Hydrogen Separation and Purification Techniques in Pyrolysis-Based Processes

The production of hydrogen via pyrolysis process has gained a significant attention due to its capacity to offer reliable and sustainable as well as efficient techniques for hydrogen energy generation. Despite these benefits, there are challenges with its purification and separation which represent a major procedure during its production. This study focused on the current methods deployed in hydrogen production with emphasis on its separation and purification during pyrolysis-based process. These methods include pressure swing adsorption, membrane filtration and cryogenic separation techniques. Each of the methods, principles of operation as well as it relates to the pyrolysis gas composition were discussed. Their advantages, limitations and the desired purity of hydrogen produced were inclusive during the discussion. Findings showed that despite the significance of these technologies, research is still needed to achieve a more cost effective, scalable and energy efficient methods for the production of hydrogen especially in the areas of purification and separation.