Thermodynamics and Kinetics of CO2 Adsorption on Nanoporous Wv1050 Activated Carbon at 20°c and Pressures Up to 35 Bar
Year: 2025
Type: article
Abstract: Thermodynamic and kinetic investigations are essential to understanding the mechanisms involved in adsorbent-adsorbate interaction and evaluating adsorption capacity and time to achieve separation. In this study, the adsorption equilibrium isotherm and the adsorption kinetics of pure CO2 on WV1050, a granular commercial activated carbon, were investigated experimentally in a gas sorption analyzer coupled with a magnetic suspension at 20 °C and pressures up to 35 bar. Using a volumetric apparatus, the adsorption equilibrium isotherm determined agrees with previously measured isotherm data. The adsorption kinetics was modeled using the experimental equilibrium data measured and GNU Octave software for pseudo-first order, pseudo-second order, and Avrami models. The best results were provided by the Avrami model, which usually presents a time-dependent adsorption rate coefficient. Further studies are underway to use this model in the simulation and design of the gas adsorption bed.
DOI: 10.3303/cet25118047
Authors: Ana L.N. Santos, Deborah C. Silva, Ladislane S. Bastos, Fabio P. Nascimento, Reinaldo C. Mirre, Karen V. Pontes, Silvio A.B Vieira de Melo
Language: English
Subfield: Mechanical Engineering
Field: Engineering
Domain: Physical Sciences
SDG: Climate action
Open Access status: gold
Estimated APC paid: $545
OpenAlex ID: W7092228851
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