Removal of naphthenic acids using activated charcoal: Kinetic and equilibrium studies
| Autor: | Joan Manuel Rodríguez-Díaz, C. M. B. M. Barbosa, Marta Mmb Duarte, Natália Ferreira Campos |
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| Rok vydání: | 2018 |
| Předmět: |
Chemistry
General Chemical Engineering lcsh:QD450-801 lcsh:Physical and theoretical chemistry 02 engineering and technology Surfaces and Interfaces General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences chemistry.chemical_compound Adsorption Activated charcoal Aviation kerosene Naphthenic acid 0210 nano-technology Nuclear chemistry |
| Zdroj: | Adsorption Science & Technology, Vol 36 (2018) |
| ISSN: | 2048-4038 0263-6174 |
| DOI: | 10.1177/0263617418773844 |
| Popis: | This study proposes the use of activated charcoal made from Umbaúba wood as an adsorbent for the removal of naphthenic acid in an aviation kerosene model mixture. The activated charcoal was characterised as mesoporous with a carbon graphite profile and presented pHpzcequal to 10.5. The best working conditions were obtained for activated charcoal levels of −1. The system reached the equilibrium after 360 min, without significant statistical difference for the pseudo-first- and pseudo-second-order kinetic models. The Weber–Morris and Boyd models corroborated the conclusion that adsorption is not controlled only by the intraparticle diffusion step. For the equilibrium study, the adsorptive capacity obtained was of 1.1 g g−1, with the Brunauer–Emmett–Teller model better correlating with the experimental data. Given the results obtained, the activated charcoal demonstrated to have a remarkable potential for removing naphthenic acid in an aviation kerosene model mixture. |
| Databáze: | OpenAIRE |
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