Victoria Flexer, Bogdan C. Donose, Camille Lefebvre et al.

ACS Sustainable Chemistry & Engineering • 2016

A new monolithic carbonaceous material, 750-HMF-CarboHIPE, is presented here. The new electrode has been tested as an anode material inside a microbial bioelectrochemical system. In a purposely designed continuous flow bioelectrochemical reactor, the new material showed high biocompatibility, with a continuous biofilm development that remained bioelectrochemically active for over 6 months. A catalytic current of 1.56 mA cm–2/7.8 mA cm–3 (normalization by projected surface area and volumetric current) was reached. The current density was proportional to the flow rate. The new electrode material was synthesized using a high internal phase emulsion (HIPE) as a soft template to confine the polymerization and hydrothermal carbonization of two precursors derived from the cellulosic fraction of biomass and the bark of fruit trees: 5-hydroxymethylfurfural and phloroglucinol, respectively. Altogether, the sustainable synthetic route from biomass materials and the proposed application of oxidizing organic matter present in wastewater to produce electricity in a microbial fuel cell (MFC) close an interesting loop of prospective sustainable technology.

Daniele Molognoni, Matyas Devecseri, Daniele Cecconet et al.

Journal of Water Process Engineering • 2017

Thomas Krieg, Joana Madjarov, Luís F. M. Rosa et al.

Advances in biochemical engineering, biotechnology • 2018

Ziad T. Alismaeel, Ali H. Abbar, Osama F. Saeed

Separation and Purification Technology • 2022

Jan Arends, Sunil A. Patil, Hugo Roume et al.

Journal of CO2 Utilization • 2017

Qinghua Zhang, Yanyan Zhang, Daping Li

Bioresource Technology • 2017

Muhammad Hassan, Saira Kanwal, Ram Sarup Singh et al.

International Journal of Hydrogen Energy • 2023

Shuaishuai Xin, Jianguo Shen, Guocheng Liu et al.

Chemical Engineering Journal • 2019

Shaochuan Wang, Dongsheng Zhao, Zhenghui Qiu et al.

Journal of environmental chemical engineering • 2025

Yong Sun, Zezhen Zhang, Yongming Sun et al.

International journal of agricultural and biological engineering • 2020

The naturally lackadaisical kinetics of oxygen reduction reaction (ORR) in the cathode is one of the important factors that restrict the development of air-cathode microbial fuel cells (MFCs). In this work, the iron-nitrogen-carbon hierarchically nanostructured materials had been successfully fabricated by pyrolyzing glucose, iron chloride, and dicyandiamide with the aim of solving the issue. The obtained catalyst with an ultrathin nanostructure demonstrated an idiosyncratic electrocatalytic activity caused by the high content introduction of nitrogen and iron atoms, large surface area, which will offer sufficient active sites for improving the charge/mass transfer and reducing the diffusion resistance. Furthermore, with the increase of N dopant in the catalyst, better ORR catalytic activity could be achieved. Illustrating the N doping was beneficial to the ORR process. The high content of N, BET surface area caused by the N increasing could be responsible for the superior performance according to results of X-Ray photoelectron spectroscopy (XPS), Raman and Brunner-Emmet-Teller (BET) analysis. The ORR on the Fe–N3/C material follows 4e− pathway, and MFCs equipped with Fe–N3/C catalyst achieved a maximum power density (MPD) of 912 mW/m2, which was 1.1 times of the MPD generated by the commercial Pt/C (830 mW/m2). This research not only provided a feasible way for the fabrication of Pt-free catalyst towards oxygen reduction but also proposed potential cathode catalysts for the development of MFCs. Keywords: one-pot pyrolysis route, Fe−N-Doped carbon nanosheets, microbial fuel cells, iron-nitrogen co-doping, carbon based catalyst, electrochemical performance, cathode materials DOI: 10.25165/j.ijabe.20201306.5765 Citation: Sun Y, Zhang Z Z, Sun Y M, Yang G X. One-pot pyrolysis route to Fe−N-Doped carbon nanosheets with outstanding electrochemical performance as cathode materials for microbial fuel cell. Int J Agric & Biol Eng, 2020; 13(6): 207–214.

Jingzhen Wang, Kaijie Mu, Xuedong Zhao et al.

Catalysts • 2021

Metal, as a high-performance electrode catalyst, is a research hotspot in the construction of a high-performance microbial fuel cell (MFC). However, metal catalyst nanoparticles and their dispersed carriers are prone to aggregation, producing catalytic electrodes with inferior qualities. In this study, Pd is uniformly dispersed on the graphene framework supported by carbon black to form nanocomposite catalysts (Pd/GO-C catalysts). The effect of the palladium loading amount in the catalyst on the catalytic performance of the air cathode was further studied. The optimized metal loading afforded a reduced resistance and improved accessibility of Pd particles for the ORR. The maximum current output of the 0.250 Pd (mg/cm2) MFC was 1645 mA/m2, which is 4.2-fold higher than that of the carbon paper cathode. Overall, our findings provide a novel protocol for the preparation of high-efficient ORR catalyst for MFCs.

