Results 71 to 80 of about 2,404 (150)

Production of gold nanoparticles by electrode-respiring Geobacter sulfurreducens biofilms [PDF]

Enzyme and Microbial Technology, 2016
The goal of this work was to synthesize gold nanoparticles (AuNPs) using electrode-respiring Geobacter sulfurreducens biofilms. We found that AuNPs are generated in the extracellular matrix of Geobacter biofilms and have an average particle size of 20nm. The formation of AuNPs was verified using TEM, FTIR and EDX.
Abid H. Tanzil, Sujala T. Sultana, Steven R. Saunders, Alice C. Dohnalkova, Liang Shi, Emily Davenport, Phuc Ha, Haluk Beyenal   +7 more
openaire   +2 more sources

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

Current Practices for Analyzing Soils and Sediments via Mössbauer Spectroscopy

Journal of Plant Nutrition and Soil Science, Volume 188, Issue 5, Page 742-773, October 2025.
ABSTRACT Environmental scientists are increasingly returning to Mössbauer spectroscopy (MBS) to reveal details about iron (Fe)‐bearing phases in soils and sediments. MBS is particularly powerful at distinguishing between Fe(II) and Fe(III) and, given appropriate background information, can offer exceptionally precise information on Fe speciation in ...
Aaron Thompson, James M. Byrne, Carolin L. Dreher, Andrew R. C. Grigg, Prachi Joshi, Drew E. Latta, Anke Neumann, Luiza Notini, Katie E. B. O'Neill, Katherine A. Rothwell   +9 more
wiley   +1 more source

Physiological Stratification in Electricity‐Producing Biofilms of Geobacter sulfurreducens

ChemSusChem, 2013
AbstractThe elucidation of mechanisms and limitations in electrode respiration by electroactive biofilms is significant for the development of rapidly emerging clean energy production and wastewater treatment technologies. In Geobacter sulfurreducens biofilms, the controlling steps in current production are thought to be the metabolic activity of cells,
Schrott, Germán David, Ordoñez, Maria Victoria, Robuschi, Luciana, Busalmen, Juan Pablo   +3 more
openaire   +3 more sources

Strategies for Reducing the Start-up Operation of Microbial Electrochemical Treatments of Urban Wastewater

Energies, 2015
Microbial electrochemical technologies (METs) constitute the core of a number of emerging technologies with a high potential for treating urban wastewater due to a fascinating reaction mechanism—the electron transfer between bacteria and electrodes to ...
Zulema Borjas, Juan Manuel Ortiz, Antonio Aldaz, Juan Feliu, Abraham Esteve-Núñez   +4 more
doaj   +1 more source

Current understanding of electroautotrophy and its relevance in astrobiology‐related research

mLife, Volume 4, Issue 5, Page 473-493, October 2025.
Abstract Electroautotrophy—the use of extracellular electrons as the primary energy source for autotrophic metabolism—remains understudied compared to photoautotrophy and chemoautotrophy. Its occurrence in deep‐earth and deep‐sea environments suggests profound implications for astrobiology, yet electroautotrophic microorganisms remain poorly explored ...
Quansheng Wang, Maggie C. Y. Lau Vetter
wiley   +1 more source

Critical Electrochemistry Technologies Applicable in Space Exploration

Advanced Science, Volume 12, Issue 32, August 28, 2025.
The available resources in space and discuss the application scenarios and challenges of electrochemical methods in four critical domains is analyzed: metallurgical processing of mineral resources, water resources utilization, carbon cycle management in extraterrestrial habitats, and electrical energy storage.
Ruisi Xu, Zepeng Lv, Shaolong Li, Jilin He, Jianxun Song   +4 more
wiley   +1 more source

Transcriptional response to elemental sulfur in Geobacter sulfurreducens

Bioscience, Biotechnology, and Biochemistry
Abstract The metal-reducing bacterium Geobacter sulfurreducens PCA is capable of anaerobic respiration using elemental sulfur as an electron acceptor. Despite 3 decades since its isolation, the molecular mechanisms underlying sulfur respiration remain unclear. In this study, we conducted a transcriptome analysis of G.
Masao Inoue, Daiki Fujita, Yukiko Izu, Riku Aono, Hisaaki Mihara   +4 more
openaire   +2 more sources

Computational and Experimental Analysis of Redundancy in the Central Metabolism of Geobacter sulfurreducens

PLoS Computational Biology, 2005
Previous model-based analysis of the metabolic network of Geobacter sulfurreducens suggested the existence of several redundant pathways. Here, we identified eight sets of redundant pathways that included redundancy for the assimilation of acetate, and for the conversion of pyruvate into acetyl-CoA.
Daniel Segura, Radhakrishnan Mahadevan, Katy Juarez, Derek R. Lovley   +3 more
openaire   +4 more sources

Biochemical Mechanisms and Energy Strategies of Geobacter Sulfurreducens [PDF]

, 2013
To provide the scientific understanding required to allow DOE sites to incorporate relevant biological, chemical, and physical processes into decisions concerning environmental remediation, a fundamental understanding of the controls on micro-organism growth in the subsurface is necessary.
Tien, Ming, Brantley, Susan L.
openaire   +2 more sources