Article
Chemistry, Physical
Meshack Imologie Simeon, Ruth Freitag
Summary: The effect of electrode spacing on the performance of a soil microbial fuel cell (MFC) under fed-batch treatment with synthetic urine medium (SUM) was investigated. The study found that a larger electrode spacing requires a longer time for the MFC to achieve stable and maximum performance.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Biochemistry & Molecular Biology
Chao Zhang, Pan He, Jiaxin Liu, Xiaolong Zhou, Xinfeng Li, Jing Lu, Bin Hou
Summary: Anaerobic oxidation of methane-microbial fuel cells (A-AOM-MFC and F-AOM-MFC) with acetate-acclimatizing or formate-acclimatizing electroactive culture were studied. A-AOM-MFC produced a higher voltage and F-AOM-MFC started up faster due to different mechanisms of methane-electrogen caused by different microbial alliances. In A-AOM-MFC, acetoclastic methanogens converted methane to acetate and carried out direct interspecific electron transfer (DIET) with Geobacter-predominated electricigens. In F-AOM-MFC, intermediate-dependent extracellular electron transfer (EET) occurred between hydro-methanogens and electricigens, with faster production of formate-dominant intermediates.
BIOELECTROCHEMISTRY
(2023)
Article
Chemistry, Physical
Gisele Giovanna Halfeld, Erica Janaina Rodrigues de Almeida, Valeria Reginatto, Adalgisa Rodrigues de Andrade
Summary: This study demonstrates a strategy to establish a highly efficient biofilm from glycerol in a microbial fuel cell and shows that glycerol can enhance voltage, power density, and current. Additionally, glycerol is found to influence microbial diversity and composition.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Energy & Fuels
Tobias Littfinski, Max Stricker, Edith Nettmann, Tito Gehring, Heinz Hiegemann, Stefan Krimmler, Manfred Luebken, Deepak Pant, Marc Wichern
Summary: This study successfully predicted the performance of wastewater-fed microbial fuel cells using comprehensive mathematical modeling and validation with experimental data, including the evolution of electricity generation, methane production, and effluent concentrations under different conditions.
Article
Chemistry, Physical
Shijing Luo, Yifei Wang, Tsz Ching Kong, Wending Pan, Xiaolong Zhao, Dennis Y. C. Leung
Summary: A flexible paper-based fuel cell with a novel cell architecture has been proposed in this research, showing significantly improved performance compared to traditional cells with a maximum power density and current density achieved at high levels. The cell also demonstrates stable long-term discharge capabilities and can be efficiently manufactured through 3D printing.
JOURNAL OF POWER SOURCES
(2021)
Article
Energy & Fuels
Tobias Littfinski, Max Stricker, Edith Nettmann, Tito Gehring, Heinz Hiegemann, Stefan Krimmler, Manfred Luebken, Deepak Pant, Marc Wichern
Summary: A comprehensive simulation approach using a low-parameterized model was used to predict pollutant transport, conversion, and electrical processes of mixed-culture single-chamber microbial fuel cells (MFCs) in this study. The proposed model successfully predicted the evolution of electricity generation, methane production, and effluent concentrations under different hydraulic conditions and organic loading rates.
Article
Agricultural Engineering
Jianqi Yuan, Haiguang Yuan, Shaobin Huang, Lijie Liu, Feichao Fu, Yongqing Zhang, Fangqin Cheng, Jianfeng Li
Summary: This study compared the effects and bacterial community structure of single-chamber microbial fuel cells (MFCs) in treating NH4+-containing wastewater with different COD/N ratios. Results showed that MFCs with low COD/N had better NH4+-N removal and electrochemical performance, while MFCs with high COD/N had better removal stability and COD removal effect. High-throughput sequencing revealed that the anode community structure was weakly affected by the COD/N ratio, with Geobacter dominating, but the cathode community was complex and susceptible to the COD/N ratio. pH profiling in the cathode biofilm and FISH were used to confirm the distribution trends of nitrifiers and denitrifiers.
BIORESOURCE TECHNOLOGY
(2021)
Article
Agricultural Engineering
Sha Long, Lin Zhao, Jinchen Chen, Juhee Kim, Ching-Hua Huang, Spyros G. Pavlostathis
Summary: The transformation of tetracycline in microbial fuel cells was mainly due to adsorption, with implications for the inhibition of biofilm activity and changes in microbial populations. The MFC-Fenton cathode proved to be an efficient and energy-saving process for tetracycline removal compared to anodic bio-oxidation.
