Synergistic effect of acidity balance and hydrothermal pretreatment severity on alkali extraction of hemicelluloses from corn stalk
| Autor: | Usama Shakeel, Xia Xu, Jian Xu, Yan Tingxuan, Haijun Wu, Chao Wang, Wang Wei |
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| Rok vydání: | 2021 |
| Předmět: |
Renewable Energy
Sustainability and the Environment 020209 energy Dispersity Extraction (chemistry) Extraction ratio 02 engineering and technology 010501 environmental sciences 01 natural sciences Hydrothermal circulation chemistry.chemical_compound chemistry Stalk Enzymatic hydrolysis 0202 electrical engineering electronic engineering information engineering Cellulose Dissolution 0105 earth and related environmental sciences Nuclear chemistry |
| Zdroj: | Biomass Conversion and Biorefinery. 12:459-468 |
| ISSN: | 2190-6823 2190-6815 |
| DOI: | 10.1007/s13399-020-01196-w |
| Popis: | The current hemicelluloses extraction methods have problems such as low extraction ratio and quality. In the previous study, a new pH pre-corrected hydrothermal pretreatment has been proved effective in improving enzymatic hydrolysis of cellulose while retaining higher hemicelluloses without degradation. In this investigation, the synergistic effect of alkali loading and hydrothermal pretreatment severity on hemicelluloses preservation was studied. After pretreatment, the hemicelluloses were extracted with alkali. The results show that hemicelluloses extracted with 10% (w/v) NaOH after pH pre-corrected hydrothermal pretreatment at the severity of 2.0 contained no cellulose. At this condition, the ratios of hemicelluloses dissolution and recovery were the highest. The extracted hemicelluloses had the lowest color value, branch degree, and polydispersity. |
| Databáze: | OpenAIRE |
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