Enhancing enzyme hydrolysis ofSorghumstalk by CO2-pressurized liquid hot water pretreatment
| Autor: | Jian-Zhong Yin, Meng-Yuan Zhen, Qin-Qin Xu, Meng-Jiao Zhao, Gang-Xu, Guo-Min Li |
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| Rok vydání: | 2016 |
| Předmět: |
Carbonic acid
chemistry.chemical_classification Environmental Engineering Chromatography biology Renewable Energy Sustainability and the Environment Chemistry Scanning electron microscope 020209 energy General Chemical Engineering 02 engineering and technology Sorghum biology.organism_classification Catalysis Reducing sugar chemistry.chemical_compound Stalk Enzymatic hydrolysis Yield (chemistry) 0202 electrical engineering electronic engineering information engineering Environmental Chemistry Waste Management and Disposal General Environmental Science Water Science and Technology |
| Zdroj: | Environmental Progress & Sustainable Energy. 36:208-213 |
| ISSN: | 1944-7442 |
| Popis: | CO2-pressurized liquid hot water was applied to pretreat Sorghum stalk to increase its accessibility for enzyme hydrolysis. Pretreatment temperatures tested ranged from 180 to 220°C, and reaction times varied between 10 and 30 min. The highest total reducing sugar yield of 81.54% was obtained for the sample pretreated at 200°C and 20 min. Different from the N2-pressurized liquid hot water process, the generated carbonic acid in the CO2-pressurized method acted as catalyst in the pretreatment process. It was found that the reducing sugar yield increased significantly at lower temperature and shorter reaction time with the addition of CO2. Finally, X-ray diffraction and scanning electron microscope analysis were used to investigate the microstructure of the Sorghum stalk before and after the pretreatment. © 2016 American Institute of Chemical Engineers Environ Prog, 36: 208–213, 2017 |
| Databáze: | OpenAIRE |
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