Meng Li, Yan-Wen Li, Quan-Ying Cai et al.

Bioresource Technology • 2019

Min Lü, Yijun Qian, Cuicui Yang et al.

Nano Energy • 2016

Yongming Sun

Biomedical Journal of Scientific & Technical Research • 2018

Two-chambered microbial fuel cell (MFC) with Nafion117 as proton exchange membrane (PEM) in the middle of reactors was built to treat the synthetic wastewater containing high concentration of glucose in this work. This MFC can produce 95% removal efficiencies of the maximum chemical oxygen demand (COD) and the highest coulombic efficiency (Ec) of 24.4% at the glucose concentration of 1 g/L. It was found that when the feed of glucose concentration is changed from 0.5 g/L to 4.0 g/L the volumetric power density is decreased from 5.3 W/ m 3 to 2.25 W/m 3 . When the glucose concentration is further increased to 12 g/L, almost no power output was observed. The optimized running concentration of glucose for as-designed MFC is between 0.5-4 g/L at the experimental conditions in this work. This work would pave a way for the direct treatment of wastewater containing high concentration of complex organic contaminants.

Nguyễn Hoàng Đạt Đặng, Hữu Thùy Đoàn, Văn Tuấn Đoàn et al.

Science & Technology Development Journal - Engineering and Technology • 2021

Global challenges on water and energy crisis have pressurized on water treatment industry to put into practice advanced technologies for ensuring a suitable supply of either water or energy services. Compared with other biological treatment technologies, constructed wetland (CW) is widely considered as an efficient eco-technology for wastewater treatment with the advantages of low cost, simple operation and maintenance. Microbial fuel cell (MFC) technology is the recently emerging approach in environmental engineering. The integration of MFCs within vertical up-flow CW systems (VSF-CW) as a sustainable technology, therefore, could provide dual benefits in nitrogen removal of wastewaters and energy recovery simultaneously. This study has preliminarily evaluated the acclimation performance of VSF-CW-MFC systems at the high loading rate (4.2 mg COD/h.L; COD:N = 10:1) of domestic wastewaters containing ammonia. Results demonstrated the potential of VSF-CW-MFC systems in achieving electricity generation and ammonia removal of domestic wastewaters at the high loading rate. The plant presence and influent pH of 7.0 could improve the performance efficiency. Average removal efficiencies of NH4+ and COD in planted microcosms with the influent pH of 7.0 were 43.4% and 79%, respectively.

Na Zhao, Zhaokun Ma, Huaihe Song et al.

Electrochimica Acta • 2018

Hassan Karimi‐Maleh, Ceren Karaman, Onur Karaman et al.

Journal of nanostructure in chemistry • 2022

Jia Lei Zhang, Yi Han Wang, Ke Huang et al.

Nano Energy • 2021

Wei Guo, Xiangrong Li, Liang Cui et al.

Bioprocess and Biosystems Engineering • 2021

Wendan Xue, Fengxiang Li, Qixing Zhou

Bioresource Technology • 2019

Kuk Chol Kim, Xiaoqiu Lin, Xiaolu Liu et al.

Environmental Technology • 2023

Microbial fuel cell (MFC) is a promising technology for recovering energy in wastewater through bacterial metabolism. However, it always suffers from low power density and electron transfer efficiency, restricting the application. This study fabricated the MnCo 2 S 4 -Co 4 S 3 /bamboo charcoal (MCS-CS/BC) through an easy one-step hydrothermal method, and the material was applied to carbon felt (CF) to form high-performance MFC anode. MCS-CS/BC-CF anode exhibited lower Rct (10.1 Ω) than BC-CF (17.24 Ω) and CF anode (116.1 Ω), exhibiting higher electrochemical activity. MCS-CS/BC-CF anode promoted the electron transfer rate and resulted in enhanced power density, which was 9.27 times higher (980 mW m -2 ) than the bare CF (105.7 mW m -2 ). MCS-CS/BC-CF anode showed the best biocompatibility which attracted distinctly larger biomass (146.27 mg/μL) than CF (20 mg/μL) and BC-CF anode (20.1 mg/μL). The typical exoelectrogens ( Geobacter and etc.) took dramatically higher proportion on MCS-CS/BC-CF anode (59.78%) than CF (2.99%) and BC-CF anode (26.67%). In addition, MCS-CS/BC stimulated the synergistic effect between exoelectrogens and fermentative bacteria, greatly favouring the extracellular electron transfer rate between bacteria and the anode and the power output. This study presented an efficient way of high-performance anode electrocatalyst fabrication for stimulating MFC power generation, giving suggestions for high-efficient energy recovery from wastewater.

