Heunggu Kang, Jaesik Jeong, Prabuddha Gupta et al.

International Journal of Hydrogen Energy • 2017

Keaton Larson Lesnik, Hong Liu

Environmental Science & Technology • 2017

The complex interactions that occur in mixed-species bioelectrochemical reactors, like microbial fuel cells (MFCs), make accurate predictions of performance outcomes under untested conditions difficult. While direct correlations between any individual waste stream characteristic or microbial community structure and reactor performance have not been able to be directly established, the increase in sequencing data and readily available computational power enables the development of alternate approaches. In the current study, 33 MFCs were evaluated under a range of conditions including eight separate substrates and three different wastewaters. Artificial Neural Networks (ANNs) were used to establish mathematical relationships between wastewater/solution characteristics, biofilm communities, and reactor performance. ANN models that incorporated biotic interactions predicted reactor performance outcomes more accurately than those that did not. The average percent error of power density predictions was 16.01 ± 4.35%, while the average percent error of Coulombic efficiency and COD removal rate predictions were 1.77 ± 0.57% and 4.07 ± 1.06%, respectively. Predictions of power density improved to within 5.76 ± 3.16% percent error through classifying taxonomic data at the family versus class level. Results suggest that the microbial communities and performance of bioelectrochemical systems can be accurately predicted using data-mining, machine-learning techniques.

S. Firdous, W. Jin, Naeem Shahid et al.

Environmental Technology & Innovation • 2018

Qin Chen, Wenhong Pu, Huijie Hou et al.

Bioresource Technology • 2017

Qing Du, Jingkun An, Junhui Li et al.

Journal of Power Sources • 2017

Yunfei Li, Jia Liu, Xuepeng Chen et al.

Chemical Engineering Journal • 2019

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

Biochemical Engineering Journal • 2018

Carlo Santoro, Alexey Serov, Rohan Gokhale et al.

Applied Catalysis B: Environmental • 2016

Different iron-based cathode catalysts have been studied for oxygen reduction reaction (ORR) in neutral media and then applied into microbial fuel cells (MFC). The catalysts have been synthesized using sacrificial support method (SSM) using eight different organic precursors named Niclosamide, Ricobendazole, Guanosine, Succinylsulfathiazole, Sulfacetamide, Quinine, Sulfadiazine and Pyrazinamide. Linear Sweep Voltammetry (LSV) curves were obtained for the catalysts using a O 2 saturated in 0.1 M potassium phosphate buffer and 0.1 M KCl solution and a Rotating Ring Disk Electrode (RRDE) setup in order to study the ORR characteristics. Additionally, we analyze the peroxide yield obtained for each catalyst which helps us determine the reaction kinetics. Those catalysts have been mixed with activated carbon (AC), carbon black (CB) and PTFE and pressed on a metallic mesh forming a pellet-like gas diffusion electrode (GDE). Results showed that Fe-Ricobendazole, Fe-Niclosamide and Fe-Pyrazinamide had the highest cathode polarization curves and highest power densities output that was above 200 μWcm -2 . Fe-Ricobendazole, Fe-Niclosamide, Fe-Pyrazinamide, Fe-Guanosine Fe-Succinylsulfathiazole and Fe-Sulfacetamide outperformed compared to Pt cathode. Fe-Sulfadiazene and Fe-Quinine performed better than AC used as control but less than Pt. Correlation of surface composition with performance showed that power density achieved is directly related to the total amount of nitrogen, and in particularly, N coordinated to metal and pyridinic and pyrrolic types while larger amounts of graphitic nitrogen result in worse performance.

Xiayuan Wu, Xiaomin Xiong, Gary Owens et al.

Bioresource Technology • 2018

Iryna Rusyn

Renewable and Sustainable Energy Reviews • 2021

Muhammad Waseem Mumtaz, Hamid Mukhtar, Waheed Miran et al.

