TY - JOUR AU - Nakhjiri, Ali Taghvaie AU - Heydarinasab, Amir PY - 2020/01/01 Y2 - 2024/03/29 TI - CFD Analysis of CO2 Sequestration Applying Different Absorbents Inside the Microporous PVDF Hollow Fiber Membrane Contactor JF - Periodica Polytechnica Chemical Engineering JA - Period. Polytech. Chem. Eng. VL - 64 IS - 1 SE - DO - 10.3311/PPch.13172 UR - https://pp.bme.hu/ch/article/view/13172 SP - 135-145 AB - <p>The sequestration process of greenhouse contaminants such as CO<sub>2</sub> via hollow fiber membrane contactor (HFMC) is regarded as a promising technology to manage the deleterious impressions of CO<sub>2</sub> on environment such as global warming and air pollution. This investigational paper renders a wide-ranging 2D simulation in order to assess the removal performance of CO<sub>2</sub> from CO<sub>2</sub>/CH<sub>4</sub> gaseous stream (containing 80 % CH4 and 20 % CO<sub>2</sub>) in the HFMC. As the novelty, the evaluation of CO2 acid gas removal from gaseous mixture applying four novel absorbing agents (potassium threonate (PT), piperazine (PZ), pure water (H<sub>2</sub>O) and methyldiethanolamine (MDEA)) is implemented in the HFMC with the aim of introducing a more efficient liquid absorbent for CO<sub>2</sub> sequestration. Model validation is done based on the comparison of mathematical model outcomes and experimental data in a wide range of H2O velocity and confirms a desirable agreement with an average relative deviation (ARD) of approximately 3 % for CO<sub>2</sub> flux. It is perceived from the results that PZ is introduced as the most efficient liquid absorbent for CO2 sequestration and MDEA, PT and H<sub>2</sub>O are in the next category (100 % removal using PZ > 96 % removal using MDEA > 89 % removal using PT > 57 % removal using H<sub>2</sub>O). The results corroborate that increase in membrane tortuosity and gas velocity negatively affects the sequestration process while increment of module length and porosity improve the separation of CO<sub>2</sub>.</p> ER -