title: Hydrolysis of sweet sorghum bagasse and eucalyptus wood chips with liquid hot water.
abstract: The chemical composition, hydrolysis products, and kinetics during liquid hot water pretreatment of sweet sorghum bagasse (SSB) and eucalyptus wood chips (EWC) were investigated. Under optimal conditions, a total xylose recovery of 79.6% and 55.6% for SSB and of 74.9% and 84.4% for EWC was achieved after pretreatments in a step-change flow rate reactor (184 °C, 20 ml/min, 8 min, and 10 ml/min, 10 min) and batch stirred reactor (184 °C, 5%w/v, 18 min), respectively. More than 90% of the xylose was recovered as oligomers from SSB, independent of the type of reactor employed. The activation energies of xylan decomposition of SSB in the step-change flow rate reactor was 6.5-fold greater than that of EWC in the batch stirred reactor due to accumulation of acidic products. These findings show that sugar recovery is dependent on the reactor configuration for specific substrates.
authors.affiliation: Guangzhou Institute of Energy Conversion, Key Laboratory of Renewable Energy and Gas Hydrate, Chinese Academy of Sciences, Guangzhou 510640, China. mcampbel@mtu.edu
authors.forename: Qiang
authors.initials: Q
authors.lastname: Yu
authors.forename: Xinshu
authors.initials: X
authors.lastname: Zhuang
authors.forename: Qiong
authors.initials: Q
authors.lastname: Wang
authors.forename: Wei
authors.initials: W
authors.lastname: Qi
authors.forename: Xuesong
authors.initials: X
authors.lastname: Tan
authors.forename: Zhenhong
authors.initials: Z
authors.lastname: Yuan
mesh_terms: D061249:Batch Cell Culture Techniques; D019149:Bioreactors; D001709:Biotechnology / Q000379:methods*; D002482:Cellulose / Q000032:analysis / Q000737:chemistry*; D005052:Eucalyptus / Q000737:chemistry*; D005662:Furaldehyde / Q000032:analysis; D006358:Hot Temperature; D006868:Hydrolysis; D007700:Kinetics; D008031:Lignin / Q000032:analysis; D009682:Magnetic Resonance Spectroscopy; D008956:Models, Chemical; D011134:Polysaccharides / Q000032:analysis; D012212:Rheology; D045868:Sorghum / Q000737:chemistry*; D014867:Water / Q000737:chemistry*; D014934:Wood / Q000737:chemistry*; D014994:Xylose / Q000032:analysis
chemical_list: D011134:Polysaccharides; D014867:Water; C007916:hemicellulose; D002482:Cellulose; D008031:Lignin; C027433:bagasse; D014994:Xylose; D005662:Furaldehyde