Fatemeh Nourbakhsh, M. Mohsen‐Nia, Mohammad Pazouki

SN Applied Sciences • 2020

Rahul Kandpal, Mohammad Shahadat, S. Wazed Ali et al.

Journal of Water Process Engineering • 2021

Charles Amanze, Richmond Anaman, Xiaoyan Wu et al.

Water Research • 2023

Ankit Rao, Anubha Kaushik, Gunaseelan Kuppurangan et al.

Environmental Science and Pollution Research • 2023

Indrajit Chakraborty, Sovik Das, Brajesh Dubey et al.

International Journal of Environmental Research • 2021

Huei Ruey Ong, Chee Wai Woon, Muhammad Sheraz Ahmad et al.

International Journal of Electrochemical Science • 2018

The cathodic oxygen reduction reaction (ORR) is an influential step in fuel cells for the electrochemical energy conversion. Here we synthesized Polyvinylpyrrolidone incorporated carbon nanotube supported manganese dioxide (PVP-MnO2/CNT) composite and used as ORR electrocatalyst for air-cathode microbial fuel cell (MFC). The physical and electrochemical characterization of PVPMnO2/CNT were performed by using Field Emission Scanning Electron Microscopy (FESEM), Energy Dispersive X-ray analysis (EDX), X-ray Diffraction analysis (XRD), Cyclic Voltammetry (CV) and Electrochemical Impedance Spectroscopy (EIS). The electrochemical characterization results showed that the PVP-MnO2/CNT possessed the higher ORR catalytic activity with lower charge transfer resistance compared to MnO2 and MnO2/CNT. The performance of the electrocatalysts as cathode was evaluated in air-cathode MFC and it was found that the MFC with MnO2-PVP/CNT electrocatalyst generated a maximum power density of 1365.30 mW/m3, which was higher than that of MFCs with MnO2/CNT catalyst (1083.98 mW/m3), MnO2 (540.91 mW/m3) and CNT (438.47 mW/m3). Therefore, the viable synthetic strategy and proposed application of PVP-MnO2/CNT will broaden up the reality of MFC for power generation.

Praveena Mishra, Manzoor Ahmad Malla, Sushil Kumar Gupta et al.

ChemistrySelect • 2022

Abstract Anode modification is an effective method for enhancing extracellular electron transportation and improving the power density of Microbial Fuel Cells (MFC). In this study, we decorated the surface of Carbon Cloth (CC) and Graphite Felt (GF) with a new conductive polymer, poly(3,4‐ethylenedioxyhiophene) ( PEDOT), using galvanostatic electropolymerization and fabricated a CC/PEDOT and GF/PEDOT anode for MFC application. Cyclic Voltammetry (CV) and Electrochemical Impedance Spectroscopy (EIS) analyses illustrated that the PEDOT coating improved a redox‐active surface area, high electron transfer capabilities, and lower charge‐transfer resistance of anode. These modified electrodes give enhanced MFC performances with maximum energy generation and coulombic efficiency compared with plain electrode. The morphological characteristics like higher surface area and open structure of felt and carbon material promoted microbial formation and electrochemical active area. Compared with the unmodified anode, the PEDOT anodic modification improves the current density by 6.9 times i. e., 3.813 Am −2 . Thus GF/PEDOT anode excelled among the studied anodes with the synergetic effect of PEDOT coating and structural configuration, making it a potential optimum anode for MFC application.

Xing Yan, Ming‐Jun Zhu

Bioresource Technology • 2023

Mohammad Danish Khan, Mohammad Danish Khan, Shamas Tabraiz et al.

Frontiers in Chemical Engineering • 2022

This study investigated the advantages of using low-cost polyaniline-fabricated stainless steel fiber felt anode-based microbial fuel cells (PANI-SSFF-MFCs) for azo dye acid blue 29 (AB29) containing wastewater treatment integrated with an aerobic bioreactor. The findings of electrochemical impedance spectroscopy (EIS) and polarization studies showed that the PANI–SSFF anode considerably decreased the MFC internal resistance. The highest power density of 103 ± 3.6 mW m −2 was achieved by PANI-SSFF-MFCs with a decolorization efficiency of 93 ± 3.1% and a start-up time of 13 days. The final chemical oxygen demand (COD) removal efficiencies for integrated PANI–SSFF–MFC–bioreactor and SSFF–MFC–bioreactor set-ups were 92.5 ± 2% and 80 ± 2%, respectively. Based on 16S rRNA gene sequencing, a substantial microbial community change was observed in MFCs. The majority of sequences were from the Proteobacteria phylum, accounting for 72% and 55% in PANI–SSFF–anodic biofilm and suspension, respectively, and 58 and 45% in SSFF–anodic biofilm and suspension, respectively. The relative abundance of the seven most abundant genera ( Pseudomonas, Acinetobacter , Stenotrophomonas, Geothrix , Dysgonomonas, Shinella , and Rhizobiales ) was higher in PANI–SSFF–MFCs (46.1% in biofilm and 55.4% in suspension) as compared to SSFF–MFC (43% in biofilm and 40.8% in suspension) which predominantly contributed to the decolorization of AB29 and/or electron transfer. We demonstrate in this work that microbial consortia acclimated to the MFC environment and PANI-fabricated anodes are capable of high decolorization rates with enhanced electricity production. A combined single-chamber MFC (SMFC)-aerobic bioreactor operation was also performed in this study for the efficient biodegradation of AB29.

