Hydrogen energy plays a vital role in sustainable development, with the demand for efficient hydrogen purification technologies increasing. Utilizing existing natural gas pipeline networks for H2/NG co-transportation presents opportunities for separating gas mixtures to obtain high purity hydrogen and/or natural gas for various applications. Conventional adsorbents like activated carbon and metal-organic frameworks have limitations in selectively capturing hydrogen due to its weaker adsorption compared to methane. The emergence of metal hydrides, categorized as binary, complex, and intermetallic hydrides, offers a promising solution for effective hydrogen capture. Among these, LaNi5H6 shows remarkable potential with a large hydrogen capacity, surpassing conventional adsorbents like zeolite 3A. Research focuses on optimizing metal hydrides' properties to improve reaction kinetics and efficiency. Utilizing metal alloys like LaNi5 in pressure swing adsorption processes demonstrates high hydrogen recovery rates and energy efficiency. Multi-column PSA is highlighted as a viable approach for large-scale industrial hydrogen purification. Overall, the study aims to develop an efficient separation process for purifying low-grade hydrogen from mixed gas streams, emphasizing the importance of innovative solutions in advancing sustainable energy practices.