Department of Architecture, Civil Engineering and Industrial Management Engineering, Nagoya Institute of Technology (Nitech), Nagoya, Japan.
Department of Architecture, Civil Engineering and Industrial Management Engineering, Nagoya Institute of Technology (Nitech), Nagoya, Japan.
Bioelectrochemistry. 2021 Aug;140:107821. doi: 10.1016/j.bioelechem.2021.107821. Epub 2021 Apr 20.
Hydrodynamics has received considerable attention for application in improving microbial fuel cell (MFC) performance. In this study, a method is proposed to calculate the effect of fluid flow on MFC current production from sewage wastewater. First, the effect of flow velocity in an up-flow channel was evaluated, where an air-core MFC was polarized with external resistance (R). When tested at a flow velocity ranging from 0 to 20 cm s, the MFC with the higher flow velocity produced more current. In sewage wastewater with a chemical oxygen demand (COD) of 76 mg L, the MFC polarized with 3 Ω of R, and a flow velocity of 20 cm s had 5.4 times more current than the MFC operating in a no-flow environment. This magnitude decreased with higher R and COD values. The Michaelis-Menten equation, modified herein by integrating COD and flow velocity, demonstrated the production of current by MFC operating under different conditions of flow. Calculation of current by MFC in a virtual fluid suggested that the flow surrounding the MFC varied with the configuration and affected the current production.
水动力学在提高微生物燃料电池 (MFC) 性能方面受到了广泛关注。在本研究中，提出了一种方法来计算流体流动对从污水中产生 MFC 电流的影响。首先，评估了上流通道中流速的影响，其中采用外部电阻 (R) 对空气芯 MFC 进行极化。当在 0 至 20 cm s 的流速范围内进行测试时，流速较高的 MFC 产生更多的电流。在 COD 为 76 mg L 的污水中，R 为 3 Ω，流速为 20 cm s 的 MFC 的电流是在无流动环境中运行的 MFC 的 5.4 倍。该幅度随更高的 R 和 COD 值而降低。通过将 COD 和流速集成，对本文修改后的米氏方程证明了在不同流动条件下 MFC 产生电流的情况。在虚拟流体中计算 MFC 的电流表明，MFC 周围的流动随配置而变化，并影响电流的产生。
