Recently, there has been a surge of interest in producing blue hydrogen using the natural gas reforming process combined with carbon capture, primarily motivated by concerns about climate change. The employed carbon dioxide separation technology in blue hydrogen production aims to efficiently isolate carbon dioxide from the gas mixture released during the hydrogen reformer furnace operation. As part of our ongoing research, we are exploring a state-of-the-art membrane process to achieve high-purity separation of carbon dioxide. During the initial phase of our study, we successfully developed the lab-scale multi-stage membrane processes to obtain exceptionally pure carbon dioxide. To test the membrane process, we used simulated binary and ternary mixtures of carbon-containing gases. For this study, we employed commercially available membrane modules, which demonstrate remarkable selectivity at low temperatures, in addition to efficient operating parameters, including pressure, flow rate, and stage cut. Our experimental results were impressive, as we demonstrated that the membrane process can capture 90% or more of high-purity carbon dioxide. At present, the membrane capture system is being implemented at a hydrogen bus charging station in the vibrant city of Daejeon, South Korea.