绿竹蒸汽处理过程中戊聚糖溶出的新模型

doi:10.3969/j.issn.0438-1157.2013.05.036

化工学报 ›› 2013, Vol. 64 ›› Issue (5): 1766-1772.DOI: 10.3969/j.issn.0438-1157.2013.05.036

绿竹蒸汽处理过程中戊聚糖溶出的新模型

罗小林^1,2,3, 胡会超², 马晓娟¹, 曹石林¹, 李沧海¹, 黄六莲¹, 陈礼辉¹

1. 福建农林大学材料工程学院, 福建福州 350002;
2. 华南理工大学制浆造纸工程国家重点实验室, 广东广州 510641;
3. 中国科学院生物燃料重点实验室, 中国科学院青岛生物能源与过程研究所, 山东青岛 266101

收稿日期:2012-08-16 修回日期:2012-10-20 出版日期:2013-05-05 发布日期:2013-05-05
通讯作者: 黄六莲,陈礼辉
作者简介:罗小林(1983-),男,博士研究生,讲师。
基金资助:
教育部博士点基金项目(20123515120018);福建省自然科学基金项目(2013J0102);福建省教育厅JK项目(JK2012015);中国科学院生物燃料重点实验室开放基金项目(CASKLB201308);华南理工大学制浆与造纸工程国家重点实验室开放基金项目(201222)。

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

LUO Xiaolin^1,2,3, HU Huichao², MA Xiaojuan¹, CAO Shilin¹, LI Canghai¹, HUANG Liulian¹, CHEN Lihui¹

1. College of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou 350002, Fujian, China;
2. State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510641, Guangdong, China;
3. Key Laboratory of Biofuel, Chinese Academy of Sciences, Qingdao Institute of Bioenergy and Bioprocess Technology, Qingdao 266101, Shandong, China

Received:2012-08-16 Revised:2012-10-20 Online:2013-05-05 Published:2013-05-05
Supported by:
supported by Doctoral Fund of Ministry of Education of China (20123515120018),the Natural Science Foundation of Fujian Province(2013J0102), JK Project of Fujian Provincial Department of Education (JK2012015), Open Foundation of the Chinese Academy of Sciences Key Laboratory of Biofuels (CASKLB201308) and Open Foundation of the State Key Laboratory of Pulp and Paper Engineering (201222).

摘要/Abstract

摘要： 在一定条件范围内对绿竹进行蒸汽处理,基于理论动力学模型获得的参数,建立其在该过程中戊聚糖溶出的新模型。结果表明,基于传统剧烈因子衍生的戊聚糖溶出预测模型并不适用。通过等温阶段戊聚糖移除动力学的研究,求得其溶出活化能和指前因子分别为48.1 kJ·mol^-1和4330 min^-1;将此活化能和"潜在移除度" 引入戊聚糖移除率预测模型,同时采用数值算法累积计算升温阶段修正的剧烈因子,最终发现该修正模型可准确预测蒸汽升温和保温处理过程中绿竹戊聚糖的移除率(预测值和实验值之间相关系数的平方达97%)。该模型的建立对绿竹蒸汽处理过程中戊聚糖溶出率的预测和控制以及间接阐明该预处理方法对后续酶水解效率产生影响等方面具有一定的指导意义。

关键词: 戊聚糖移除率, 剧烈因子, 修正, 预测模型, 绿竹

Abstract: 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穖ol^-1 and 4330 min^-1 respectively.After introducing "potential hydrolysis degree(h_d)" 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.

Key words: pentosan removal, severity factor, modification, prediction model, green bamboo

中图分类号:

TQ013.2

罗小林, 胡会超, 马晓娟, 曹石林, 李沧海, 黄六莲, 陈礼辉. 绿竹蒸汽处理过程中戊聚糖溶出的新模型[J]. 化工学报, 2013, 64(5): 1766-1772.

LUO Xiaolin, HU Huichao, MA Xiaojuan, CAO Shilin, LI Canghai, HUANG Liulian, CHEN Lihui. A novel model for process of pentosan digestion during steam treatment of green bamboo[J]. CIESC Journal, 2013, 64(5): 1766-1772.

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绿竹蒸汽处理过程中戊聚糖溶出的新模型

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

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