Center for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, Sydney, NSW 2007, Australia.
Center for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, Sydney, NSW 2007, Australia; Institute of Environmental Sciences, Nguyen Tat Thanh University, Ho Chi Minh City, Viet Nam.
Bioresour Technol. 2022 Feb;346:126588. doi: 10.1016/j.biortech.2021.126588. Epub 2021 Dec 18.
Microbial electrolysis cell (MEC) system is an environmentally friendly method for clean biohydrogen production from a wide range of biowastes owing to low greenhouse gas emissions. This approach has relatively higher yields and lower energy costs for biohydrogen production compared to conventional biological technologies and direct water electrolysis, respectively. However, biohydrogen production efficiency and operating costs of MEC still need further optimization to realize its large-scale application.This paper provides a unique review of impact factors influencing biohydrogen production in MECs, such as microorganisms and electrodes. Novel strategies, including inhibition of methanogens, development of novel cathode catalyst, advanced reactor design and integrated systems, to enhance low-cost biohydrogen production, are discussed based on recent publications in terms of their opportunities, bottlenecks and future directions. In addition, the current challenges, and effective future perspectives towards the practical application of MECs are described in this review.
微生物电解池（MEC）系统是一种环保的方法，可从各种生物废物中清洁地生产生物氢气，因为其温室气体排放量低。与传统的生物技术和直接水电解相比，该方法在生物氢气生产方面具有相对较高的产量和较低的能源成本。然而，MEC 的生物氢气生产效率和运营成本仍需要进一步优化，以实现其大规模应用。
本文对影响 MEC 中生物氢气生产的因素进行了独特的综述，例如微生物和电极。根据最近的出版物，讨论了一些提高低成本生物氢气生产的新策略，包括抑制产甲烷菌、开发新型阴极催化剂、先进的反应器设计和集成系统，讨论了它们的机会、瓶颈和未来方向。此外，本文还描述了 MEC 实际应用的当前挑战和有效未来展望。
