultaneous saccharification and fermentation of pretreated wheat straw to ethanol. Varga E, Klinke HB, Réczey K, Thomsen AB (2004) High Solid Simultaneous Saccharification and Fermentation of Wet Oxidized Corn Stover to Ethanol. Biofuels 6:142Ĭui M, Zhang Y, Huang R, Su R, Qi W, He Z (2014) Enhanced enzymatic hydrolysis of lignocellulose by integrated decrystallization and fed-batch operation. 143:27–40įurlan FF, Tonon Filho R, Pinto FHPB, Costa CBB, Cruz AJG, Giordano RLC, Giordano RC (2013) Bioelectricity versus bioethanol from sugarcane bagasse: is it worth being flexible? Biotechnol. Rosgaard L, Andric P, Dam-Johansen K, Pedersen S, Meyer AS (2007) Effects of substrate loading on enzymatic hydrolysis and viscosity of pretreated barley straw. Rudolf A, Alkasrawi M, Zacchi G, Lidén G (2005) A comparison between batch and fed-batch simultaneous. This value was 52 % higher than obtained in batch operation. The best energy efficiency was obtained for the strategy in which substrate and enzyme were added simultaneously (0.35 kg glucose kWh −1). Determinations of glucose concentration, power consumption, and apparent viscosity were made throughout the experiments, and the different strategies were compared in terms of energy efficiency (mass of glucose produced according to the energy consumed). In this study, one batch and four fed-batch strategies for solids and/or enzyme feeding during the enzymatic hydrolysis of sugarcane bagasse were evaluated. The use of fed-batch operation offers a promising way to circumvent these problems. However, this increase in biomass can lead to problems including increased mass and heat transfer resistance, decreased cellulose conversion, and increased apparent viscosity with the associated increase in power consumption. The minimization of costs in the distillation step of lignocellulosic ethanol production requires the use of a high solids loading during the enzymatic hydrolysis to obtain a more concentrated glucose liquor.
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