The research aim of this project is to develop a Vacuum Swing Adsorption(VSA) process to capture CO₂from a SMR-H₂ plant in the refining process. For post-combustion capture, the amine process is, to date, closest to commercialisation and ready to be deployed, but a cyclic adsorption process can be more energy-efficient than the amine process in this particular case due to the higher CO₂ fraction in the feed. The research will focus on finding an optimal configuration for a CO₂ VSA process using a commercially available adsorbent. The target is to achieve 90+% CO₂ recovery with 95+% purity from the H₂ PSA off-gas. A lab-scale multi-column VSA rig will be constructed in the adsorption labs at Edinburgh to demonstrate that the target is achievable with a well-designed cyclic adsorption process. The design and optimisation of the VSA process will be facilitated by a proper simulation work integrated with an optimiser. An overall process design of an example H₂ plant integrated with the VSA process will be implemented for the purpose of optimising its steam network.