Fuel Cell Institute, Universiti Kebangsaan Malaysia, 43600, Bangi, Selangor, Malaysia.
Department of Chemical and Process Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, 43600, Bangi, Selangor, Malaysia.
Bioprocess Biosyst Eng. 2020 Aug;43(8):1369-1379. doi: 10.1007/s00449-020-02331-7. Epub 2020 Mar 19.
A conventional reactor in microbial electrochemical technology (MET) consists of anode and cathode compartments divided by a separator, which is usually a proton exchange membrane (PEM), such as Nafion 117. In this study, a novel porous clay earthenware (NCE) was fabricated as the separator to replace the highly cost PEM. The fabrication of NCEs is with raw clay powder and starch powder that acts as a pore-forming agent at different starch powder contents (10 vol%, 20 vol%, and 30 vol%), ball-milled before hydraulically pressed to form green ceramic pellets and sintered up to 1200 °C. The highest power density of 2250 ± 21 mW/m (6.0 A/m), the internal resistance of 75 ± 24 Ω and coulombic efficiency (CE) of 44 ± 21% were produced for MFC-NCE from 30 vol% starch powder content under batch mode operation. The MFC-PEM combination produced the lowest power density, CE and the highest internal resistance up to 1350 ± 17 mW/m (3.0 A/m), 23 ± 15% and 326 ± 13 Ω, respectively.
在微生物电化学技术 (MET) 中，传统的反应器由阳极室和阴极室组成，它们由一个分隔物隔开，通常是质子交换膜 (PEM)，例如 Nafion 117。在这项研究中，一种新型多孔粘土陶瓷 (NCE) 被制造出来作为分隔物来替代高成本的 PEM。NCE 的制造是使用原始的粘土粉末和淀粉粉末作为造孔剂，在不同的淀粉粉末含量（10 体积%、20 体积%和 30 体积%）下，先球磨，然后液压成型制成绿色陶瓷颗粒，再烧结至 1200°C。在分批操作下，对于淀粉粉末含量为 30 体积%的 MFC-NCE，产生了最高的功率密度 2250±21 mW/m（6.0 A/m），内部电阻 75±24 Ω 和库仑效率 (CE) 44±21%。MFC-PEM 组合产生了最低的功率密度、CE 和最高的内部电阻，分别达到 1350±17 mW/m（3.0 A/m）、23±15%和 326±13 Ω。
