Dr. Ali NabaviSAQER MOHAMMED ABDULLAH ALHAJRI2022-05-262022-05-26https://drepo.sdl.edu.sa/handle/20.500.14154/30845Concerning the current global warming, the amount of greenhouse gas has been increased over the last decades. Therefore, Hydrogen production is a promising technology that can produce clean and sustainable energy in the future to reduce the carbon dioxide (CO2) emissions in the heat and power plants. Due to the potential of hydrogen production, It is critical to invest some effort in developing this technology in many areas. One of the challenges related to this technology is the hydrogen purification. Pressure swing adsorption (PSA) has been investigated in this study, focusing the material screen aspects on determining the most suitable adsorbent. This study conducted a material screening and developed a dynamic simulation model to evaluate the performance of selected sorbents in the pressure swing adsorption (PSA) process for low-carbon hydrogen production. Material screening of adsorbents concluded on three different classes of materials, metal-organic frameworks (MOF), activated carbons (AC), and zeolites. Eight adsorbents were examined, which are UiO-67(Zr), UiO-66(Zr)-Br, Zr-Cl2AzoCDB, Cu-BTC, UTSA-16, Zeolite 13X, Zeolite 5A. In addition, the materials were gathered from the literature review were examined for designing the PSA unit. The Aspen Adsorption package was used to conduct a dynamic simulation of a four-bed PSA unit that produced 99.9% hydrogen purity to meet industrial fuel specifications. For the adsorbents comparative, the MOF adsorbent, UiO-67(Zr), was the most suitable sorbent according to its performance along with the PSA unit. The results showed that it had the highest hydrogen recovery with 81.6%, productivity with 423 mol.H2/kg.ads/Day, carbon dioxide purity in the tail gas with 78.8%, and energy consumption 12.9 MJ/kg.H2, considered the lowest along the other sorbent. For the sensitivity analysis, changing feed composition from 61% of hydrogen to 95% reduced the CO2 purity in the tail from 78.8% to 31%. Also, the pressure variation from 30 to 35 was the highest negative effect of CO2 purity.en