Pretreatment of Sunflower Stalk with CO2 Compressed by High Temperature Liquid Water

doi:10.3969/j.issn.1672-6952.2020.05.007

Journal of Liaoning Petrochemical University ›› 2020, Vol. 40 ›› Issue (5): 39-43.DOI: 10.3969/j.issn.1672-6952.2020.05.007

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Pretreatment of Sunflower Stalk with CO₂ Compressed by High Temperature Liquid Water

Zhao Mengjiao ^1,2， Jia Guanlan¹， Meng Jiayu¹， Chen Jicheng³

Received:2019-10-30 Revised:2019-11-26 Published:2020-10-30 Online:2020-11-12
Contact: 1.School of Mechanical Engineering，Liaoning Shihua University，Fushun Liaoning 113001，China； 2.School of Chemical Engineering，Dalian University of Technology，Dalian Liaoning 116024，China； 3.Yuandong Shale Oil Refining Co. Ltd.，Fushun Liaoning 113001，China

CO₂加压高温液态水预处理向日葵秆

赵孟姣^1,2，贾冠兰¹，孟嘉峪¹，陈继程³

1.辽宁石油化工大学机械工程学院，辽宁抚顺 113001； 2.大连理工大学化工学院，辽宁大连 116024；3.远东页岩炼化有限责任公司，辽宁抚顺 113001

作者简介:赵孟姣（1979-），女，博士研究生，讲师，从事生物质预处理及转化方面的研究；E-mail：leafean@126.com
基金资助:
国家自然科学基金联合基金项目“木质纤维素催化转化高附加值化学品乙醇酸甲酯”（U1662130）

Abstract

Abstract: Liquid hot water was applied to pretreat sunflower stalk to increase its accessibility for enzyme hydrolysis. Pretreatment temperatures, reaction times and pressurized gases were investigated. The results show that the yield of enzyme hydrolysis sugar sun flower stalk is increased after pretreatment. The highest total reducing sugar yield of 83.0% is obtained for the sample pretreated at 200 ℃ and 20 min. Compared with N₂, CO₂ pressurized high temperature liquid water treatment at low temperature and short time has catalytic effect. Finally, XRD and SEM analysis are used to investigate the microstructure of the sunflower stalk before and after the pretreatment.

Key words: High temperature liquid water, Pretreatment, Enzyme hydrolysis sugar yield, CO₂

摘要： 以向日葵秆为原料，采用高温液态水进行预处理以提高后续纤维素酶水解糖收率。考察了温度、时间和加压方式对还原糖收率的影响。结果表明，原料经预处理后，酶解糖收率增加明显。原料经200 ℃、20 min预处理后，总糖收率达83.0%；与N2相比，CO2加压高温液态水低温短时间处理具有催化效果。最后，通过XRD和SEM表征方法，对预处理前后向日葵秆微观变化情况进行了分析

关键词: 高温液态水, 预处理, 糖收率, CO₂

Zhao Mengjiao， Jia Guanlan， Meng Jiayu， Chen Jicheng. Pretreatment of Sunflower Stalk with CO₂ Compressed by High Temperature Liquid Water[J]. Journal of Liaoning Petrochemical University, 2020, 40(5): 39-43.

赵孟姣，贾冠兰，孟嘉峪，陈继程. CO₂加压高温液态水预处理向日葵秆[J]. 辽宁石油化工大学学报, 2020, 40(5): 39-43.

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Pretreatment of Sunflower Stalk with CO₂ Compressed by High Temperature Liquid Water

CO₂加压高温液态水预处理向日葵秆

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