Electrical current generation in microbial electrolysis cells by hyperthermophilic archaea Ferroglobus placidus and Geoglobus ahangari

Yılmazel, Yasemin Dilşad; Zhu, Xiuping; Kim, Kyoung-Yeol; Holmes, Dawn E.; Logan, Bruce E.

doi:10.1016/j.bioelechem.2017.09.012

Cited by 41 publications

(26 citation statements)

References 64 publications

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“…1) been shown that Geoglobus ahangari was exoelectrogenic by direct contact when placed in onechamber microbial electrolysis cells at 80 °C. In contrast to our results, the current produced was 13 particularly weak probably due to its use as an axenic culture, and its lack of enzymatic component to resist to oxidative stress on electrode (Yilmazel et al 2018).…”

Section: Enrichment Of Anode-respiring Community In Bes From Crushed contrasting

confidence: 98%

“…If the presence of Geoglobus species is consistent with its known capacity to transfer EET with acetate as electron donor (Yilmazel et al 2018), Thermococcus species abundance on polarized electrode is more surprising. Thermococcales are known to share an energetic peptidic or carbohydrate metabolisms, associated necessarily or not with the reduction of elemental sulfur (Bertoldo and Antranikian, 2006).…”

Section: Solid Electron Acceptor Determine the Microbial Ecology Of Ementioning

confidence: 99%

“…Then, their fermentative metabolism would lead to the production of acetate, H 2 and CO 2 which could then be used by Geoglobus species to grow using the electrode as the ultimate electrons acceptor. However, recent data have shown the inability of Geoglobus to transfer electrons to an electrode from H 2 (Yilmazel et al 2018). Previous studies have shown that some electroactive bacteria are also able to grow syntrophically with other microorganisms via direct interspecies electron transfer (DIET) (Shrestha and Rotaru, 2014).…”

Section: Solid Electron Acceptor Determine the Microbial Ecology Of Ementioning

confidence: 99%

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Specific enrichment of hyperthermophilic electroactive Archaea from deep-sea hydrothermal vent on electrically conductive support

Pillot

Frouin

Pasero

et al. 2018

Bioresource Technology

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While more and more investigations are done to study hyperthermophilic exoelectrogenic communities from environments, none have been performed yet on deep-sea hydrothermal vent. Samples of black smoker chimney from Rainbow site on the Atlantic mid-oceanic ridge have been harvested for enriching exoelectrogens in microbial electrolysis cells under hyperthermophilic (80 °C) condition. Two enrichments were performed in a BioElectrochemical System specially designed: one from direct inoculation of crushed chimney and the other one from inoculation of a pre-cultivation on iron (III) oxide. In both experiments, a current production was observed from 2.4 A/m to 5.8 A/m with a set anode potential of -0.110 V vs Ag/AgCl. Taxonomic affiliation of the exoelectrogen communities obtained on the electrode exhibited a specific enrichment of Archaea belonging to Thermococcales and Archeoglobales orders, even when both inocula were dominated by Bacteria.

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Section: Enrichment Of Anode-respiring Community In Bes From Crushed contrasting

confidence: 98%

Section: Solid Electron Acceptor Determine the Microbial Ecology Of Ementioning

confidence: 99%

Section: Solid Electron Acceptor Determine the Microbial Ecology Of Ementioning

confidence: 99%

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Specific enrichment of hyperthermophilic electroactive Archaea from deep-sea hydrothermal vent on electrically conductive support

Pillot

Frouin

Pasero

et al. 2018

Bioresource Technology

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“…No yeast extract was used, but resazurin, which is an electron shuttle, was used in the medium, and thus, power production needs to be confirmed in the absence of this chemical. Two other hyperthermophiles known to reduce solid iron and oxidize acetate have produced current densities of 680 mA m −2 at 85 °C (F. placidus) and 570 mA m −2 at 80 °C (Geoglobus ahangari) in MECs using a defined medium and no resazurin 60 . In comparison, G. sulfurreducens PCA produced 1,900 mA m −2 in the same reactors 60 .…”

Section: [H1] Exoelectrogenic Microorganismsmentioning

confidence: 99%

“…Two other hyperthermophiles known to reduce solid iron and oxidize acetate have produced current densities of 680 mA m −2 at 85 °C (F. placidus) and 570 mA m −2 at 80 °C (Geoglobus ahangari) in MECs using a defined medium and no resazurin 60 . In comparison, G. sulfurreducens PCA produced 1,900 mA m −2 in the same reactors 60 . How archaea carry out exogenous electron transfer is unknown.…”

Section: [H1] Exoelectrogenic Microorganismsmentioning

confidence: 99%

Electroactive microorganisms in bioelectrochemical systems

et al. 2019

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A vast array of microorganisms from all three domains of life can produce electrical current and transfer electrons to the anodes of different types of bioelectrochemical systems. These exoelectrogens are typically iron-reducing bacteria, such as Geobacter sulfurreducens, that produce high power densities at moderate temperatures. With the right media and growth conditions, many other microorganisms ranging from common yeasts to extremophiles such as hyperthermophilic archaea can also generate high current densities. Electrotrophic microorganisms that grow by using electrons derived from the cathode are less diverse and have no common or prototypical traits, and current densities are usually well below those reported for model exoelectrogens. However, electrotrophic microorganisms can use diverse terminal electron acceptors for cell respiration, including carbon dioxide, enabling a variety of novel cathode-driven reactions. The impressive diversity of electroactive microorganisms and the conditions in which they function provide new opportunities for electrochemical devices, such as microbial fuel cells that generate electricity or microbial electrolysis cells that produce hydrogen or methane.

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Role of Microorganisms in Bioelectrochemical Systems for Hydrogen and Bioelectricity Production

Mohamed

Thulasinathan

Arun

et al. 2022

Role of Microbes in Industrial Products and Processes

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Electrical current generation in microbial electrolysis cells by hyperthermophilic archaea Ferroglobus placidus and Geoglobus ahangari

Cited by 41 publications

References 64 publications

Specific enrichment of hyperthermophilic electroactive Archaea from deep-sea hydrothermal vent on electrically conductive support

Specific enrichment of hyperthermophilic electroactive Archaea from deep-sea hydrothermal vent on electrically conductive support

Electroactive microorganisms in bioelectrochemical systems

Role of Microorganisms in Bioelectrochemical Systems for Hydrogen and Bioelectricity Production

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