BIORESOURCE TECHNOLOGY
(2021)
Article
Chemistry, Physical
Thi Pham Phan, Qui Thanh Hoai Ta, Phan Khanh Thinh Nguyen
Summary: The performance of a microbial electrolysis cell (MEC) fed with dark fermentation effluent (DEF) from water hyacinth (WH) was improved by optimizing the auxiliary processes. The optimal conditions for maximizing H-2 production yield and energy efficiency of the MEC were determined to be a 2.2-fold dilution of centrifuged-DFE (approximately 1.64 g of soluble metabolite products per L), a buffer concentration of 75 mM, and an applied voltage of 0.7 V. Under these optimized conditions, the H-2 yield and electrical energy recovery significantly improved compared to unoptimized conditions.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Environmental Sciences
Hirra Zafar, Sadia Ishaq, Nicolas Peleato, Deborah Roberts
Summary: This study conducts a meta-analysis to examine the impact of design and operating factors on the performance of microbial fuel cells (MFCs). The results indicate that dual-chamber MFCs generally achieve higher COD removal and coulombic efficiencies compared to single-chamber MFCs. MFCs using a solid operating phase also show higher coulombic efficiencies than those using a liquid operating phase. Furthermore, brush anodes are found to have higher power density than flat surface anodes. The use of a platinum catalyst improves power density, while coulombic efficiency is more dependent on the presence of a membrane separator.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Thermodynamics
Mostafa Ghasemi, Hegazy Rezk
Summary: This study utilizes fuzzy modeling and optimization to enhance the performance of microbial fuel cells (MFCs). By simulating and analyzing experimental data sets, the ideal parameter values for increasing power density, COD elimination, and coulombic efficiency were determined. The results demonstrate that the fuzzy model and optimization methods can significantly improve the performance of MFCs.
Article
Chemistry, Physical
Giovanni Di Ilio, Giacomo Falcucci
Summary: Microbial Fuel Cells (MFCs) show promise in converting organic waste into electricity, turning waste management into an economic opportunity. A three-dimensional numerical model based on the lattice Boltzmann method accurately evaluates MFC performance and reflects general operation trends. The computational approach has significant potential for assessing MFC performance accurately.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Agricultural Engineering
Hirra Zafar, Nicolas Peleato, Deborah Roberts
Summary: Food waste generation and its environmental impacts are becoming more serious due to urbanization, population growth, and food demand. Microbial fuel cells (MFCs) offer a sustainable solution for treating food waste and producing bioelectricity. This study compared two MFC configurations and found that the two-stage anaerobic up-flow leachate reactor MFC had better performance in removing substrate compared to the single-stage MFC. The results highlight the importance of reactor design and demonstrate the potential of MFCs for bioenergy generation from food waste.
BIORESOURCE TECHNOLOGY
(2023)
Article
Environmental Sciences
Zhanyu Guo, Heyang Zhou, Hua Yin, Xipeng Wei, Zhi Dang
Summary: This study investigated the effect of biochar on the biodegradation of BDE-47 and explored the interaction and assembly mechanism of the functional bacterial consortium QY2. The results showed that the addition of biochar significantly increased the biodegradation efficiency of BDE-47 by QY2. The presence of biochar promoted electron transfer in the biofilm through the strong interaction with redox-active extracellular polymeric substances (EPS), leading to enhanced debromination degradation of BDE-47. The assembly model and molecular ecological networks analysis revealed that the bacterial community assembly in biofilms was mainly driven by deterministic processes, resulting in higher biodiversity and broader habitat niche breadth for QY2 in response to BDE-47 disturbance.
