Microbial Fuel Cells and Bioremediation

Effects of Alternating Polarity Frequency on the Assembly of Electro-Methanogenic Microbial Communities

This study evaluates how alternating polarity frequency affects the assembly of electro-methanogenic microbial communities, finding that 4-day alternation yields the best performance.

Thermodynamic, Electrochemical and Practical Constraints on Electromicrobial Formate Assimilation

The paper calculates the efficiency of butanol production via electromicrobial formate assimilation, comparing different electron delivery mechanisms and carbon assimilation pathways.

Shewanella oneidensis grows on biochar as an electron acceptor via direct contact without flavins

This study shows Shewanella oneidensis can grow on biochar using direct contact without flavins, accessing about 19% of biochar's electron storage capacity.

Enhancing Carbon Conversion Efficiency and Product Yield Through Systematic Biocatalyst Design for Microbial Electrosynthesis

This study enhances microbial electrosynthesis efficiency by optimizing biocatalyst conditions and anaerobic environments, achieving high CO2 conversion rates.

Removal of Hg and Cu from raw gold-mine tailings by microalgae- and bacteria-augmented microbial fuel cells: Effects of bio-augmentation, diurnal cycling and operational faults

This study evaluates the effectiveness of microbial fuel cells in removing mercury and copper from gold-mine tailings, finding that physicochemical processes, not algal bio-augmentation, drive contaminant removal.

Living electronic transistors with tunable conductivity

This paper develops a synthetic biology system in Shewanella oneidensis to control biofilm conductivity and electrochemical activity through optogenetic patterning and small molecule sensing.

A Bundled Antiparallel Cytochrome Nanowire Structure Suggests Roles in Cell-Cell Electron Transfer and Biofilm Formation

This study determines the atomic structure of cytochrome nanowires from Desulfuromonas soudanensis and shows they form antiparallel bundles, suggesting roles in electron transfer and biofilm formation across electroactive microbes.

Controlled Substrate Crossover from Cathode to Anode for Long-Term Autonomous Operation of Microbial Fuel Cells: A Transport-Reaction Modeling Study

This paper reframes substrate crossover in microbial fuel cells as a design variable to sustain microbial metabolism and improve long-term operation.

Multi-omic landscape of Mn(II) oxidation in Achromobacter pulmonis ss21: From multicopper oxidase to metabolic support electron transfer

This study identifies the molecular mechanisms of Mn(II) oxidation in Achromobacter pulmonis ss21, showing high efficiency and highlighting its potential for bioremediation.

Biological upgrading of C1-C2 products of electrocatalytic CO 2 reduction to C4-C6 carboxylates

The paper develops a two-step bioprocess using Clostridium species to convert C1-C2 CO2RR products into C4-C6 chemicals, improving carbon efficiency.

Bioelectricity Generation from Acidogenic Palm Oil Mill Effluents using Microbial Fuel Cells

This study demonstrates that microbial fuel cells can generate bioelectricity and treat acidogenic palm oil mill effluents more effectively with optimized conditions and stacked configurations.

Hydrogel-enhanced bioelectrochemical nitrate reduction for ammonium recovery from dilute nitrate via Shewanella oneidensis MR-1

This paper develops a hydrogel biocathode for efficient nitrate reduction to ammonium using Shewanella oneidensis MR-1, achieving high production rates and low energy consumption.

Expression and Engineering of Conductive Cytochrome Nanowires

This paper develops a platform for producing and engineering conductive cytochrome nanowires, achieving enhanced conductivity and enabling their use in sustainable electronic applications.

Prevalence of electricity production among culturable bacteria

This study surveys electricity production among environmental bacterial isolates, finding 11-22% of taxa display exoelectrogenic activity, identifying three novel species and showing phylogenetic conservation of the trait.

Cross-regulation of amino acid synthesis and catabolic electron transfer in bacteria

This study shows methionine activates catabolic electron transfer in bacteria via MetR, revealing cross-regulation between amino acid synthesis and catabolism.

Magnetic field enables spin matching in spin-selective pathways to enhance current in bacteria

The paper shows that a magnetic field enhances current in live S. oneidensis by improving spin matching in EET conduits when electrons are spin-polarised.

Spatial organization of self-assembled G-quadruplex nucleic acids tunes extracellular electron transfer in pathogenic biofilms

This study shows that Staphylococcus aureus biofilms naturally assemble G4-rich extracellular nucleic acids that facilitate electron transfer, with spatial organization influencing electroactivity.

Spin-Dependent Extracellular Respiration

This study shows that spin selectivity affects extracellular respiration in living Geobacter sulfurreducens biofilms, demonstrating a quantum effect in cellular metabolism.

Conserved multiheme cytochrome machinery for extracellular electron transfer is widespread and transcriptionally active across deep peat profiles

The paper identifies conserved extracellular electron transfer machinery in peatland microorganisms across depth profiles, showing transcriptional activity and potential role in carbon cycling.

Propionate oxidation by Geobacter sulfurreducens is electron acceptor dependent

This paper shows Geobacter sulfurreducens can oxidize propionate, but only when specific electron acceptors are present, and identifies the methylmalonyl-CoA pathway as the main degradation route.

Extracellular electron transfer in cable bacteria enables growth rates comparable to aerobic respiration

This study shows that the freshwater cable bacterium Electronema aureum GS can respire insoluble electron acceptors under anoxic conditions, achieving growth rates similar to aerobic respiration.

Electrode Reduction by Vibrio natriegens Depends on Balanced Expression of Multiheme Cytochromes

This study identifies that balanced expression of multiheme cytochromes is essential for Vibrio natriegens to reduce electrodes, highlighting the role of these proteins in extracellular electron transfer.

From Garden Soil to Bio-electricity: Utilizing Rhizosphere Diversity for Microbial Fuel Cell Operation

This study evaluates garden rhizosphere microbiotas for microbial fuel cell performance, finding that peppermint and ginkgo rhizosphere communities generate the highest current densities.

Trimethylammonia-lyases of Shewanella oneidensis and Their Role in Anaerobic Respiration

This study identifies two trimethylammonia-lyases in Shewanella oneidensis that produce terminal electron acceptors for anaerobic respiration.

Synthetic microbial co-cultures for modular bioelectronic sensing in diverse environments

The paper introduces a modular bioelectronic sensor system using synthetic microbial co-cultures to detect various analytes in different environments.

Integrating Fungal-Bacterial Synergy to Enhance Circular MFC-Hydroponic Performance

This study evaluates microbial consortia in MFCs to enhance wastewater treatment and electricity generation while supporting plant growth through PGPS production.

Formate-driven isoprene reduction enables energetic independence in Pelotomaculum schinkii: Evidence from metatranscriptomic and functional analyses

This study shows Pelotomaculum schinkii uses formate to reduce isoprene, enabling energy independence and altering microbial interactions in anoxic environments.

Highly efficient bio-catalytic oxygen reduction coupled to long-range electron transport in cable bacteria

The paper investigates oxygen reduction in cable bacteria and shows that conductive fibers mediate electron transport, while dedicated enzymes in the periplasm or inner membrane perform oxygen reduction.

Increased mutation rates and diversity are dominant features of Geobacter multiheme cytochromes

The paper analyzes mutation rates and diversity in Geobacter multiheme cytochromes, finding increased mutation rates and species-specific diversity that challenge homology-based annotation methods.

The metallome of Methanosarcina barkeri during electron uptake from acathode

This study quantifies metal accumulation in Methanosarcina barkeri during cathodic growth and identifies metal localization, suggesting their role in extracellular electron transfer.