A novel model for process of pentosan digestion during steam treatment of green bamboo

作者：Luo, Xiaolin; Hu, Huichao; Ma, Xiaojuan; Cao, Shilin; Li, Canghai; Huang, Liulian^*; Chen, Lihui

来源：Huagong Xuebao/CIESC Journal, 2013, 64(5): 1766-1772.

DOI：10.3969/j.issn.0438-1157.2013.05.036

• Correlation coefficient
• First order kinetics
• Green bamboos
• Modification
• Non-isothermal process
• Potential hydrolysis degrees
• Prediction model
• Severity factor

Green bamboo was hydrolyzed in a range of certain condition by steam treatment. Based on the parameters obtained in theoretical kinetic model, a novel model was developed for prediction of pentosan leaching out during steam treatment of green bamboo. Firstly, it should be pointed out that the traditional model based on derivation of severity factor was not successful for prediction of the pentosan leaching out. So, the development of a novel model is necessary. Based on the experimental data of pentosan digestion at isothermal pseudo-homogeneous process, the activation energy and frequency factor for irreversible first order kinetics was calculated as 48.1 kJ·mol-1and 4330 min-1respectively. After introducing "potential hydrolysis degree(hd)"into the novel prediction model, numerical algorithm was used for calculation of severity factor in non-isothermal process. The model containing the severity factor was effective for prediction of pentosan leaching out during whole treatment process of green bamboo by steam. The agreement between model predicted and experimental data is good, and the correlation coefficient is 97%. This model could be used for control of pentosan digestion from green bamboo with steam treatment and for clarifying the effect of pretreatment on subsequent enzymatic hydrolysis.

• 出版日期2013-5
• 单位华南理工大学