Discover insights from thousands of peer-reviewed papers on microbial electrochemical systems
Bin Lai, Shiqin Yu, Paul V. Bernhardt et al.
Biotechnology for Biofuels · 2016
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Edward V. LaBelle, Harold D. May
Frontiers in Microbiology · 2017
It was hypothesized that a lack of acetogenic biomass (biocatalyst) at the cathode of a microbial electrosynthesis system, due to electron and nutrient limitations, has prevented further improvement in acetate productivity and efficiency. In order to increase the biomass at the cathode and thereby performance, a bioelectrochemical system with this acetogenic community was operated under galvanostatic control and continuous media flow through a reticulated vitreous carbon (RVC) foam cathode. The combination of galvanostatic control and the high surface area cathode reduced the electron limitation and the continuous flow overcame the nutrient limitation while avoiding the accumulation of products and potential inhibitors. These conditions were set with the intention of operating the biocathode through the production of H 2 . Biofilm growth occurred on and within the unmodified RVC foam regardless of vigorous H 2 generation on the cathode surface. A maximum volumetric rate or space time yield for acetate production of 0.78 g/L catholyte /h was achieved with 8 A/L catholyte (83.3 A/m 2 projected surface area of cathode) supplied to the continuous flow/culture bioelectrochemical reactors. The total Coulombic efficiency in H 2 and acetate ranged from approximately 80-100%, with a maximum of 35% in acetate. The overall energy efficiency ranged from approximately 35-42% with a maximum to acetate of 12%.
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Lu Zhang, Qingwen Zheng, Zheng Zhang et al.
International Journal of Molecular Sciences · 2023
Metal-organic frameworks (MOFs) are an emerging class of porous nanomaterials that have opened new research possibilities. The inherent characteristics of MOFs such as their large surface area, high porosity, tunable pore size, stability, facile synthetic strategies and catalytic nature have made them promising materials for enormous number of applications, including fuel storage, energy conversion, separation, and gas purification. Recently, their high potential as ideal platforms for biomolecule immobilization has been discovered. MOF-enzyme-based materials have attracted the attention of researchers from all fields with the expansion of MOFs development, paving way for the fabrication of bioelectrochemical devices with unique characteristics. MOFs-based bioelectrodes have steadily gained interest, wherein MOFs can be utilized for improved biomolecule immobilization, electrolyte membranes, fuel storage, biocatalysis and biosensing. Likewise, applications of MOFs in point-of-care diagnostics, including self-powered biosensors, are exponentially increasing. This paper reviews the current trends in the fabrication of MOFs-based bioelectrodes with emphasis on their applications in biosensors and biofuel cells.
Pau Batlle‐Vilanova, Sebastià Puig, Rafael Gonzalez‐Olmos et al.
RSC Advances · 2015
Martin Dennis, Gillian Mead, John Forbes et al.
The Lancet · 2018
Richard P. Jacoby, Manuela Peukert, A. Succurro et al.
Frontiers in Plant Science · 2017
Tahseena Naaz, Ankit Kumar, Anusha Vempaty et al.
Environmental Engineering Research · 2023
Uğur Azizoğlu, Gholamreza Salehi Jouzani, Estibaliz Sansinenea et al.
Reviews in Environmental Science and Bio/Technology · 2023
Huaiwei Zhang, Zhuang Sun, Kaiqiang Sun et al.
Biosensors · 2025
Alejandra L. Ibáñez de Aldecoa, Olga Zafra, José Eduardo González‐Pastor
Frontiers in Microbiology · 2017
Detlef P. van Vuuren, Jae Edmonds, Mikiko Kainuma et al.
Climatic Change · 2011
Can Dincer, Richard C. Bruch, Estefanía Costa‐Rama et al.
Advanced Materials · 2019
Sachin Ghalme, M. Hayat, Mahesh Harne
JOURNAL OF RENEWABLE MATERIALS · 2024
Harsh Bhatia, Gregory Norgard, Valerio Pascucci et al.
IEEE Transactions on Visualization and Computer Graphics · 2012
Subhajit Bhattacharjee, Stuart Linley, Erwin Reisner
Nature Reviews Chemistry · 2024
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Catarina M. Paquete, Leonor Morgado, Carlos A. Salgueiro et al.
Frontiers in Bioscience-Landmark · 2022
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Mon Oo Yee, Jörg S. Deutzmann, Alfred M. Spormann et al.
Nanotechnology · 2020
Xinyi Yuan, Haiyi Xu, Xingwu Liu et al.
Interdisciplinary materials · 2025
Mixed electronic-ionic conductors are crucial for various technologies, including harvesting power from humidity in a durable, self-sustainable, manner unrestricted by location or environment 1,2 . Biological proteins have been proposed as mixed conductors for 50 years 3,4 . Recently, Geobacter sulfurreducens pili filaments have been claimed to act as nanowires to generate power 5,6 . Here, we show that the power is generated by G. sulfurreducens -produced cytochrome OmcZ nanowires that show 20,000-fold higher electron conductivity than pili 7 . Remarkably, nanowires show ultrahigh electron and proton mobility (>0.25 cm2/Vs), owing to directional charge migration through seamlessly-stacked hemes and a charged, hydrogen-bonding surface, respectively. AC impedance spectroscopy and DC conductivity measurements using four-probe van der Pauw and back-gated field-effect-transistor devices reveal that humidity increases carrier mobility by 30,000-fold. Cooling halves the activation energy, thereby accelerating charge transport. Electrochemical measurements identify the voltage and mobilities required to switch pure electronic conduction to mixed conduction for power generation. The high aspect ratio (1:1000) and hydrophilic nanowire surface captures moisture efficiently to reduce oxygen reversibly, generating large potentials (>0.5 V) necessary to sustain high power. Our studies establish a new class of biologically-synthesized, low-cost and high-performance mixed-conductors and identify key design principles for improving power output using highly-tunable electronic and protein structures.
Valentina Bisinella, Sarah Schmidt, Anna Sofie Varling et al.
Waste Management · 2023
Ildefonso M. De la Fuente, Jesús M. Cortés, Edelmira Valero et al.
PLoS ONE · 2014