Ali Ranjbar

With the increasing demand for energy and global changes, renewable energy sources like electricity are gaining attention. Methane, a primary gaseous fuel, is an attractive option for balancing electricity production and consumption. Methane can be produced from hydrogen and carbon dioxide, presenting a sustainable energy solution. Injecting carbon dioxide underground for environmental protection and storing hydrogen as a clean energy source highlight methane from this process as a green energy source. Understanding the underground environment's performance in this process is vital. This review focuses on the injection of hydrogen and carbon dioxide into aquifer reservoirs and explores the biogenic methane production by microorganisms during the methane generation process.