Saudi Journal of Biological Sciences • 2024

Microbial fuel cell (MFC) technology is getting acceptance as an emphatic, sustainable and energy efficient alternative of conventional wastewater treatment strategies. MFCs utilize exoelectrogens as biocatalysts to degrade the complex organic substances present in wastewater with simultaneous power generation. The present study was aimed at investigating the impact of MFC electrode's modification with CeO 2 nanoparticles and polyaniline (PANI) on its performance characteristics. The hydrothermal approach was employed for the synthesis of CeO 2 nanoparticles followed by their deposition on carbon cloth (CC) as MFC cathode, whereas MFC's anode i.e., CF/NF was modified by in-situe deposition of PANI. The synthesized material was characterized with FTIR, XRD, SEM, EDX and BET analysis. The experiments were performed using dual chambered MFC fed with leather tannery wastewater using modified and unmodified electrodes. The highest outcomes of power density and corresponding current density were observed with PANI@NF composite anode and CeO 2 @CC as cathode i.e., 279.3 mW/m 2 corresponding to the current density of 581.8 mA/m 2 . The same MFC electrode configuration resulted in highest COD reduction, i.e., 80 % and coulombic efficiency of 19.86 %. On the other hand, MFC equipped with PANI@CF anode and CeO 2 @CC cathode also displayed comparable results. It was ascertained that modification of NF/CF anode with PANI (conductive polymer) and CC cathode with CeO 2 nanoparticles have significantly improved the overall MFC operational performance regarding tannery wastewater treatment and bioelectricity generation.

Clara Corbella, Rebecca P. Steidl, Jaume Puigagut et al.

PubMed • 2017

Power generation in microbial fuel cells implemented in constructed wetlands (CW-MFCs) is low despite the enrichment of anode electricigens most closely related to Geobacter lovleyi. Using the model representative G. lovleyi strain SZ, we show that acetate, but not formate or lactate, can be oxidized efficiently but growth is limited by the high sensitivity of the bacterium to oxygen. Acetate and highly reducing conditions also supported the growth of anode biofilms but only at optimal anode potentials (450 mV vs. standard hydrogen electrode). Still, electrode coverage was poor and current densities, low, consistent with the lack of key c-type cytochromes. The results suggest that the low oxygen tolerance of G. lovleyi and inability to efficiently colonize and form electroactive biofilms on the electrodes while oxidizing the range of electron donors available in constructed wetlands limits MFC performance. The implications of these findings for the optimization of CW-MFCs are discussed. [Int Microbiol 20(2):55-64 (2017)].

Aliyu Ishaq, Mohd Ismid Mohd Said, Shamila Azman et al.

Environmental Science and Pollution Research • 2023

Untreated landfill leachate can harm the environment and human health due to its organic debris, heavy metals, and nitrogen molecules like ammonia. Microbial fuel cells (MFCs) have emerged as a promising technology for treating landfill leachate and generating energy. However, high concentrations of total ammonia-nitrogen (TAN), which includes both ammonia and the ammonium ion, can impede MFC performance. Therefore, maintaining an adequate TAN concentration is crucial, as both excess and insufficient levels can reduce power generation. To evaluate the worldwide research on MFCs using landfill leachate as a substrate, bibliometric analysis was conducted to assess publication output, author-country co-authorship, and author keyword co-occurrence. Scopus and Web of Science retrieved 98 journal articles on this topic during 2011-2022; 18 were specifically evaluated and analysed for MFC ammonia inhibition. The results showed that research on MFC using landfill leachate as a substrate began in 2011, and the number of related papers has consistently increased every 2 years, totaling 4060 references. China, India, and the USA accounted for approximately 60% of all global publications, while the remaining 40% was contributed by 70 other countries/territories. Chongqing University emerged as one of the top contributors among this subject's ten most productive universities. Most studies found that maintaining TAN concentrations in the 400-800 mg L -1 in MFC operation produced good power density, pollution elimination, and microbial acclimatization. However, the database has few articles on MFC and landfill leachate; MFC ammonia inhibition remains the main factor impacting system performance. This bibliographic analysis provides excellent references and future research directions, highlighting the current limitations of MFC research in this area.

Lihua Huang, Xiufen Li, Yueping Ren et al.

International Journal of Hydrogen Energy • 2016

The microbial fuel cell (MFC) technology has potential in recovering bioelectricity from different types of waste. However, the low power density, closely associated with anode performance, limits its practical application. In this study, polyaniline (PANI) together with graphene was chosen to in-situ modify oxidized carbon cloth (CC) by the aid of secondary bond forces (such as π–π stacking, hydrogen bonds and electrostatic forces). The MFC reactor with PANI/graphene modified CC (PANI+G+CC) anode achieved the highest voltage with 573 ± 37 mV, and produced a peak power density of 884 ± 96 mW/m2, which was 1.3 and 1.9 times of those with the CC control. Based on cyclic voltammetry (CV) scanning and attenuated total reflectance-Fourier transform infrared spectroscopy (ATR-FTIR) spectra, it was speculated that the weakly acidic microenvironment derived from bio-anode delayed or impeded the deprotonation of PANI and made PANI hold a certain level of conductivity for electron transfer. This study provided a simple and environment-friendly modifying method to enable the prepared PANI+G+CC anode to dramatically promote the performance of MFC.

