Hydrothermal and organic-chemical treatments of eucalyptus biomass for industrial purposes
| Autor: | Êmilly Wakim de Almeida, Benedito Rocha Vital, Carlos Miguel Simões da Silva, Angélica de Cássia Oliveira Carneiro, Fábio de Ávila Rodrigues, Welliton Lelis Cândido |
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| Rok vydání: | 2019 |
| Předmět: |
0106 biological sciences
Environmental Engineering Oxalic acid Organosolv Biomass Bioengineering 010501 environmental sciences Raw material complex mixtures 01 natural sciences chemistry.chemical_compound Hydrolysis 010608 biotechnology Cellulose Waste Management and Disposal 0105 earth and related environmental sciences Eucalyptus Renewable Energy Sustainability and the Environment General Medicine Pulp and paper industry Wood chemistry visual_art visual_art.visual_art_medium Bark |
| Zdroj: | Bioresource technology. 289 |
| ISSN: | 1873-2976 |
| Popis: | This study aimed to evaluate the promising feasibility of the hydrothermal pre-processing of eucalyptus wood and eucalyptus bark under organosolv and organic acid conditions to produce a highly concentrated cellulose feedstock. For that, particulate samples of both biomasses were heated in water solutions containing from 0 to 50%vol/vol of ethanol and from 0 to 50 mmol.L−1 of oxalic acid at temperatures between 140 and 180 °C. Significant differences on the thermal degradation profiles were observed for both biomasses indicating the partial hydrolysis converted them into a more homogeneous solid fraction with higher contents of cellulose. It was also observed a significant variation of the glycan content from approximately 39 to 76% for wood particles, whereas the variation for bark was from 32 to 50%. In general, the proposed pre-processing route was considered potentially feasible to concentrate the cellulose/glycan contents of eucalyptus biomasses for subsequent industrial utilization. |
| Databáze: | OpenAIRE |
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