Algae is considered as a promising third-generation biofuel feedstock. Macroalgae is an efficient source of biomass for biohydrogen production. Biohydrogen (H₂) is believed as a sustainable and clean energy carrier with high-energy yield. The pretreatment is essential to enhance the hydrolytic process during dark fermentation. During pretreatment, some inhibitory substances are formed and are controlled by detoxification techniques. This review briefly covers the marine macroalgal species, pretreatment methods for biohydrogen production, and inhibitory components formed during the pretreatment. Lastly, this review suggests the techno economic assessment about life cycle, energy, and economic feasibility in biohydrogen production from macroalgae.

藻类被认为是有前途的第三代生物燃料原料。大型藻类是生产生物氢的有效生物质来源。生物氢（H ₂）被认为是一种可持续的清洁能源载体，具有高能量产率。预处理对于增强深色发酵过程中的水解过程至关重要。在预处理过程中，会形成一些抑制性物质，并通过排毒技术对其进行控制。这篇综述简要介绍了海洋大型藻类物种，生产生物氢的预处理方法以及在预处理过程中形成的抑制性成分。最后，这篇综述提出了有关大型藻类生物氢生产中的生命周期，能源和经济可行性的技术经济评估。