Oily wastewater treatment by a continuous flow microbial fuel cell and packages of cells with serial and parallel flow connections.,Bioelectrochemistry

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Oily wastewater treatment by a continuous flow microbial fuel cell and packages of cells with serial and parallel flow connections.
Bioelectrochemistry ( IF 4.8 ) Pub Date : 2020-04-15 , DOI: 10.1016/j.bioelechem.2020.107535
Milad Kadivarian ₁ , Ali A Dadkhah ₁ , Mohsen Nasr Esfahany ₁

Affiliation

This study reports the results of the application of microbial fuel cells (MFC) in refinery wastewater (RW) treatment. In this research, the effect of hydraulic retention time (HRT), and scale-up on the performance of a novel expandable modular design of single-chamber MFC (SCMFC) has been investigated. In the first part of the paper, the effect of HRT on chemical oxygen demand (COD) removal and electricity generation was examined. The generated steady open-circuit voltage (OCV) was 785 mV at HRT 90 h, and the provided maximum power density (PD) was 113 mW/m2 at HRT 15 h. At HRT of 45 h, COD removal increased up to 87% via an increase in the HRT. In the second part, the scale-up of SCMFC was investigated by serial (SFC) or parallel (PFC) connecting the outlets and inlets of fluid flows. The average produced OCV was 760 mV in PFC mode, and average produced PD in PFC and SFC modes were 97 and 75.6 mW/m2, respectively. COD removal in SFC and PFC modes were reported to be 89 and 42%, respectively. Compared to PFC mode, SFC mode was more efficient in terms of COD removal and coulombic efficiency. However, it produced lower PD compared to PFC mode. It is possible to control the quality and capacity of wastewater treatment by using combining the SFC and PFC mode connections in packages of MFCs.

中文翻译：

通过连续流动的微生物燃料电池和具有串联和并联流动连接的电池组处理含油废水。

这项研究报告了微生物燃料电池（MFC）在炼油厂废水（RW）处理中的应用结果。在这项研究中，研究了水力停留时间（HRT）和按比例放大对新型单室MFC（SCMFC）可扩展模块化设计性能的影响。在本文的第一部分中，研究了HRT对化学需氧量（COD）去除和发电的影响。在HRT 90 h时产生的稳定开路电压（OCV）为785 mV，在HRT 15 h时提供的最大功率密度（PD）为113 mW / m2。在HRT为45 h时，通过增加HRT可以将COD去除量增加高达87％。在第二部分中，通过串行（SFC）或并行（PFC）连接流体流的入口和入口来研究SCMFC的放大。在PFC模式下，平均产生的OCV为760 mV，PFC和SFC模式下的平均PD分别为97和75.6 mW / m2。据报道，SFC和PFC模式下的COD去除率分别为89％和42％。与PFC模式相比，SFC模式在COD去除和库仑效率方面更为有效。但是，与PFC模式相比，它产生的PD较低。通过在MFC的包装中组合使用SFC和PFC模式连接，可以控制废水处理的质量和能力。

更新日期：2020-04-16

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