ENVIRONMENTAL POLLUTION
(2022)
Article
Engineering, Environmental
Bao Yu, Liu Feng, Yali He, Lei Yang, Yu Xun
Summary: The study found that the SMFC with graphite felt as the anode performed well in terms of bioelectricity output and pollutant removal, which can be attributed to the conductivity of the material. The surface structure of the anode material also influences the internal resistance of the battery and the abundance of microbial communities.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Review
Agricultural Engineering
J. Shanthi Sravan, Athmakuri Tharak, J. Annie Modestra, In Seop Chang, S. Venkata Mohan
Summary: The global demand for transitioning from a fossil-based to a bio-based economy for low-carbon/renewable energy and products is driving the emergence of microbial fuel cell (MFC) technologies. Diversification of MFC systems, such as BET, MES, BES, EF, MDC, MEC, and EM, is actively being researched to enhance product output and explore mechanism specificity. The key role of microbial catalyzed electrochemical reactions in MFCs is directly linked to the electrometabolic activity of microorganisms, showing potential for multi-faced applications.
BIORESOURCE TECHNOLOGY
(2021)
Article
Electrochemistry
Bongkyu Kim, In Seop Chang, Richard M. Dinsdale, Alan J. Guwy
Summary: The scanning electrochemical impedance spectroscopy (EIS) technique can be used to confirm the variation of internal resistance in microbial fuel cells (MFCs) under different working conditions, including charge transfer resistance and ohmic resistance. By measuring the overall internal resistance of the system and the charge transfer resistance of the anode and cathode using the scanning EIS method, it was found that the resistances of each electrode changed variably. This method revealed that the rapid increase in the anode's charge transfer resistance was the main cause of power overshoot, providing valuable insights for understanding undesirable phenomena in MFCs.
ELECTROCHIMICA ACTA
(2021)
Editorial Material
Agricultural Engineering
Haluk Beyenal, In Seop Chang, S. Venkata Mohan, Deepak Pant
BIORESOURCE TECHNOLOGY
(2021)
Article
Agricultural Engineering
Ji-Yeon Kim, Sehoon Park, Jiyeong Jeong, Mungyu Lee, Byeongchan Kang, Se Hwan Jang, Jinsung Jeon, Nulee Jang, Soyoung Oh, Zee-Yong Park, In Seop Chang
Summary: Methanol addition significantly enhances the metabolism of the acetogenic strain E. limosum, particularly under H-2/CO2 conditions, leading to improved growth rate and H-2 consumption rate. The proteomic fold changes show high correspondence between methanol and H-2/CO2 conditions, suggesting the advantages of methanol addition to biomass enhancement and faster consumption of gaseous substrates during syngas fermentation.
BIORESOURCE TECHNOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Stacy Simai Reginald, Michael Etzerodt, Deby Fapyane, In Seop Chang
Summary: This study reports the successful heterologous expression of a Mo-Cu-containing carbon monoxide dehydrogenase (Mo-Cu CODH) from Hydrogenophaga pseudoflava in Escherichia coli, with the L-subunit showing CO oxidation activity. The expressed protein was used to construct a CO biomicrosensor with a linear response to CO concentration and high sensitivity and performance. This CO biomicrosensor has potential as an analytical tool for monitoring dissolved CO concentration dynamics in natural or synthetic systems.
Article
Agricultural Engineering
Hyunsoo Kang, Byeonghyeok Park, Soyoung Oh, Duleepa Pathiraja, Ji-Yeon Kim, Seunghyeon Jung, Jiyeong Jeong, Minseok Cha, Zee-Yong Park, In-Geol Choi, In Seop Chang
Summary: Through in silico prediction and in vivo assessment, we have successfully improved the rates of carbon monoxide conversion to acetate by Eubacterium limosum KIST612 strain.
BIORESOURCE TECHNOLOGY
(2021)
Article
Multidisciplinary Sciences
Hyeryeong Lee, Eun Mi Lee, Stacy Simai Reginald, In Seop Chang
Summary: This study compared the effects of different gold-binding peptides fused to enzymes on electrocatalytic activity, bioactivity, and material-binding behaviors, demonstrating the vital role of GBP type in the design, construction, and optimization of enzyme-modified electrodes for efficient interfacial DET in DET-based enzyme-electrode systems.
Article
Biology
Stacy Simai Reginald, Hyeryeong Lee, Nabilah Fazil, Basit Sharif, Mungyu Lee, Min Ji Kim, Haluk Beyenal, In Seop Chang
Summary: This study demonstrates the control of carbon monoxide dehydrogenase orientation on electrode surfaces and suggests its application for promoting direct electron transfer in bioelectrocatalytic systems.