Saima Mirza, Mysoon M. Al‐Ansari, Mudassar Ali et al.

Environmental Research • 2022

Elahe Bazdar, Ramin Roshandel, Soheila Yaghmaei et al.

Bioresource Technology • 2018

Dang‐Trang Nguyen, Teppei Tamura, Ryuta Tobe et al.

Energy Reports • 2020

FliC-deficient Escherichia coli (E. coli) strain (△fliC) and its parent strain, wildtype K-12 (WT), were utilized to produce electricity in microbial fuel cells (MFCs). Although the two strains had similar growth curves, the biofilm of △fliC generated a 193 % higher power density than that of WT. The biofilm formation test revealed that △fliC was better than WT in biofilm formation on the anode in terms of bacterial cell concentration. This result provides valuable insight into the improvement of electricity production by E. coli-inoculated MFCs.

Marcelinus Christwardana, J. Joelianingsih, Linda Aliffia Yoshi et al.

Current Research in Green and Sustainable Chemistry • 2022

Anode is a critical component in improving the performance of microbial fuel cells (MFC). Carbon nanotubes (CNTs) anodes of varying concentrations were employed to coat carbon felt (CF) using the dyeing method without the need of any binder agent. The anode's large and conductive electrode surface area enhances the flow of electrons from the yeast to the current collector and the adhesion/growth of the biofilm. Additionally, the enhanced bioelectrochemical activity was demonstrated by complete cell electrochemical measurements on the MFC using the synthesized anode. The CF/CNT2 electrode (4% w/v of CNT) is the optimum electrode because it produces MFC comparable performance to the CF/CNT3 electrode (6% w/v of CNT). Using CF/CNT2 electrodes, yeast MFC yields voltages and Maximum Power Densities (MPDs) of 0.255 ​V and 72.46 ​mW/m2, respectively. When compared to MFCs employing CF without any modification with CNTs, these outputs were roughly 40 and 436% higher, respectively. While the glucose on the MFC substrate decreases by 95.97 ​± ​0.14%, the conductive biofilm developing on the electrode surface increases by 255 ​± ​13 ​mg, which helps to boost electron transfer fairly nicely. That seems to be, the modified CF/CNT2 anode promoted the enrichment of electro-active microorganisms.

Jingyi Ye, Teng Zhang, Yu Hao et al.

Journal of Environmental Management • 2024

Changyong Zhang, Peng Liang, Xufei Yang et al.

Biosensors and Bioelectronics • 2016

Jain Suransh, Arvind Kumar Mungray

Journal of environmental chemical engineering • 2022

Yuqin Lu, Xiao Bian, Hailong Wang et al.

Frontiers of Environmental Science & Engineering • 2018

Wenchao Xue, Wilasinee Chanamarn, Allan Sriratana Tabucanon et al.

Environmental Technology & Innovation • 2022

Osmotic microbial fuel cell (OsMFC) is an emerging wastewater treatment technology which incorporates multiple functions such as bioelectricity generation, organic substrate removal, and wastewater reclamation. This study firstly reported the performance and potential improvement measures of OsMFCs in treating selected agro-food industrial waste streams, i.e., brewery wastewater (BW), sweetener process wastewater (ST), and swine wastewater (SW). BW and SW wastewaters with good biodegradability, showed high power density (11.1 and 9.3 W/m3) and soluble chemical oxidation demand (sCOD) removal (89.2 ± 4.1 and 70.9 ± 3.8%) in OsMFCs. In contrast, OsMFC showed low performance with ST wastewater despite its high sCOD load. Possibilities in improving the treatment performance through modifying the operational and process settings were further explored. Shortening anode hydraulic retention time (HRT) was able to improve the bioelectricity generation and water production, whereas slightly compensated the sCOD and nutrient removal efficiencies. However, this approach showed limited effect in enhancing the ST-OsMFC. A pre-fermentation process with a minimum HRT of approximately 20 h was recommended to enhance the treatability of ST wastewater by previously converting the complex organic substrates in the raw water into volatile fatty acid (VFA).

