Results 101 to 110 of about 6,755 (188)

Detecting Excess Biofilm Thickness in Microbial Electrolysis Cells by Real‐Time In‐Situ Biofilm Monitoring

Biotechnology and Bioengineering, Volume 122, Issue 8, Page 2049-2062, August 2025.
ABSTRACT Long‐term stable operation of bioelectrochemical systems (BES) presupposes the avoidance of mass transfer limitations of the electroactive biofilm. Excessive pH‐gradients from bulk to electrode interface or substrate limitations of the electroactive biofilm are known to diminish the electrical performance of BES.
Andreas Netsch, Inka Latussek, Harald Horn, Michael Wagner   +3 more
wiley   +1 more source

Direct involvement of ombB, omaB, and omcB genes in extracellular reduction of Fe(III) by Geobacter sulfurreducens PCA [PDF]

, 2015
The tandem gene clusters orfR-ombB-omaB-omcB and orfS-ombC-omaC-omcC of the metal-reducing bacterium Geobacter sulfurreducens PCA are responsible for trans-outer membrane electron transfer during extracellular reduction of Fe(III)-citrate and ...
James K. Fredrickson, John M. Zachara, Liang Shi, Yimo Liu   +3 more
core   +2 more sources

Charge accumulation and electron transfer kinetics in Geobacter sulfurreducens biofilms

Energy & Environmental Science, 2012
Electroactive bacteria can use a polarized electrode as final electron acceptor, allowing the use of electrochemical techniques for a very accurate quantification of its respiration rate. Biofilm cell respiration has been recently demonstrated to continue after the interruption of electrode polarization since these bacteria can store electrons in the ...
Bonanni, P. S.;Schrott, G. D.; Robuschi, L.; Busalmen, J. P.   +4 more
openaire   +2 more sources

Non‐Respiratory Extracellular Electron Transfer Competes with Nitrogenase for Electrons in Rhodopseudomonas Palustris

Advanced Science, Volume 12, Issue 25, July 3, 2025.
This study develops a photosynthetic bioelectrochemical nitrogen fixation system for simultaneous nitrogen fixation and current generation using Rhodopseudomonas palustris. Notably, extracellular electron transfer (EET) serves as a redox balancing strategy, suppressing nitrogen fixation by competing with nitrogenase for electrons.
Xuewen Liu, Panqing Qi, Weipeng Fan, Wuyang Liu, Xingjiang Li, Yong Nie, Xiao‐Lei Wu   +6 more
wiley   +1 more source

Anode biofilm transcriptomics reveals outer surface components essential for high density current production in Geobacter sulfurreducens fuel cells.

PLoS ONE, 2009
The mechanisms by which Geobacter sulfurreducens transfers electrons through relatively thick (>50 microm) biofilms to electrodes acting as a sole electron acceptor were investigated. Biofilms of Geobacter sulfurreducens were grown either in flow-through
Kelly P Nevin, Byoung-Chan Kim, Richard H Glaven, Jessica P Johnson, Trevor L Woodard, Barbara A Methé, Raymond J Didonato, Sean F Covalla, Ashley E Franks, Anna Liu, Derek R Lovley   +10 more
doaj   +1 more source

Tailoring Chemical Microenvironment of Iron‐Triad Electrocatalysts for Hydrogen Production by Water Electrolysis

Advanced Energy Materials, Volume 15, Issue 25, July 1, 2025.
Iron‐triad‐based materials are attracting attention for green hydrogen production via water electrolysis due to their favorable electronic and flexible chemical properties, enabling the tailoring of electrochemical performance. This review covers the basics of water electrolysis, challenges in catalyst evaluation, and recent advances in tuning iron ...
Jean Marie Vianney Nsanzimana, Lebin Cai, Abdoulaye Djire, Gioele Pagot, Pietro Mattana, Keti Vezzù, Enrico Negro, Bao Yu Xia, Vito Di Noto   +8 more
wiley   +1 more source

Methanotrophic Flexibility of ‘Ca. Methanoperedens’ and Its Interactions With Sulphate‐Reducing Bacteria in the Sediment of Meromictic Lake Cadagno

Environmental Microbiology, Volume 27, Issue 7, July 2025.
In anoxic sediments of the meromictic freshwater Lake Cadagno ‘Ca. Methanoperedens’ and sulphate‐reducing Desulfobacterota QYQD01 co‐occur. Metagenomics revealed that ‘Ca. Methanoperedens’ genomes harbour different extracellular electron transfer pathways.
Maider J. Echeveste Medrano, Guangyi Su, Lucas A. Blattner, Pedro Leão, Irene Sánchez‐Andrea, Mike S. M. Jetten, Cornelia U. Welte, Jakob Zopfi   +7 more
wiley   +1 more source

Microbes, cables, and an electrical touch [PDF]

, 2016
In nature, highly efficient and diverse consortia of microbes cycle carbon and other elements while generating energy for growth. Driving these reactions are organisms with the ability to extract electrons from the chemical substrates and transfer them ...
Gemma Reguera
core   +1 more source

The ‘porin-cytochrome’ model for microbe-to-mineral electron transfer [PDF]

, 2012
Many species of bacteria can couple anaerobic growth to the respiratory reduction of insoluble minerals containing Fe(III) or Mn(III/IV). It has been suggested that in Shewanella species electrons cross the outer membrane to extracellular substrates via ‘
Afkar, Baron, Bouhenni, Burns, Cao, Clarke, Clarke, Clarke, Coursolle, DiChristina, Dohnalkova, Donald, Eggleston, El-Naggar, Firer-Sherwood, Firer-Sherwood, Gorby, Gralnick, Hartshorne, Hartshorne, Heidelberg, Jensen, Jiang, Jiao, Johs, Kerisit, Leang, Lies, Liu, Lower, Lower, Lower, Malvankar, Malvankar, Marsili, McLean, Meitl, Myers, Peretyazhko, Pessanha, Qian, Reardon, Reguera, Reguera, Roessler, Ross, Schuetz, Shi, Shi, Smith, Strycharz-Glaven, Strycharz-Glaven, Taylor, von Canstein, Xiong, Zargar, Zhang, Zhang   +57 more
core   +2 more sources

Elastic Deformation of Cellulose/Lignin‐Based Anode for Rejuvenating Aged Mix‐Cultured Electroactive Biofilms

Advanced Science, Volume 12, Issue 23, June 20, 2025.
A new strategy for revitalizing aged biofilms using the elastic deformation of biomass‐based flexible carbon aerogel is proposed. The elastic deformation removes the nonelectrogenic bacteria and the dead electrogenic bacteria, as well as a lot of loosely bound extracellular polymer materials.
Xue Liu, Zheng Zhang, Qingwen Zheng, Chengcheng Suo, Bailing Dong, Huiying Song, Jiayi Wang, Jia Liu, Runfeng Yuan, Sailike Milanbieke, Sha Luo, Chenhui Yang, Zhijun Chen, Ruiwen Wang, Wei Li, Shouxin Liu   +15 more
wiley   +1 more source