Worldwide concern for clean energy, environmental protection, and global warming has given rise to the rapid search for alternative energy sources. Hydrogen as an alternative energy for the future is considered in high regard due to its efficiency as well as its sustainability. This new book presents up-to-date information on solutions for the production of biohydrogen from renewable sources for clean fuel, waste management, waste valorization, reduced greenhouse gas emissions, and climate change mitigation. It provides an overview of the prospects and challenges faced in biohydrogen production while also considering environmental issues and economic aspects.