Chemical Engineering Department, University of León, IRENA-ESTIA, Avda. de Portugal 41, León 24009, Spain.
Bioresour Technol. 2013 Feb;130:584-91. doi: 10.1016/j.biortech.2012.12.062. Epub 2012 Dec 20.
This study demonstrates microbial electrolysis cell (MEC) scale-up from a 50mL to a 10L cell. Initially, a 50mL membraneless MEC with a gas diffusion cathode was operated on synthetic wastewater at different organic loads. It was concluded that process scale-up might be best accomplished using a "reactor-in-series" concept. Consequently, 855mL and 10L MECs were built and operated. By optimizing the hydraulic retention time (HRT) of the 855mL MEC and individually controlling the applied voltages of three anodic compartments with a real-time optimization algorithm, a COD removal of 5.7g L(R)(-1)d(-1) and a hydrogen production of 1.0-2.6L L(R)(-1)d(-1) was achieved. Furthermore, a two MECs in series 10L setup was constructed and operated on municipal wastewater. This test showed a COD removal rate of 0.5g L(R)(-1)d(-1), a removal efficiency of 60-76%, and an energy consumption of 0.9Whperg of COD removed.
本研究展示了微生物电解池（MEC）从 50 毫升规模扩大到 10 升规模。最初，在不同有机负荷下，使用无膜的气体扩散阴极 50 毫升 MEC 处理合成废水。结论认为，过程放大最好采用“串联式反应器”的概念。因此，构建和运行了 855 毫升和 10 升的 MEC。通过优化 855 毫升 MEC 的水力停留时间（HRT），并通过实时优化算法单独控制三个阳极室的施加电压，实现了 5.7g L（R）（-1）d（-1）的 COD 去除率和 1.0-2.6L L（R）（-1）d（-1）的氢气生成量。此外，构建并运行了市政污水的串联式双 10 升 MEC 装置。该测试显示 COD 去除率为 0.5g L（R）（-1）d（-1），去除效率为 60-76％，能量消耗为每去除 1g COD 需 0.9Wh。
