Biocatalysts in Biohydrogen Production

The reliance on fossil fuels has not only led to large-scale industrial development but also significant depletion of natural resources and negative effects on climate. Recently, renewable sources have been used for biohydrogen (H2) production as a clean bioenergy. A variety of biological routes were developed to produce biohydrogen production. This chapter aims to discuss biocatalysts to produce biohydrogen. Here, an attempt was made to discuss various catalysts for biohydrogen production. Moreover, an effort was made to discuss diverse microbes as biocatalysts for biohydrogen production. Also, the pretreatment of biocatalysts for biohydrogen production is highlighted. Furthermore, immobilized biocatalysts were elaborated for biohydrogen production. Finally, conclusions and future recommendations were emphasized for biohydrogen production using biocatalysts.