Ulrich Legrand, Pierre-Luc Girard-Lauriault, Jean-Luc Meunier, Richard Boudreault et Jason Robert Tavares
Article de revue (2022)
|
Libre accès au plein texte de ce document Version finale avant publication Conditions d'utilisation: Tous droits réservés Télécharger (1MB) |
Abstract
The kinetics of water adsorption in powder sorbent layers are important to design a scaled-up atmospheric water capture device. Herein, the adsorption kinetics of three sorbents, a chromium (Cr)-based metal–organic framework (Cr-MIL-101), a carbon-based material (nanoporous sponges/NPS), and silica gel, have been tested experimentally, using powder layers ranging from ∼0 to 7.5 mm in thickness, in a custom-made calibrated environmental chamber cycling from 5 to 95% RH at 30 °C. A mass and energy transfer model was applied onto the experimental curves to better understand the contribution of key parameters (maximum water uptake, kinetics of single particles, layer open porosity, and particle size distribution). Open porosity (i.e., the void-to-particle ratio in the sorbent layer) shows the highest influence to improve the kinetics. Converting the sorbent kinetics data into a daily yield of captured water demonstrated (i) the existence of an optimal open porosity for each sorbent, (ii) that thinner layers with moderate open porosity performed respectively better than thicker layers with high open porosity, and (iii) that high maximum water uptake and fast single-particle kinetics are not necessarily predictive of high daily water yield.
Mots clés
kinetics, water capture, sorbents, open porosity, diffusion model
Sujet(s): | 1800 Génie chimique > 1800 Génie chimique |
---|---|
Département: | Département de génie chimique |
Centre de recherche: | CREPEC - Centre de recherche sur les systèmes polymères et composites à haute performance |
Organismes subventionnaires: | Natural Sciences and Engineering Research Council of Canada (NSERC), Prima, Mitacs, Awn Nanotech Inc. |
Numéro de subvention: | CRDPJ 522391-17, IT16469 |
URL de PolyPublie: | https://publications.polymtl.ca/50426/ |
Titre de la revue: | Langmuir (vol. 38, no 8) |
Maison d'édition: | American Chemical Society |
DOI: | 10.1021/acs.langmuir.1c03364 |
URL officielle: | https://doi.org/10.1021/acs.langmuir.1c03364 |
Date du dépôt: | 18 avr. 2023 14:58 |
Dernière modification: | 05 avr. 2024 15:14 |
Citer en APA 7: | Legrand, U., Girard-Lauriault, P.-L., Meunier, J.-L., Boudreault, R., & Tavares, J. R. (2022). Experimental and theoretical assessment of water sorbent kinetics. Langmuir, 38(8), 2651-2659. https://doi.org/10.1021/acs.langmuir.1c03364 |
---|---|
Statistiques
Total des téléchargements à partir de PolyPublie
Téléchargements par année
Provenance des téléchargements
Dimensions