This study evaluates and compares the performance of microbial fuel cells (MFCs) and microbial capacitive deionization cells (MCDCs) fed with wastewater produced from the Bakken shale. The produced water was characterized by high levels of dissolved solids and chemical oxygen demand (COD). Two-compartment MFCs and three-compartment MCDCs were evaluated under batch-fed mode using mixed microbial consortia in the anode, ferricyanide in the cathode, and produced water as the electrolyte in the anode and capacitive deionization units. COD removal in the MFCs was 88%, while that in the MCDCs was limited to 76%. The lower performance of the MCDCs was due to the large impedance (6600 Ω cm²) compared with the MFCs (870 Ω cm²). However, the MCDCs achieved two-fold higher removal of dissolved solids. Both the MFCs and MCDCs suffered from a higher impedance induced by fouling in the latter stages of the operation.

这项研究评估并比较了由Bakken页岩产生的废水供入的微生物燃料电池（MFCs）和微生物电容去离子电池（MCDCs）的性能。采出水的特征在于高水平的溶解固体和化学需氧量（COD）。在分批进料模式下，使用阳极中的混合微生物联盟，阴极中的铁氰化物，阳极中的水作为电解质和电容去离子装置，对两室MFC和三室MCDC进行了分批进料模式的评估。MFC中的COD去除率为88％，而MCDC中的COD去除率为76％。所述MCDCs的较低性能是由于大的阻抗（6600Ω厘米²与微生物燃料电池相比）（870Ω厘米²）。但是，MCDC的溶解固体去除率提高了两倍。MFC和MCDC都在操作的后期受结垢的影响而产生较高的阻抗。