Kai Huang, Le Zhang, Ting Xu et al.

Nature Communications • 2019

Temperature can govern morphologies, structures and properties of products from synthesis in solution. A reaction in solution at low temperature may result in different materials than at higher temperature due to thermodynamics and kinetics of nuclei formation. Here, we report a low-temperature solution synthesis of atomically dispersed cobalt in a catalyst with superior performance. By using a water/alcohol mixed solvent with low freezing point, liquid-phase reduction of a cobalt precursor with hydrazine hydrate is realized at -60 °C. A higher energy barrier and a sluggish nucleation rate are achieved to suppress nuclei formation; thus atomically dispersed cobalt is successfully obtained in a catalyst for oxygen reduction with electrochemical performance superior to that of a Pt/C catalyst. Furthermore, the atomically dispersed cobalt catalyst is applied in a microbial fuel cell to obtain a high maximum power density (2550 ± 60 mW m -2 ) and no current drop upon operation for 820 h.

Zejie Wang, Gurumurthy Dummi Mahadevan, Yicheng Wu et al.

Journal of Power Sources • 2017

Sajid Ali Ansari, Nazish Parveen, Thi Hiep Han et al.

Physical Chemistry Chemical Physics • 2016

Fibrous Pani-MnO2 nanocomposite were prepared using a one-step and scalable in situ chemical oxidative polymerization method. The formation, structural and morphological properties were investigated using a range of characterization techniques. The electrochemical capacitive behavior of the fibrous Pani-MnO2 nanocomposite was examined by cyclic voltammetry and galvanostatic charge-discharge measurements using a three-electrode experimental setup in an aqueous electrolyte. The fibrous Pani-MnO2 nanocomposite achieved high capacitance (525 F g(-1) at a current density of 2 A g(-1)) and excellent cycling stability of 76.9% after 1000 cycles at 10 A g(-1). Furthermore, the microbial fuel cell constructed with the fibrous Pani-MnO2 cathode catalyst showed an improved power density of 0.0588 W m(-2), which was higher than that of pure Pani and carbon paper, respectively. The improved electrochemical supercapacitive performance and cathode catalyst performance in microbial fuel cells were attributed mainly to the synergistic effect of Pani and MnO2 in fibrous Pani-MnO2, which provides high surface area for the electrode/electrolyte contact as well as electronic conductive channels and exhibits pseudocapacitance behavior.

XIE Yang-En, WANG Ding-Ling, Zhaokun Ma et al.

Journal of Inorganic Materials • 2018

: , (MFCs), , , (FeCl 3 ) Fe N , , Fe-N 2.61 , MFCs , 1395 mW/m 2

Asim Ali Yaqoob, Mohamad Nasir Mohamad Ibrahim, Claudia Guerrero–Barajas

Environmental Technology & Innovation • 2021

Ruitao Li, Xiang-peng Ren, Xinxin Fan et al.

iScience • 2024

Recent advancements in microbial fuel cells (MFC) technology have significantly contributed to the development of bio-cathode denitrification as a promising method for eco-friendly wastewater treatment. This study utilized an efficient repeated replacement method to enrich a mixed bio-cathode denitrifying culture (MBD) within a bio-cathode MFC, achieving a stable maximum output voltage of 120 ± 5 mV and a NO 3 - -N removal efficiency of 69.99 ± 0.60%. The electrotrophic denitrification process appears to be facilitated by electron shuttles. Microbial community analysis revealed a predominance of Proteobacteria , with Paracoccus and Pseudomonas as functional genera. Additionally, the isolated strain Lyy (belonging to Stutzerimonas ) from MBD demonstrated exceptional denitrification efficiencies exceeding 98% when treating wastewater with a broad range of C/N (2-12) ratios and KNO 3 concentrations (500-3000 mg/L) within 60 h. These results demonstrated the effectiveness of the repeated replacement method in enriching bio-cathode denitrifiers and advancing MFC application in sustainable wastewater management.

Lakshmi Pathi Thulluru, Anil Dhanda, Makarand M. Ghangrekar et al.

Fuel • 2025

Kengqiang Zhong, Meng Li, Yue Yang et al.

Applied Energy • 2019

Sibo Li, Zhiping Zhang, Lunrong Liu et al.

Renewable Energy • 2025

Pang You, S.K. Kamarudin

Chemical Engineering Journal • 2016

Maedeh Mohammadifar, J. Zhang, İdris Yazgan et al.

