Enhanced power generation in a single-chamber dynamic membrane microbial fuel cell using a nonstructural air-breathing activated carbon fiber felt cathode

Li, Xinyang; Liu, Guicheng; Ma, Fujun; Sun, Shaobin; Zhou, Siyu; Ardhi, Ryanda Enggar Anugrah; Lee, Joong Kee; Yao, Hong

doi:10.1016/j.enconman.2018.07.011

Cited by 16 publications

(3 citation statements)

References 35 publications

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“…This composite material showed higher proton conductivity with less membrane resistance, enhancing the Coulombic efficiency 29 . The ACFF used in the current study also positively impacted power production and Coulombic efficiency 30 …”

Section: Resultsmentioning

confidence: 76%

Effect of organic loading on bioelectricity generation potential of dual‐chambered microbial fuel cell treating chocolaterie wastewater

Xu¹,

ArunKumar

Jeyakumar

2023

Env Prog and Sustain Energy

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Microbial fuel cells (MFC) are recent advancements in treating wastewater and generating power simultaneously. In the present study, chocolaterie wastewater rich in organic content was the substrate in a dual‐chambered MFC. Activated Carbon Fiber Felt (ACFF) electrodes (anode and cathode) were separated by Nafion 117 proton exchange membrane in the dual‐chambered reactor. The primary goal was to investigate the impact of organic loading on MFC efficiency in treating chocolaterie wastewater and carrying out microbial analysis. 1, 2, 3, and 4 gCOD/L were the organic loadings of the reactor. MFC performance increased till the optimum value, and after that, it declined. A total of 2 gCOD/L was the optimum organic loading. At this optimum organic loading, dual‐chambered MFC removed 79% of total chemical oxygen demand (TCOD), 70% of soluble chemical oxygen demand (SCOD), and 67% of total suspended solids (TSS). At 2 gCOD/L organic loading, the maximum power density was 99 mW/m2. Coulombic efficiency was 58% at 1 gCOD/L and 30% at 2 gCOD/L organic loadings. Microbial analysis revealed the presence of Ochrobactrum and Pseudomonas sp. as dominant exoelectrogens in the anodic biofilm. These species were proven for the contaminant degradation efficiency and potential for power generation. Hence dual‐chambered MFCs can treat high‐strength chocolaterie wastewaters efficiently at optimum operating conditions.

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Section: Resultsmentioning

confidence: 76%

Effect of organic loading on bioelectricity generation potential of dual‐chambered microbial fuel cell treating chocolaterie wastewater

Xu¹,

ArunKumar

Jeyakumar

2023

Env Prog and Sustain Energy

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“…However, no further in-depth studies have been conducted. Li, Yao, and co-workers proposed the concept of the dynamic membrane in a tubular dual-chamber MFC or a conical single-chamber MFC, , which is equivalent to the concept of the microbial separator. These studies proved that the biofilm layer composed of filamentous bacteria and vorticellidae-like protozoa consumed most of the DO and prevented the transfer of oxygen from the cathode to the anode chambers, ultimately increasing the power output of MFCs .…”

Section: Evolution and Recent Advances In Separatorsmentioning

confidence: 99%

Sorting Out the Latest Advances in Separators and Pilot-Scale Microbial Electrochemical Systems for Wastewater Treatment: Concomitant Development, Practical Application, and Future Perspective

Li,

Liang,

Tian

et al. 2024

Environ. Sci. Technol.

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To date, dozens of pilot-scale microbial fuel cell (MFC) devices have been successfully developed worldwide for treating various types of wastewater. The availability and configurations of separators are determining factors for the economic feasibility, efficiency, sustainability, and operability of these devices. Thus, the concomitant advances between the separators and pilot-scale MFC configurations deserve further clarification. The analysis of separator configurations has shown that their evolution proceeds as follows: from ion-selective to ion-non-selective, from nonpermeable to permeable, and from abiotic to biotic. Meanwhile, their cost is decreasing and their availability is increasing. Notably, the novel MFCs configured with biotic separators are superior to those configured with abiotic separators in terms of wastewater treatment efficiency and capital cost. Herein, a highly comprehensive review of pilot-scale MFCs (>100 L) has been conducted, and we conclude that the intensive stack of the liquid cathode configuration is more advantageous when wastewater treatment is the highest priority. The use of permeable biotic separators ensures hydrodynamic continuity within the MFCs and simplifies reactor configuration and operation. In addition, a systemic comparison is conducted between pilot-scale MFC devices and conventional decentralized wastewater treatment processes. MFCs showed comparable cost, higher efficiency, long-term stability, and significant superiority in carbon emission reduction. The development of separators has greatly contributed to the availability and usability of MFCs, which will play an important role in various wastewater treatment scenarios in the future.

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“…In the growing global demand for energy, the growing dependence on fossil fuels poses a major challenge for modern and developed society [1]. Addressing these problems requires the development of clean technologies that use renewable energy sources that promote sustainability [2][3][4][5]. Recently emerging energy technologies are growing remarkably [6,7].…”

Section: Introductionmentioning

confidence: 99%

Activated Carbon Electrodes for Bioenergy Production in Microbial Fuel Cells Using Synthetic Wastewater as Substrate

Agüero-Quiñones,

Ávila-Sánchez,

Rojas-Flores

et al. 2023

Sustainability

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The growing global energy demand drives the need to develop new clean energy technologies. In this context, microbial fuel cells (MFC) are one of the emerging technologies with great potential for eco-friendly energy generation; however, the correct choice of electrode material is a significant limitation in the optimal configuration of MFCs. Therefore, this research evaluated the efficiency of activated carbon (AC) anode electrodes for bioenergy production in MFC using synthetic wastewater as a substrate. Peak values of voltage (1120 ± 0.050 mV), current (4.64 ± 0.040 mA), power density (208.14 ± 17.15 mW/cm2), and current density (5.03 A/cm2) were generated, and the Rint obtained was 214.52 ± 5.22 Ω. The substrate was operated at pH values from 5.31 to 7.66, maximum ORP values (858 mV) were reached, and turbidity was reduced to 25.11 NTU. The SEM-EDS (scanning electron microscopy–energy-dispersive X-ray spectroscopy) analyses allowed us to observe the morphology and composition of the AC electrodes, revealing a predominance of O, C, Si, Al, Fe, K, and Ca. It is concluded that the AC electrodes have the potential to produce bioenergy at a laboratory by means of MFC.

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Enhanced power generation in a single-chamber dynamic membrane microbial fuel cell using a nonstructural air-breathing activated carbon fiber felt cathode

Cited by 16 publications

References 35 publications

Effect of organic loading on bioelectricity generation potential of dual‐chambered microbial fuel cell treating chocolaterie wastewater

Effect of organic loading on bioelectricity generation potential of dual‐chambered microbial fuel cell treating chocolaterie wastewater

Sorting Out the Latest Advances in Separators and Pilot-Scale Microbial Electrochemical Systems for Wastewater Treatment: Concomitant Development, Practical Application, and Future Perspective

Activated Carbon Electrodes for Bioenergy Production in Microbial Fuel Cells Using Synthetic Wastewater as Substrate

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