title: Obtaining fermentable sugars by dilute acid hydrolysis of hemicellulose and fast pyrolysis of cellulose.
abstract: The objective of this study was to get fermentable sugars by dilute acid hydrolysis of hemicellulose and fast pyrolysis of cellulose from sugarcane bagasse. Hemicellulose could be easily hydrolyzed by dilute acid as sugars. The remained solid residue of acid hydrolysis was utilized to get levoglucosan by fast pyrolysis economically. Levoglucosan yield from crystalline cellulose could be as high as 61.47%. Dilute acid hydrolysis was also a promising pretreatment for levoglucosan production from lignocellulose. The dilute acid pretreated sugarcane bagasse resulted in higher levoglucosan yield (40.50%) in fast pyrolysis by micropyrolyzer, which was more effective than water washed (29.10%) and un-pretreated (12.84%). It was mainly ascribed to the effective removal of alkali and alkaline earth metals and the accumulation of crystalline cellulose. This strategy seems a promising route to achieve inexpensive fermentable sugars from lignocellulose for biorefinery.
authors.affiliation: Key Laboratory of Renewable Energy, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China.
authors.forename: Liqun
authors.initials: L
authors.lastname: Jiang
authors.affiliation: Key Laboratory of Renewable Energy, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China.
authors.forename: Anqing
authors.initials: A
authors.lastname: Zheng
authors.affiliation: Key Laboratory of Renewable Energy, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China. Electronic address: zhaozl@ms.giec.ac.cn.
authors.forename: Zengli
authors.initials: Z
authors.lastname: Zhao
authors.affiliation: Key Laboratory of Renewable Energy, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China.
authors.forename: Fang
authors.initials: F
authors.lastname: He
authors.affiliation: Key Laboratory of Renewable Energy, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China.
authors.forename: Haibin
authors.initials: H
authors.lastname: Li
authors.affiliation: Key Laboratory of Renewable Energy, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China.
authors.forename: Weiguo
authors.initials: W
authors.lastname: Liu
mesh_terms: D000468:Alkalies / Q000737:chemistry; D001709:Biotechnology / Q000379:methods*; D050260:Carbohydrate Metabolism; D002241:Carbohydrates / Q000737:chemistry*; D002482:Cellulose / Q000737:chemistry* / Q000378:metabolism; D005285:Fermentation; D005947:Glucose / Q000031:analogs & derivatives* / Q000737:chemistry; D006868:Hydrolysis; D011134:Polysaccharides / Q000737:chemistry* / Q000378:metabolism
chemical_list: D000468:Alkalies; D002241:Carbohydrates; D011134:Polysaccharides; C014989:1,6-anhydro-beta-glucopyranose; C007916:hemicellulose; D002482:Cellulose; D005947:Glucose
keywords: Dilute acid hydrolysis; Fast pyrolysis; Levoglucosan; Lignocellulose