B. Senthil Rathi, R. Sivaranjanee, P. Senthil Kumar, S. Sabarigirish, A. Lewin Pranson, S. Murugeshwari, Gayathri Rangasamy
Hydrogen energy systems have emerged as some of the most promising solutions, potentially benefiting the environment and significantly advancing sustainability. Hydrogen is consistently utilized across petrochemical, chemical, and power sectors. While the predominant methods for hydrogen production involve thermal cracking or steam reforming of natural gas or petroleum components, efforts are underway to develop efficient techniques for generating hydrogen from sustainable and renewable sources such as waste products. This study explored different hydrogen production processes, with an emphasis on dark fermentation. Many nations are now promoting the adoption of alternative renewable energy sources, and several are actively exploring the potential of hydrogen as an alternative fuel for power systems. An interesting alternative is the use of biological processes such as dark fermentation to produce hydrogen. Further investigation into bacterial culture and potential interactions, as well as the use of suitable substrates and methods, such as solid-state fermentation and hydrogen purification, to combine dark fermentation with other procedures is necessary to maximize the energetic efficiency of dark fermentation. By consolidating the current knowledge and identifying potential research avenues, this study aims to contribute to the development and implementation of this sustainable technology, paving the way for a more resilient and environmentally friendly energy system.