title: Efficient production of glucose by microwave-assisted acid hydrolysis of cellulose hydrogel.
abstract: To improve the production of glucose from cellulose, a simple and effective route was developed. This process uses a combination of a step of cellulose dissolution in aqueous NaOH/urea solution and then regeneration with water, followed by an acid hydrolysis step under microwave irradiation. The method is effective to obtain glucose from α-cellulose, microcrystalline cellulose, filter paper, ramie fiber and absorbent cotton. Increased with the acid concentration the glucose yield from hydrogel hydrolysis increased from 0.42% to 44.6% at 160 °C for 10 min. Moreover, the ozone treatment of cellulose in NaOH/urea solution before regeneration significantly enhanced the hydrolysis efficiency with a glucose yield of 59.1%. It is believed that the chains in cellulose hydrogel are relatively free approached, making that the acids easily access the β-glycosidic bonds.
authors.affiliation: School of Environmental Engineering, Wuhan Textile University, Wuhan 430073, China.
authors.forename: Binzhe
authors.initials: B
authors.lastname: Sun
authors.affiliation: School of Environmental Engineering, Wuhan Textile University, Wuhan 430073, China.
authors.forename: Lian
authors.initials: L
authors.lastname: Duan
authors.affiliation: School of Chemistry and Chemical Engineering, Wuhan Textile University, Wuhan 430073, China.
authors.forename: Gege
authors.initials: G
authors.lastname: Peng
authors.affiliation: School of Chemistry and Chemical Engineering, Wuhan Textile University, Wuhan 430073, China.
authors.forename: Xiaoxia
authors.initials: X
authors.lastname: Li
authors.affiliation: School of Environmental Engineering, Wuhan Textile University, Wuhan 430073, China. Electronic address: xahspinel@sina.com.
authors.forename: Aihua
authors.initials: A
authors.lastname: Xu
mesh_terms: D002482:Cellulose / Q000737:chemistry*; D005947:Glucose / Q000737:chemistry*; D020136:Hydrogel, Polyethylene Glycol Dimethacrylate / Q000737:chemistry*; D006868:Hydrolysis; D008872:Microwaves; D012972:Sodium Hydroxide / Q000737:chemistry; D014508:Urea / Q000737:chemistry
chemical_list: D020136:Hydrogel, Polyethylene Glycol Dimethacrylate; D012972:Sodium Hydroxide; D014508:Urea; D002482:Cellulose; D005947:Glucose; C109691:microcrystalline cellulose
keywords: Cellulose; Glucose; Hydrogel; Hydrolysis; Microwave