RENEWABLE ACTIVATED CARBON PERFORMANCE FOR CO2 ADSORPTION WITH TEMPERATURE DEPENDENCY

Adsorption is a promising technology since CO₂ capture and separation are focused on mitigating climate change caused by carbon dioxide emissions. An intrinsic step of the Brazilian oil and gas industry is the offshore CO₂ separation from pre-salt associated gas streams. This work evaluates CO₂ adsorption in an activated carbon made from renewable sources. The experiments were carried out in a gravimetric sorption analyzer with a magnetic suspension balance at 293, 328, and 363 K in a pressure range from 0 to 35 bar. Considering the temperature-dependent equations, the Langmuir isotherm model was suitable for the experimental data. The parameter estimation and the good fit obtained allow the reliable and accurate use of this model in simulation.