title: Pretreatment of corn stover silage with Fe(NO(3))(3) for fermentable sugar production.
abstract: Corn stover silage is an attractive raw material for the production of biofuels and chemicals due to its high content of carbohydrates and easy degradability. The effects of Fe(NO(3))(3) pretreatment conditions on sugar yields were investigated for corn stover silage. In addition, a combined severity factor was used to evaluate the effect of pretreatment conditions on the concentration of total sugars and inhibitors. Optimum pretreatment condition was obtained at 150 °C for 10 min with 0.05 M Fe(NO(3))(3), at which the yields of soluble xylose and glucose in liquid achieved 91.80% of initial xylose, 96.74% of initial arabinose and 19.09% of initial glucose, respectively, meanwhile, 91.84% of initial xylose, 98.24% of initial arabinose, and 19.91% of initial glucose were removed. In addition, a severity analysis showed that the maximum sugar concentration of 33.48 g/l was achieved at combined severity parameter value of 0.62, while the inhibitor concentration was only 0.03 g/l. Fe(NO(3))(3) is an effective catalyst to enhance hemicellulose hydrolysis in corn stover silage, the yields of monomeric xylose in the liquid fraction reached as high as 91.06% of initial xylose and 96.22% of initial arabinose, respectively.
authors.affiliation: School of Environment Science and Technology, Tianjin University, Tianjin, 300072, China.
authors.forename: Youshan
authors.initials: Y
authors.lastname: Sun
authors.forename: Xuebin
authors.initials: X
authors.lastname: Lu
authors.forename: Rui
authors.initials: R
authors.lastname: Zhang
authors.forename: Xinying
authors.initials: X
authors.lastname: Wang
authors.forename: Shuting
authors.initials: S
authors.lastname: Zhang
mesh_terms: D001419:Bacteria / Q000378:metabolism*; D001709:Biotechnology / Q000379:methods*; D050260:Carbohydrate Metabolism; D002241:Carbohydrates / Q000737:chemistry*; D005285:Fermentation; D005290:Ferric Compounds / Q000737:chemistry; D006358:Hot Temperature; D006868:Hydrolysis; D009566:Nitrates / Q000737:chemistry; D012820:Silage / Q000032:analysis* / Q000382:microbiology; D003313:Zea mays / Q000737:chemistry* / Q000382:microbiology
chemical_list: D002241:Carbohydrates; D005290:Ferric Compounds; D009566:Nitrates; C025302:ferric nitrate