Fast Pyrolysis of Peanut Husk Agroindustrial Waste: Intensification of Anhydro Sugar (Levoglucosan) Production
| Autor: | Euripedes Garcia Silveira Junior, Fabio L. Olivares, Euclésio Simionatto, Nathalia Ribeiro Ferreira da Silva, Sergio Antonio Fernandes, Oselys Rodriguez Justo, Victor Haber Perez, Geraldo Ferreira David |
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| Rok vydání: | 2021 |
| Předmět: |
0106 biological sciences
Environmental Engineering Renewable Energy Sustainability and the Environment 020209 energy Vanillin Levoglucosan Syringol Biomass 02 engineering and technology Furfural 01 natural sciences chemistry.chemical_compound chemistry 010608 biotechnology 0202 electrical engineering electronic engineering information engineering Lignin Guaiacol Waste Management and Disposal Pyrolysis Nuclear chemistry |
| Zdroj: | Waste and Biomass Valorization. 12:5573-5585 |
| ISSN: | 1877-265X 1877-2641 |
| DOI: | 10.1007/s12649-021-01403-3 |
| Popis: | Peanut husks are agro-industrial waste and represent about 20 wt% of the peanut harvest. This waste product was subjected to fast pyrolysis in a pyroprobe reactor coupled with GC/MS at temperatures ranging from 350 to 600 °C to maximize levoglucosan production. Prior to pyrolysis, the biomass was washed with acetic acid (10 wt%) to remove the alkali and alkaline earth metals. Levoglucosan production from pretreated biomass increased for all the temperatures studied. However, the best result was observed at 550 °C. At this temperature, 35 wt% of produced levoglucosan was found in the volatile fraction, representing around a nine-fold increase in levoglucosan production compared to the untreated biomass. These results may be due to the removal of the alkali and alkaline earth metals or the morphological changes observed in the biomass via SEM. While the yields of undesirable compounds derived from lignin that interfere with levoglucosan purification and its applications (phenol, guaiacol, syringol and catechol) decreased as the pyrolysis temperature increased, the yields of other compounds (vanillin, eugenol, cresol, 4-methylcyclohexanone, furfural and acetaldehyde) increased. Our results confirm that pretreated peanut husks have great potential in levoglucosan production via fast pyrolysis. |
| Databáze: | OpenAIRE |
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