title: Pretreatment of corn stover for sugar production using dilute hydrochloric acid followed by lime.
abstract: In this study, a two stage process was evaluated to increase the sugar recovery. Firstly, corn stover was treated with diluted hydrochloric acid to maximize the xylose yield, and then the residue was treated with lime to alter the lignin structure and swell the cellulose surface. The optimal condition was 120 °C and 40 min for diluted hydrochloric acid pretreatment followed by lime pretreatment at 60 °C for 12h with lime loading at 0.1 g/g of substrate. The glucose and xylose yield was 78.0% and 97.0%, respectively, with cellulase dosage at 5 FPU/g of substrate. The total glucose yield increased to 85.9% when the cellulase loading was increased to 10 FPU/g of substrate. This two stage process was effective due to the swelling of the internal surface, an increase in the porosity and a decrease in the degree of polymerization.
authors: Department of Thermal Science and Energy Engineering, University of Science and Technology of China, Hefei 230026, People's Republic of China.
authors: Shuai
authors: S
authors: Zu
authors: Department of Thermal Science and Energy Engineering, University of Science and Technology of China, Hefei 230026, People's Republic of China. Electronic address: liwenzhi@ustc.edu.cn.
authors: Wen-zhi
authors: WZ
authors: Li
authors: Department of Thermal Science and Energy Engineering, University of Science and Technology of China, Hefei 230026, People's Republic of China.
authors: Mingjian
authors: M
authors: Zhang
authors: Department of Thermal Science and Energy Engineering, University of Science and Technology of China, Hefei 230026, People's Republic of China.
authors: Zihong
authors: Z
authors: Li
authors: Department of Forest Biomaterials, North Carolina State University, Raleigh, NC 27695-8005, USA.
authors: Ziyu
authors: Z
authors: Wang
authors: Department of Forest Biomaterials, North Carolina State University, Raleigh, NC 27695-8005, USA.
authors: Hasan
authors: H
authors: Jameel
authors: Department of Forest Biomaterials, North Carolina State University, Raleigh, NC 27695-8005, USA.
authors: Hou-min
authors: HM
authors: Chang
mesh_terms: D001709:Biotechnology / Q000379:methods*; D017610:Calcium Compounds / Q000494:pharmacology*; D002241:Carbohydrates / Q000096:biosynthesis; D002480:Cellulase / Q000494:pharmacology; D006851:Hydrochloric Acid / Q000494:pharmacology*; D006868:Hydrolysis / Q000187:drug effects; D010087:Oxides / Q000494:pharmacology*; D016062:Porosity; D014866:Waste Products; D003313:Zea mays / Q000187:drug effects*
chemical_list: D017610:Calcium Compounds; D002241:Carbohydrates; D010087:Oxides; D014866:Waste Products; C016538:lime; D002480:Cellulase; D006851:Hydrochloric Acid
keywords: Corn stover; Dilute acid; Enzymatic hydrolysis; Lime; Pretreatment