 Microalgal biomass has been identified as a promising source of renewable energy due to its high oil content and rapid growth rate. Hydrogen can be produced from microalgal biomass using two main methods, photobiological hydrogen production and biochemical hydrogen production. Photobiological hydrogen production involves exposure of microalgal cells to light, while biochemical hydrogen production involves enzymatic or chemical catalysis. Both methods have their advantages and disadvantages, with photobiological hydrogen production being more efficient but requiring expensive equipment, while biochemical hydrogen production is less efficient but requires fewer resources. Additionally, algae can be grown in open ponds or photobioreactors, making it easier to scale up production.