Faculty of Science, Department of Biology, Anadolu University, Eskişehir, Turkey.
Faculty of Science and Letters, Department of Biology, Aksaray University, Aksaray, Turkey.
Environ Sci Pollut Res Int. 2018 Mar;25(9):8777-8792. doi: 10.1007/s11356-018-1208-y. Epub 2018 Jan 11.
An operation of microcosm-constructed wetland modules combined with microbial fuel cell device (CW-MFC) was assessed for wastewater treatment and bioelectric generation. One of the crucial aims of the present experiment is also to determine effect of vegetation on wastewater treatment process and bioelectric production in wetland matrix with microbial fuel cell. Accordingly, CW-MFC modules with vegetation had higher treatment efficiency compared to unplanted wetland module, and average COD, NH, and TP removal efficiency in vegetated wetland modules were ranged from 85 to 88%, 95 to 97%, and 95 to 97%, respectively. However, the highest NO removal (63%) was achieved by unplanted control module during the experiment period. The maximum average output voltage, power density, and Coulombic efficiency were obtained in wetland module vegetated with Typha angustifolia for 1.01 ± 0.14 V, 7.47 ± 13.7 mWatt/m, and 8.28 ± 10.4%, respectively. The results suggest that the presence of Typha angustifolia vegetation in the CW-MFC matrix provides the benefits for treatment efficiency and bioelectric production; thus, it increases microbial activities which are responsible for biodegradation of organic compounds and catalyzed to electron flow from anode to cathode. Consequently, we suggest that engineers can use vegetated wetland matrix with Typha angustifolia in CW-MFC module in order to maximize treatment efficiency and bioelectric production.
采用微观构造湿地模块与微生物燃料电池装置（CW-MFC）相结合的操作，评估了用于废水处理和生物发电的方法。本实验的一个关键目的也是确定植被对湿地基质中微生物燃料电池废水处理过程和生物电产生的影响。因此，与未种植湿地模块相比，带有植被的 CW-MFC 模块具有更高的处理效率，而在植被湿地模块中，COD、NH 和 TP 的平均去除效率分别在 85%至 88%、95%至 97%和 95%至 97%之间。然而，在实验期间，未种植对照模块实现了最高的 NO 去除率（63%）。在种植狭叶香蒲的湿地模块中获得了最大的平均输出电压、功率密度和库仑效率，分别为 1.01±0.14V、7.47±13.7mWatt/m 和 8.28±10.4%。结果表明，CW-MFC 基质中狭叶香蒲植被的存在有利于提高处理效率和生物发电；因此，它增加了微生物的活性，这些微生物负责有机化合物的生物降解，并催化电子从阳极流向阴极。因此，我们建议工程师可以在 CW-MFC 模块中使用带有狭叶香蒲的植被湿地基质，以最大程度地提高处理效率和生物电产量。
