title: Coproduction of xylose, lignosulfonate and ethanol from wheat straw.
abstract: A novel integrated process to coproduce xylose, lignosulfonate and ethanol from wheat straw was investigated. Firstly, wheat straw was treated by dilute sulfuric acid and xylose was recovered from its hydrolyzate. Its optimal conditions were 1.0wt% sulfuric acid, 10% (w/v) wheat straw loading, 100°C, and 2h. Then the acid treated wheat straw was treated by sulfomethylation reagent and its hydrolyzate containing lignosulfonate was directly recovered. Its optimal conditions were 150°C, 15% (w/v) acid treated wheat straw loading, and 5h. Finally, the two-step treated wheat straw was converted to ethanol through enzymatic hydrolysis and microbial fermentation. Under optimal conditions, 1kg wheat straw could produce 0.225kg xylose with 95% purity, 4.16kg hydrolyzate of sulfomethylation treatment containing 5.5% lignosulfonate, 0.183kg ethanol and 0.05kg lignin residue. Compared to present technology, this process is a potential economically profitable wheat straw biorefinery.
authors.affiliation: Key Laboratory for Green Chemical Process of Ministry of Education, Hubei Key Laboratory of Novel Chemical Reactor and Green Chemical Technology, School of Chemical Engineering and Pharmacy, Wuhan Institute of Technology, Wuhan 430073, People's Republic of China. Electronic address: whictzhusd@sina.com.
authors.forename: Shengdong
authors.initials: S
authors.lastname: Zhu
authors.affiliation: Key Laboratory for Green Chemical Process of Ministry of Education, Hubei Key Laboratory of Novel Chemical Reactor and Green Chemical Technology, School of Chemical Engineering and Pharmacy, Wuhan Institute of Technology, Wuhan 430073, People's Republic of China.
authors.forename: Wangxiang
authors.initials: W
authors.lastname: Huang
authors.affiliation: Key Laboratory for Green Chemical Process of Ministry of Education, Hubei Key Laboratory of Novel Chemical Reactor and Green Chemical Technology, School of Chemical Engineering and Pharmacy, Wuhan Institute of Technology, Wuhan 430073, People's Republic of China.
authors.forename: Wenjing
authors.initials: W
authors.lastname: Huang
authors.affiliation: Key Laboratory for Green Chemical Process of Ministry of Education, Hubei Key Laboratory of Novel Chemical Reactor and Green Chemical Technology, School of Chemical Engineering and Pharmacy, Wuhan Institute of Technology, Wuhan 430073, People's Republic of China.
authors.forename: Ke
authors.initials: K
authors.lastname: Wang
authors.affiliation: Key Laboratory for Green Chemical Process of Ministry of Education, Hubei Key Laboratory of Novel Chemical Reactor and Green Chemical Technology, School of Chemical Engineering and Pharmacy, Wuhan Institute of Technology, Wuhan 430073, People's Republic of China.
authors.forename: Qiming
authors.initials: Q
authors.lastname: Chen
authors.affiliation: Key Laboratory for Green Chemical Process of Ministry of Education, Hubei Key Laboratory of Novel Chemical Reactor and Green Chemical Technology, School of Chemical Engineering and Pharmacy, Wuhan Institute of Technology, Wuhan 430073, People's Republic of China.
authors.forename: Yuanxin
authors.initials: Y
authors.lastname: Wu
mesh_terms: D000143:Acids / Q000737:chemistry; D001709:Biotechnology / Q000379:methods*; D002241:Carbohydrates / Q000737:chemistry; D002480:Cellulase / Q000737:chemistry; D002482:Cellulose / Q000737:chemistry; D000431:Ethanol / Q000737:chemistry*; D005285:Fermentation; D005947:Glucose / Q000737:chemistry; D006868:Hydrolysis; D008031:Lignin / Q000031:analogs & derivatives* / Q000737:chemistry; D012441:Saccharomyces cerevisiae / Q000378:metabolism; D013464:Sulfuric Acids / Q000737:chemistry; D013696:Temperature; D014908:Triticum / Q000737:chemistry*; D014994:Xylose / Q000737:chemistry*
chemical_list: D000143:Acids; D002241:Carbohydrates; D013464:Sulfuric Acids; D000431:Ethanol; C001545:lignosulfuric acid; D002482:Cellulose; D008031:Lignin; D014994:Xylose; D002480:Cellulase; D005947:Glucose; C033158:sulfuric acid
keywords: Biorefinery; Ethanol; Lignosulfonate; Wheat straw; Xylose