Department of Chemical Engineering, College of Engineering, Qatar University, P O Box 2713 Doha, Qatar.
Department of Chemical Engineering, College of Engineering, Qatar University, P O Box 2713 Doha, Qatar.
Bioresour Technol. 2018 Apr;253:16-21. doi: 10.1016/j.biortech.2018.01.005. Epub 2018 Jan 3.
Electrochemically active anodic biofilm that has adapted under mild applied potentials in the range 100-500 mV was evaluated for its improved bioelectrogenesis and bioelectrochemical treatment of petroleum refinery wastewater (PRW) in a single chamber air cathode microbial fuel cell (MFC). MFC operation with 500 mV as supplemental voltage has exhibited a maximum power density of 132 mW/m, which was three times higher than control MFC (45 mW/m). Similarly, highest substrate removal efficiency (48%) was also obtained with the MFC of 500 mV, followed by 300 mV (37%), 100 mV (32%) and control (27%). Adaptation under applied potential conditions also exhibited enhanced degradation efficiency of diesel range organics (DROs)/straight chain-alkanes. The strategy efficiently reduced DROs with the maximum efficiency of 89% (500 mV), which is almost 50% higher than that of the control system (59%), demonstrating the effectiveness of using supplemented voltage in treating PRW.
在 100-500 mV 的温和施加电位下适应的电化学活性阳极生物膜，用于评估其在单室空气阴极微生物燃料电池 (MFC) 中改善生物发电和石油炼制废水 (PRW) 的生物电化学处理的性能。以 500 mV 作为补充电压的 MFC 运行表现出 132 mW/m 的最大功率密度，比对照 MFC（45 mW/m）高三倍。同样，具有 500 mV 的 MFC 获得了最高的基质去除效率（48%），其次是 300 mV（37%）、100 mV（32%）和对照（27%）。施加电位条件下的适应还表现出增强的柴油范围有机物 (DROs)/直链烷烃的降解效率。该策略有效地降低了 DROs，最大效率为 89%（500 mV），比对照系统（59%）高出近 50%，证明了在处理 PRW 中使用补充电压的有效性。
