Ethanol production from mixtures of sugarcane bagasse and Dioscorea composita extracted residue with high solid loading. (June 2018)

• Record Type: Journal Article
• Authors: Ye, Guangying; Zeng, Defu; Zhang, Shuaishuai; Fan, Meishan; Zhang, Hongdan; Xie, Jun
• Is Part Of: Bioresource technology. Volume 257(2018)
• Page Start: 23
• Page End: 29
• Publication Date: 2018-06
• Subjects: Sugarcane bagasse -- Dioscorea composita extracted residue -- SSF -- Cellulosic ethanol; Biomass -- Periodicals; Biomass energy -- Periodicals; Bioremediation -- Periodicals; Agricultural wastes -- Periodicals; Factory and trade waste -- Periodicals; Organic wastes -- Periodicals; Bioénergie -- Périodiques; Déchets agricoles -- Périodiques; Déchets industriels -- Périodiques; Déchets organiques -- Périodiques; Déchets (Combustible) -- Périodiques; 662.88
• DOI: 10.1016/j.biortech.2018.02.008
• Languages: English
• ISSNs: 0960-8524

Abstract

Graphical abstract: Highlights: Sugarcane bagasse and DER are sufficient raw material for cellulosic ethanol. Starchy DER mixed with sugarcane bagasse boost ethanol concentration and yields. The highest ethanol of 82.83 g/L could be obtained by fed-batch and surfactant. The co-fermentation presented a competitive form to economy of cellulosic ethanol. Abstract: Various mixing ratios of alkali pretreated sugarcane bagasse and starch-rich waste Dioscorea composita hemls extracted residue (DER) were evaluated via simultaneous saccharification and fermentation (SSF) with 12% (w/w) solid loading, and the mixture ratio of 1:1 achieved the highest ethanol concentration and yield. When the solid loading was increased from 12% to 32%, the ethanol concentration was increased to 72.04 g/L, whereas the ethanol yield was reduced from 84.40% to 73.71%. With batch feeding and the addition of 0.1% (w/v) Tween 80, the final ethanol concentration and yield of SSF at 34% loading were 82.83 g/L and 77.22%, respectively. Due to the integration with existing starch-based ethanol industry, the co-fermentation is expected to be a competitive alternative form for cellulosic ethanol production.