Wang Yi-Ta, Wang Ruei-Shiang
Department of Mechanical and Electro-Mechanical Engineering, National Ilan University, Yilan 26047, Taiwan.
Materials (Basel). 2017 Feb 13;10(2):169. doi: 10.3390/ma10020169.
Bio-electro-Fenton microbial fuel cells generate energy through the decomposition of organic matter by microorganisms. The generated electricity drives a Fenton reaction in a cathode chamber, which can be used for the decolorization of dye wastewater. Most of the previous works added expensive platinum catalyst to improve the electrical property of the system. In this research, aligned carbon nanotubes (CNTs) were generated on the surface of SS316 stainless steel by chemical vapor deposition, and an iron phthalocyanine (FePc) catalyst was added to fabricate a compound (FePc/CNT/SS316) that was applied to the cathode electrode of the fuel cell system. This was expected to improve the overall electricity generation efficiency and extent of decolorization of the system. The results showed that the maximum current density of the system with the modified electrode was 3206.30 mA/m², and the maximum power was 726.55 mW/m², which were increased by 937 and 2594 times, respectively, compared to the current and power densities of a system where only the SS316 stainless steel electrode was used. In addition, the decolorization of RB5 dye reached 84.6% within 12 h. Measurements of the electrical properties of bio-electro-Fenton microbial fuel cells and dye decolorization experiments with the FePc/CNT/SS316 electrode showed good results.
生物电芬顿微生物燃料电池通过微生物分解有机物来产生能量。所产生的电能驱动阴极室中的芬顿反应，该反应可用于染料废水的脱色。之前的大多数研究都添加了昂贵的铂催化剂来改善系统的电学性能。在本研究中，通过化学气相沉积在SS316不锈钢表面生成了排列有序的碳纳米管（CNTs），并添加了铁酞菁（FePc）催化剂来制备一种化合物（FePc/CNT/SS316），将其应用于燃料电池系统的阴极电极。这有望提高系统的整体发电效率和脱色程度。结果表明，使用改性电极的系统的最大电流密度为3206.30 mA/m²，最大功率为726.55 mW/m²，与仅使用SS316不锈钢电极的系统的电流密度和功率密度相比，分别提高了937倍和2594倍。此外，RB5染料在12小时内的脱色率达到了84.6%。对生物电芬顿微生物燃料电池的电学性能测量以及使用FePc/CNT/SS316电极进行的染料脱色实验均显示出良好的结果。
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