Subcritical water hydrolysis of rice straw for reducing sugar production with focus on degradation by-products and kinetic analysis

Bioresource Technology
Richen LinKefa Cen

Abstract

The competitive reactions of reducing sugar production and degradation in the subcritical water hydrolysis of rice straw were investigated to optimise reducing sugar yield. The optimised conditions (280°C, 20 MPa, rice straw concentration of 5 wt.% and agitation speed of 200 rpm) resulted in a reducing sugar yield of 0.346 g/g rice straw because of the enhanced reducing sugar production and decreased sugar degradation. The sugar yield increased when the temperature increased from 250°C to 280°C, but it decreased when the temperature further increased to 300°C because of the degradation of monosaccharides (e.g. glucose and xylose) into by-products (e.g. 2-methyltetrahydrofuran and acetic acid). A first-order reaction model was developed to elucidate the competitive reaction kinetics of sugar production and degradation at various temperatures. The highest reducing sugar yield based on the model was achieved at 280°C with the highest production and lowest degradation rates.

References

Jan 29, 2008·Bioresource Technology·Ketmanee WatchararujiArtiwan Shotipruk
Jul 5, 2008·Bioresource Technology·A T W M Hendriks, G Zeeman
Aug 14, 2010·Science·Chris SomervilleStephen P Long
Dec 20, 2011·Bioresource Technology·Yan WangMingzhi Huang
Jul 14, 2012·Bioscience, Biotechnology, and Biochemistry·Boonnakhom TangkhavanichShuji Adachi
Oct 19, 2013·Bioresource Technology·David M WallJerry D Murphy
Jun 16, 2014·Bioresource Technology·Alexander BauerSvein J Horn

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Citations

May 23, 2015·Bioresource Technology·Mood MohanVaibhav V Goud
Oct 2, 2017·Bioprocess and Biosystems Engineering·Li-Qun JinYu-Guo Zheng
Jan 14, 2021·Carbohydrate Polymers·Xiheng KangXueping Song
Aug 3, 2017·Bioresource Technology·D Lachos-PerezT Forster-Carneiro

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