2016 IEEE SENSORS • 2016

In this work, we report paper-based microbial fuel cells (MFCs) that produce high power and current densities from one drop of bacteria-containing liquid. The devices feature (i) a simple and versatile fabrication technique by using paper as a substrate and (ii) an exceptional performance by incorporating novel nanostructured polymers, PAA-Poly (amic) acid) and PPDD-Poly(pyromellitic dianhydride-p-phenylene diamine), into the paper substrate. Four 3-D MFC configurations were designed by using different numbers of 2-D sheets of paper layers. Each device integrated four functional compartments (i.e. anode, reservoir, proton exchange membrane, and air-cathode) into one, two, three or four paper layers, respectively. The nanostructured polymers were engineered as a proton exchange membrane to enhance ion traveling efficiency or an oxygen mitigating layer to prevent diverting electrons away from the anode. Among the four MFC devices with different numbers of layers, two-layer paper-based MFC generated the highest current density of 47|UA/cm 2 and power density of 4|UW/cm 2 , both of which are substantially greater than achieved by previous paper-based MFCs and even comparable to that of conventional micro-sale counterparts.

Huiqiang Wang, Liling Wei, Jianquan Shen

International Journal of Hydrogen Energy • 2022

Xiafei Yin, Lixue Liu, Wei Shao et al.

Scientific Reports • 2024

Microbial fuel cells (MFCs) use the metabolic actions of microorganisms in an anode chamber to convert the chemical energy from wastewater into electrical energy. To improve the MFC power generation performance and chemical oxygen demand (COD) removal efficiency, Stenotrophomonas acidaminiphila was added to the anode chamber of a dual-compartment MFC. In this process, Stenotrophomonas acidaminiphila promotes the degradation of macromolecules such as bis(2-ethylhexyl) phthalate in food waste oil. Additionally, the generated electrical energy reduced Cu 2+ in the copper-containing wastewater in the cathode chamber to Cu monomers. The maximum power density of the MFC was 49.5 ± 3.5 mW/m 2 , the maximum removal efficiencies of COD and Cu 2+ were 63.5 ± 5.8% and 96.5 ± 1.0%, respectively, and Cu 2+ was reduced to brick-red Cu monomers. This study provides insights into the simultaneous implementation of food waste oil treatment and metal resource recovery.

Huanran Liu, Qinyan Yang, Chen Wang et al.

Water Research • 2025

Tingli Ren, Yuanfeng Liu, Xiaoqiu Lin et al.

Journal of Materials Chemistry A • 2024

The aerogel structure composed of NCNFs and rGO is conducive to the colonization and extracellular electron transport of microorganisms.

Anusha Vempaty, Abhilasha Singh Mathuriya

Environmental Technology • 2022

The separator is an important component of the microbial fuel cells (MFCs), which separates anode and cathode entities and facilitates ion transfer between both. Despite the high research in separators in recent years, the need for cost-effective, waste-driven selective separators in MFCs persists. Present study discloses the strategic fabrication of functionalized-tea-waste-ash-clay (FTWA-C) composite separator by integrating functionalized tea waste ash (FTWA) with potter's clay. Clay was used as a base, while FTWA was used as cation exchanger. FTWA and clay were separately mixed in four different ratios, 00:100 (C1); 05:95 (C2); 10:90 (C3); 15:85 (C4). Mixtures were then crafted manually as consecutive four layers. C1-side faced anode while separator-cathode-assembly was developed at C4. The separator was characterized by evaluating proton and oxygen transfer coefficient, and water-uptake analysis. The separator was also analysed for elemental composition, microstructure, particle size, and surface area and porous structure. SEM analysis of FTWA showed the presence of 15-100 nm pores. EDS analysis of the FTWA-C showed the presence of hygroscopic oxides, mainly SO 4 2- and SiO 2 . A slight peak observed at P / P o ∼1, confirmed the presence of macropores. The FTWA-C separator showed proton transfer coefficient as high as 18.7 × 10 -5 cm/s, and oxygen mass transfer coefficient of 2.1 × 10 -4 cm/s. The FTWA-C displayed the highest operating voltage of 612.4.2 mV, the power density of 1.81 W/m 3 , and COD removal efficiency of 87.52%. The fabrication cost of this separator was estimated to be $9.8/m 2 . FTWA-C could be an affordable and high-efficiency alternative for expensive ion-exchange membranes in MFCs.

N’Dah Joel Koffi, Satoshi Okabe

Bioresource Technology • 2022

Zunxing Liu, Dong Wang, Xiaonan Kou et al.

Journal of Power Sources • 2021

Xi Hu, Kai Chen, Kexin Guo et al.

Electrochimica Acta • 2021