COMMUNICATIONS BIOLOGY
(2022)
Article
Electrochemistry
Stacy Simai Reginald, Min Ji Kim, Hyeryeong Lee, Nabilah Fazil, Serah Choi, Soyoung Oh, Junhyeok Seo, In Seop Chang
Summary: This study introduces a gold-binding peptide to NAD(+)/NADH-dependent formate dehydrogenase (FDH) through genetic modification, enabling direct wiring of the enzyme to the electrode surface. The gold-binding activity of the fused enzymes depends on fusion site and tertiary structure, with the highest activity observed at the C-terminus. The presence of the gold-binding peptide increases the stability of the enzyme electrode and promotes direct electrochemical reactions. This method shows promise for bio-electronic applications involving NAD(+)/NADH-dependent enzymes.
ELECTROCHIMICA ACTA
(2022)
Article
Environmental Sciences
Muhammad Tayyab Khalid, Tanzila Anjum, Asim Laeeq Khan, Fahad Rehman, Muhammad Aslam, Mazhar Amjad Gilani, Faheem Hassan Akhtar, Mungyu Lee, In Seop Chang, Muhammad Yasin
Summary: Polyimide (P84)-based polymeric membranes were fabricated and used as spargers in the bubble column reactor (BCR) to enhance the gas-liquid mass transfer (GL-MT) rate of oxygen in water. Incorporating polyvinyl pyrrolidone (PVP) as a porogen and a Zeolitic Imidazolate Framework (ZIF-8) resulted in high porosity and hydrophobicity in the membranes, leading to increased GL-MT efficiency. The study demonstrated that ZIF-8 based membranes have the potential to improve dissolved oxygen concentration in BCR through bubble size reduction, increased bubble number, and improved hydrophobicity.
Article
Materials Science, Multidisciplinary
Hyeryeong Lee, Stacy Simai Reginald, In Seop Chang
Summary: Due to the unique properties of oxidoreductases, they have been used as biomaterials for bioelectrocatalytic systems. This study presents a simple and versatile approach for synthesizing binding positions of enzymes on electrodes using a gold-binding peptide (GBP). The optimized design of the synthetic enzyme, GDH gamma alpha-3GBP, exhibits higher affinity for gold (Au) surfaces and lower affinity for silicon dioxide (SiO2) compared to the wild-type GDH gamma alpha. This technology has the potential to fabricate small-scale biochips for enzyme-based bioelectronics.
ADVANCED MATERIALS TECHNOLOGIES
(2023)
Article
Nanoscience & Nanotechnology
Hyeryeong Lee, Yuna Bang, In Seop Chang
Summary: This study constructed an enzyme cascade-induced bioelectrocatalytic system by using solid binding peptide (SBP) as a molecular binder to coimmobilize invertase (INV) and flavin adenine dinucleotide (FAD)-dependent glucose dehydrogenase gamma-alpha complex (GDH γ α) on a single electrode surface. It emphasizes the importance of interenzyme orientation in electrocatalytic systems and demonstrates the efficacy of SBP fusion technology as a generic tool for developing cascade-induced direct bioelectrocatalytic systems.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Jae-Hun Kim, In Seop Chang, Seung-Hyeon Moon
Summary: The acid-base junction flow battery utilizes neutralization and water dissociation for energy conversion, with the bipolar membrane composed of quaternary aminated poly (2,6-dimethyl-1,4-phenylene oxide) and cation exchange layer showing significantly improved performance, achieving high power density and maintaining high efficiency in long-term operation of 60 cycles.
JOURNAL OF MATERIALS CHEMISTRY A
(2021)
Article
Agricultural Engineering
Bongkyu Kim, Nulee Jang, Mungyu Lee, Jae Kyung Jang, In Seop Chang
Summary: The study focused on harvesting bioelectricity and struvite mineral from nitrogen and phosphorous rich wastewater using MFCs and a chemical precipitation system. It achieved removal of over 70% of C sources and around 95% of P and N sources, proposing applications in decentralized treatment process of agriculture and livestock wastewater to achieve circular economy.
BIORESOURCE TECHNOLOGY
(2021)
Article
Chemistry, Physical
Nulee Jang, Muhammad Yasin, Mungyu Lee, Hyunsoo Kang, In Seop Chang
SUSTAINABLE ENERGY & FUELS
(2020)
