An overview on progress, advances, and future outlook for biohydrogen production technology

The hydrogen (H2) economy has been recognized globally from a socio-economic, and environmental viewpoint. Hydrogen can be produced using technologies such as elec-trolysis, thermochemical, photoelectrochemical, and biological methods. Biological methods help in waste management and energy production simultaneously. To make the biohydrogen process economic and viable at a commercial scale there is a need to utilize renewable raw materials efficiently. Improved reactor designs and advanced genetic im-provements using metabolic pathways developments are mandated to improve microbial adaptation to the harsh process conditions. Finally, this review aimed to fill the void among technical and applied research and review the current advances in genetic engineering and metabolic pathway developments to improve H2 productivity. (c) 2022 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.

Automated summary

The hydrogen economy has gained global recognition for its socio-economic and environmental benefits. Hydrogen can be produced through various methods, including biological processes that contribute to waste management and energy production. To make biohydrogen production commercially viable, efficient utilization of renewable resources, improved reactor designs, and advanced genetic engineering are essential for enhancing microbial adaptation and productivity.