Extraction of phenolic compounds from sulfur-free black liquor thanks to hydrothermal treatment before the production of syngas for biofuels
| Autor: | Geert Haarlemmer, Christine Chirat, Anne Roubaud, Hélène Curmi, Marine Peyrot, Dominique Lachenal |
|---|---|
| Rok vydání: | 2022 |
| Předmět: |
020209 energy
General Chemical Engineering Pulp (paper) Batch reactor Syringol 02 engineering and technology engineering.material Raw material 021001 nanoscience & nanotechnology Condensed Matter Physics Pulp and paper industry 7. Clean energy chemistry.chemical_compound chemistry Biofuel 0202 electrical engineering electronic engineering information engineering engineering Lignin Physical and Theoretical Chemistry 0210 nano-technology Black liquor Syngas |
| Zdroj: | The Journal of Supercritical Fluids. 181:105489 |
| ISSN: | 0896-8446 |
| DOI: | 10.1016/j.supflu.2021.105489 |
| Popis: | Nowadays, black liquor, the liquid residue from cooking step in pulp industry is burnt to produce energy for the plant. But as the pulp mills have energy in excess, higher added values applications for black liquor may be looked for. Hydrothermal treatment offers a good opportunity as it is well suited for this kind of wet feedstock. It may be used to depolymerize organic compounds or produce syngas for biofuels applications. The objective of this study is to combine phenols and biofuel production by extracting the small organic molecules formed at moderate temperature prior to complete gasification of black liquor. Hydrothermal experiments from 225 °C to 600 °C have been performed on sulfur-free black liquor in batch reactor. At 280 °C phenol, guaiacol and syringol were found in their highest quantity: 5% of the initial lignin (which represented 6 wt% of the liquid black liquor) could be converted into these three compounds. |
| Databáze: | OpenAIRE |
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