Department of Civil and Environmental Engineering, KAIST, 373-1 Guseong-dong, Yuseong-gu, Daejeon 305-701, Republic of Korea.
Chemosphere. 2011 Oct;85(4):672-6. doi: 10.1016/j.chemosphere.2011.06.072. Epub 2011 Jul 12.
In an effort to improve the efficiency and sustainability of microbial fuel cell (MFC) technology, a novel MFC reactor, the M2FC, was constructed by combining a ferric-based MFC with a ferrous-based fuel cell (FC). In this M2FC reactor, ferric ion, the catholyte in the MFC component, is regenerated by the FC system with the generation of additional electricity. When the MFC component was operated separately, the electricity generation was maintained for only 98 h due to the depletion of ferric ion in the catholyte. In combination with the fuel cell, however, the production of power was sustained because ferric ion was continually replenished from ferrous ion in the FC component. Moreover, the regeneration process of ferric ion by the FC produced additional energy. The M2FC reactor yielded a power density of up to 2 W m(-2) (or time-averaged value of approximately 650 mW m(-2)), density up to 20 times (or approximately six times based on time-averaged value) higher than the corresponding MFC system.
为了提高微生物燃料电池（MFC）技术的效率和可持续性，通过将基于铁的 MFC 与基于亚铁的燃料电池（FC）结合，构建了一种新型的 M2FC 反应器。在这种 M2FC 反应器中，FC 系统会使 MFC 组件中的阴极液中的铁离子再生，同时产生额外的电能。当单独运行 MFC 组件时，由于阴极液中铁离子的耗尽，发电仅能维持 98 小时。然而，与燃料电池结合后，由于 FC 组件中的亚铁离子不断补充铁离子，因此电力生产得以持续。此外，FC 对铁离子的再生过程产生了额外的能量。M2FC 反应器的功率密度高达 2 W m(-2)（或时间平均值约为 650 mW m(-2)），比相应的 MFC 系统高 20 倍（或时间平均值约为 6 倍）。