Lin Li, Bo Jiang, Dawei Tang et al.

RSC Advances • 2018

Long-term operation of microbial fuel cells (MFCs) results in an electrochemical activity decline by the degradation of the anodic biofilm. In this work, an alkaline soaking treatment is proposed as an efficient and simple method for anode regeneration. The alkaline treatment was employed in a used carbon-brush anode, and its performance was compared with those of two other traditional treatment methods, i.e. air drying and carbonization. Among all the treated MFC anodes, the one treated by alkaline soaking exhibited the highest recovery rate. A series of tests including a start-up process, scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS) and MFC performance were performed. The results show that alkaline soaking can modify the carbon fiber by introducing carboxyl groups onto the carbon surface and completely remove the aged biofilm, demonstrating that the alkaline treatment of used anodes is a practically effective method for the performance recovery of MFCs.

Jamil Islam, Govinda Chilkoor, Kalimuthu Jawaharraj et al.

Bioresource Technology • 2019

Ali Rezaei, Hassan Zarenezhad, Soheil Aber et al.

Process Safety and Environmental Protection • 2024

Subed Chandra Dev Sharma, Jiangwei Li, Anyi Hu et al.

Environmental Technology & Innovation • 2021

Yao Yin, Guangtuan Huang, Ningbo Zhou et al.

Energy Sources Part A Recovery Utilization and Environmental Effects • 2016

Nano-CeO2 was used to modify the carbon felt anode in microbial fuel cell (MFC). The MFC with the modified anode obtained the higher closed circuit voltage resulting from the lower anode potential, the higher maximum power density (2.94 W m−2), and the lower internal resistance (77.1 Ω). Cyclic voltammetry (CV) results implied that the bioelectrochemical activity of exoelectrogens was promoted by nano-CeO2. Electrochemical impedance spectroscopy (EIS) results revealed that the anodic charge transfer resistance of the MFC decreased with modified anode. This study demonstrates that the nano-CeO2 can be an effective anodic catalyst for enhancing the power generation of MFC.

Byung Chul Kim, Serah Choi, Jae Kyung Jang et al.

Bioresource Technology • 2017

Hongbo Liu, Yi Zhang, Yan-Hong Zhou et al.

Journal of Water Process Engineering • 2020

Liye Shen, Jingxing Ma, Pengfei Song et al.

Bioprocess and Biosystems Engineering • 2016

Tingting Yu, Qingsong Liu, Guang Chen et al.

International Journal of Hydrogen Energy • 2021

Sumaya Sarmin, Baranitharan Ethiraj, M. Amirul Islam et al.

The Science of The Total Environment • 2019

Wenguo Wu, Hao Niu, Dayun Yang et al.

Energies • 2019

Carbon nanotubes (CNTs) and polyelectrolyte poly(allylamine hydrochloride) (PAH) composite modified indium tin oxide (ITO) electrodes, by a layer-by-layer (LBL) self-assembly technique, was evaluated as an anode for microbial fuel cells (MFCs). The bioelectrochemistry of Shewanella loihica PV-4 in an electrochemical cell and the electricity generation performance of MFCs with multilayer (CNTs/PAH)n-deposited ITO electrodes as an anode were investigated. Experimental results showed that the current density generated on the multilayer modified electrode increased initially and then decreased as the deposition of the number of layers (n = 12) increased. Chronoamperometric results showed that the highest peak current density of 34.85 ± 2.80 mA/m2 was generated on the multilayer (CNTs/PAH)9-deposited ITO electrode, of which the redox peak current of cyclic voltammetry was also significantly enhanced. Electrochemical impedance spectroscopy analyses showed a well-formed nanostructure porous film on the surface of the multilayer modified electrode. Compared with the plain ITO electrode, the multilayered (CNTs/PAH)9 anodic modification improved the power density of the dual-compartment MFC by 29%, due to the appropriate proportion of CNTs and PAH, as well as the porous nanostructure on the electrodes.

Enas Taha Sayed, A.G. Olabi, Maryam Mouselly et al.

International Journal of Hydrogen Energy • 2023

Ola M. Gomaa, Nabila S. Selim, Reham Fathy et al.

Enzyme and Microbial Technology • 2021

Qian Ma, Kai‐Bo Pu, Wenfang Cai et al.

