Modeling of a bubble column for CO2 removal by absorption with NaOH



: Michelson Johan, Mäki-Arvela Päivi, Rajala Pasi, Hallapuro Markus, Schmid Daniel, Karlström Oskar, Wärnå Johan, Murzin Dmitry Yu

Publisher: TAYLOR & FRANCIS INC

: 2023

: Chemical Engineering Communications

: CHEMICAL ENGINEERING COMMUNICATIONS

: CHEM ENG COMMUN

: 11

: 0098-6445

: 1563-5201

DOI: https://doi.org/10.1080/00986445.2023.2261105

: https://doi.org/10.1080/00986445.2023.2261105

: https://research.utu.fi/converis/portal/detail/Publication/181454404


CO2 capture experiments were carried out in a small-scale bubble column reactor using alkaline solutions of sodium hydroxide. The results of the experiments show that a higher NaOH content in the liquid phase and elevated CO2 concentrations in the gas mixture led to a higher CO2 removal efficiency. A mathematical model was developed to describe the CO2 absorption as a function of CO2 gas inlet and OH- concentrations at low CO2 and OH- concentrations. The CO2 uptake at high OH- concentrations (high pH) was accurately predicted by the model, whereas the CO2 uptake at lower OH- concentrations could not be predicted with the same accuracy.

Last updated on 2024-26-11 at 23:41