Mengqian Lu, Shing Chen, Sofia Babanova et al.

Journal of Power Sources • 2017

Yuchen Liu, Yu-Hsuan Hung, SUTARSIS sutarsis et al.

Renewable Energy • 2021

Lu Zhang, Ruiwen Wang, Huidong Li et al.

Chemical Engineering Journal • 2024

Fida Hussain, Nabil Al‐Zaqri, Atthirah Binti Muhammad Adnan et al.

Sustainable Energy Technologies and Assessments • 2022

Jiayi Li, Hong‐Yu Ren, Qiang Fu et al.

Process Safety and Environmental Protection • 2025

Shuting Huang, Yanxian Geng, Jie Xia et al.

Small • 2021

The cathode material properties of the microbial fuel cell (MFC) have a quite important effect on their power generation capacity. Excellent oxygen reduction reaction (ORR) performance is the key to obtaining the remarkable capability of MFC. In this study, a series of catalysts are successfully prepared by a simple step-by-step hydrothermal, in situ growth, solution polymerization, and pyrolysis procedure. Here, the NiCo nanoparticles loading on nitrogen/carbon dual-doped matrix annealing at 800 °C (NiCo@DNC-800) under Ar shows good ORR activity with a maximum power density of 2325.60 ± 41.96 mW m -2 in the case of the 2 mg cm -2 minimal catalyst loading, and which is about 2.16 times more than that achieved by 20% Pt/C (1074.21 ± 39.36 mW m -2 ). The unique N/C duel-doped matrix provides more graphitic-N and pyridinic-N that can reduce the resistance of electron diffusion and transport, together with the synergistic catalysis of NiCo active sites improving the oxygen reduction reaction performance of MFC greatly. In addition, the NiCo@DNC-800 cathode catalyst demonstrates that composite materials have great application potential in water pollution treatment and new green energy strategies.

Yongkang Li, Guangyi Zhang, Danxin Liang et al.

Chemosphere • 2023

Nithya Rathinavel, James Obeth Ebenezer Samuel, Ananthi Veleeswaran et al.

Process Safety and Environmental Protection • 2024

Sayantani Saha, Anaparthi Ganesh Kumar, Md Tabish Noori et al.

European Polymer Journal • 2018

Federico Poli, Jacopo Seri, Carlo Santoro et al.

ChemElectroChem • 2019

Abstract Microbial fuel cells (MFCs), despite representing a promising technology, suffer from low power generation that hinders, in most of the cases, their application as power sources. In fact, MFCs are usually coupled with supercapacitors or batteries and these storage units accumulate the energy harvested by MFCs and deliver it on demand. In this work, the electrodes of a MFC are used as electrodes of an internal supercapacitor and discharges and self‐recharges are performed and investigated. Discharges between 1.5 mA and 4 mA were presented producing a maximum power of 1.59 mW. Discharges between 1 mA and 100 mA and recharges are systematically studied for three commercial supercapacitors (SCs) with different capacitances of 1 F, 3 F, and 6 F. The MFC was also connected in parallel with external SCs and discharged galvanostatically. The SC was self‐recharged by the MFC without any additional external power sources. At lower current pulses, the MFC contributed to the overall capacitance, probably owing to its faradaic component. At higher current pulses, the use of SCs enables the energy to be harvested by MFCs at power levels that could not be achieved with the MFC alone. This study demonstrates that, through the proper connection and operation mode of the MFC and SC, it is possible to improve and maximize the performance of every single unit. Understanding the MFC−SC combination is important for identifying the right practical application for which the combination is suitable.

Vignesh Ahilan, Camila Cabral de Barros, Gourav Dhar Bhowmick et al.

Bioelectrochemistry • 2019

Rana Tajdid Khajeh, Soheil Aber, Katayoon Nofouzi

Materials Chemistry and Physics • 2019

Giovanni Di Ilio, Giacomo Falcucci

International Journal of Hydrogen Energy • 2020

Aruna Kumar Mohanty, Young Eun Song, Boram Jung et al.

International Journal of Hydrogen Energy • 2020

Jian Sun, Bihai Cai, Yaping Zhang et al.

International Journal of Hydrogen Energy • 2016

Xiaoge Lou, Zhongliang Liu, Junxian Hou et al.

Catalysis Today • 2019

Behzad Ebadinezhad, Sirous Ebrahimi, Hanieh Shokrkar

Journal of Electroanalytical Chemistry • 2019