Industrial & Engineering Chemistry Research • 2018

Poly(3,4-ethylenedioxythiophene) (PEDOT) was electrochemically polymerized to in situ modify stainless steel (SS) plate electrode to improve its microbial bioelectrocatalytic activity as high-performance anode in microbial fuel cells. After modification, the surface of the electrode became rougher and showed better wettability. The electrochemical characteristics of PEDOT modified SS (PEDOT/SS) and bare SS electrodes were studied by cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS) and Tafel corrosion polarization curves, respectively. It has been demonstrated that PEDOT modification could increase electrode capacitance and reduce electron transfer resistances. Compared with untreated SS, PEDOT/SS electrode showed better anticorrosion property as well. The modified anode produced a maximum power density of 608.6 mW/m2, which was about 6 times higher than bare SS anode. These results indicate that PEDOT treatment is an efficient method for SS to improve its performance as anode in MFCs.

Ruggero Rossi, Derek M. Hall, Xu Wang et al.

Electrochimica Acta • 2020

Wei Guo, Shujun Chao, Qianjiang Chen

Bioprocess and Biosystems Engineering • 2019

Kuppusamy Sathishkumar, Jayaraman Narenkumar, Adikesavan Selvi et al.

Environmental Science and Pollution Research • 2018

Claudia Rojas, Ignacio T. Vargas, Mary Ann Bruns et al.

Bioelectrochemistry • 2017

Samuel Raj Babu Arulmani, Junxi Dai, Han Li et al.

Chemosphere • 2021

Md. Maksudur Rahman Khan, E. Baranitharan, D.M. Reddy Prasad et al.

MATEC Web of Conferences • 2016

In the present study, fast formation and characterization of biofilm and its role on power generation in the microbial fuel cell (MFC) were investigated and the biofilm formation was also correlated with electrochemical behavior of the MFC. MFC was operated with palm oil mill effluent as substrate and carbon cloth as electrode. A biofilm comprising electrochemically active bacteria on the anode surface showed crucial effect to enhance the performance of the MFC. Infrared spectroscopy and thermogravimetric analysis confirmed the presence of biofilm and scanning electron microscopy examined a biofilm and microbial clumps on electrode surface. The current density was directly dependent on the biofilm growth and increased significantly during the initial growth. Electrochemical impedance spectroscopy was done to monitor the progress of the anode colonization by the microorganisms in the MFC. The findings of this study demonstrated that biofilm formation facilitated electron transport as well as decreased the charge transfer resistance of the anode and thus increased the power generation in the cell.

Catalina González-Nava, J. Manríquez, Luis A. Godı́nez et al.

Bioelectrochemistry • 2021

Guiping Ren, Hongrui Ding, Yan Li et al.

Catalysts • 2016

Developing cheap electrocatalysts for cathodic oxygen reduction in neutral medium is a key factor for practical applications of microbial fuel cells (MFCs). Natural hematite was investigated as a low-cost cathode to improve the performance of microbial fuel cells (MFCs). With hematite-coated cathode, the cell current density stabilized at 330.66 ± 3.1 mA·m−2 (with a 1000 Ω load) over 10 days under near-neutral conditions. The maximum power density of MFC with hematite cathode reached to 144.4 ± 7.5 mW·m−2, which was 2.2 times that of with graphite cathode (64.8 ± 5.2 mW·m−2). X-ray diffraction (XRD), Raman, electrode potential analysis, and cyclic voltammetry (CV) revealed that hematite maintained the electrode activities due to the stable existence of Fe(II)/Fe(III) in mineral structure. Electrochemical impedance spectroscopy (EIS) results indicated that the cathodic electron transfer dynamics was significantly improved by using hematite to lower the cathodic overpotential. Therefore, this low-cost and earth-abundant natural mineral is promised as an effective cathode material with potential large-field applications of MFCs in future.

Tobias Littfinski, Edith Nettmann, Tito Gehring et al.

Journal of Power Sources • 2021

Nishat Khan, Abdul Hakeem Anwer, Anees Ahmad et al.

Biochemical Engineering Journal • 2019

Rahul Kandpal, Sharda Nara, Mohammad Shahadat et al.

Journal of the Taiwan Institute of Chemical Engineers • 2021

Ademola Adekunle, Abraham Gomez Vidales, L. A. Woodward et al.

Environmental Science and Pollution Research • 2020

Shengnan Li, Jiwei Jiang, Shih‐Hsin Ho et al.

Separation and Purification Technology • 2021

Ada Raucci, Antonella Miglione, Luca Lenzi et al.

Sensors and Actuators B Chemical • 2022

Valeria Agostino, Daniyal Ahmed, Adriano Sacco et al.

Electrochimica Acta • 2017

Y. Hindatu, Mohamad Suffian Mohamad Annuar, R. Subramaniam et al.

Bioprocess and Biosystems Engineering • 2017

Cheng Peng, Rui Shan, Haoran Yuan et al.

Bioresource Technology • 2018