Potential Utilization of Crude Glycerin in Organosolv Pretreatment of Eucalyptus Residual Biomass
| Autor: | Da Silva Lima, I., Reis Soares, R., Rezende, M.C., Rossa, V. |
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| Jazyk: | angličtina |
| Rok vydání: | 2022 |
| Předmět: | |
| DOI: | 10.5071/30theubce2022-5bv.6.18 |
| Popis: | With the growing search for alternative and renewable energy sources, lignocellulosic biomass is becoming more and more relevant. In Brazil, due to the abundance and variety of biomass, the forestry sector can be highlighted as an important segment in the construction of a green economy, since they have been investing in the total use of forests, including generated residues. The objective of this work is to perform in the residual biomass of eucalyptus an organosolv pretreatment using as a solvent the crude glycerin resulting from the production of biodiesel, to promote the delignification of biomass, in addition to an efficient fractioning and generation of bioproducts of interest. The experiments were performed in batch reactors varying temperature, crude glycerin/water concentration, and reaction time. At the end of each experiment, the pretreated biomass, and a liquid phase (black liquor) containing the solubilized organosolv lignin were obtained. The biomasses "in nature" and pretreated were chemically characterized to evaluate the pretreatment efficiency, and the lignin was recovered from the black liquor quantified and characterized. As a result, high rates of biomass delignification were obtained after pretreatment, reaching a maximum content of 83.09%. In the recovery of lignin, a maximum of 11.25 g of lignin/100 g of biomass was reached, lignin that presented similar chemical characteristics with commercial lignin. Considering the satisfactory results obtained, the use of by-products (forestry residues and crude glycerin) can help to make the process viable, besides generating interesting bioproducts to the market and being able to be integrated with biorefineries. Proceedings of the 30th European Biomass Conference and Exhibition, 9-12 May 2022, Online, pp. 936-939 |
| Databáze: | OpenAIRE |
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