Capturing renewable isobutanol from model vapor mixtures using an all-silica beta zeolite
| Autor: | Susana Valencia, Fernando Rey, Gille R. Wittevrongel, Benjamin Claessens, Julien Cousin-Saint-Remi, Gino Baron, Joeri Denayer |
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| Přispěvatelé: | Faculty of Engineering, Chemical Engineering and Separation Science, Department of Bio-engineering Sciences, Chemical Engineering and Industrial Chemistry, Centre for Molecular Separation Science & Technology, Vriendenkring VUB |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
General Chemical Engineering
Evaporation Fraction (chemistry) 02 engineering and technology 010402 general chemistry 01 natural sciences Industrial and Manufacturing Engineering law.invention chemistry.chemical_compound Adsorption law Mass transfer Zeolite beta Environmental Chemistry Zeolite Distillation Downstream processing Chemistry Isobutanol Bio-isobutanol General Chemistry 021001 nanoscience & nanotechnology 0104 chemical sciences Gas-stripping Chemical engineering Fermentation 0210 nano-technology |
| Zdroj: | Digital.CSIC. Repositorio Institucional del CSIC instname RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia |
| Popis: | [EN] Isobutanol is a promising renewable platform chemical, produced via fermentation. In the conventional downstream processing, isobutanol is recovered from the fermentation broth via evaporation or gas-stripping, followed by purification via distillation. Alternatively, an adsorptive separation can be used to recover isobutanol from the generated vapor mixture, however this has remained unexplored in the literature. In this work, we investigate the use of a hydrophobic all-silica beta zeolite (Si-BEA) to recover isobutanol from model vapor mixtures via adsorption. The Si-BEA zeolite shows a high selectivity for isobutanol over water (? = 35) and ethanol (? = 10) and excellent mass transfer properties under dynamic conditions. Sharp isobutanol breakthrough profiles were obtained, leading to a fraction of unused bed of only 6% at a gas residence time of only 0.6 s. The adsorbed isobutanol could be fully desorbed via thermal regeneration and an isothermal purge allows to remove co-adsorbed ethanol and water. The results of this work thus show the promising properties of Si-BEA for the recovery of renewable isobutanol from vapor mixtures. Julien Cousin-Saint-Remi is grateful to the FWO for financial support (grant number 12P2217N and 1512118N). |
| Databáze: | OpenAIRE |
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