Syntrophy Goes Electric: Direct Interspecies Electron Transfer

Annual Review of Microbiology, Journal Year: 2017, Volume and Issue: 71(1), P. 643 - 664

Published: July 12, 2017

Direct interspecies electron transfer (DIET) has biogeochemical significance, and practical applications that rely on DIET or DIET-based aspects of microbial physiology are growing. Mechanisms for have primarily been studied in defined cocultures which Geobacter species one the partners. Electrically conductive pili (e-pili) can be an important electrical conduit DIET. However, there may instances contacts made between transport proteins associated with outer membranes Alternatively, partners plug into carbon materials, such as granular activated carbon, cloth, biochar, long-range exchange without need e-pili. Magnetite promotes DIET, possibly by acting a substitute outer-surface c-type cytochromes. is primary mode some anaerobic digesters converting wastes to methane. Promoting materials shows promise stabilizing accelerating methane production digesters, permitting higher organic loading rates. Various lines evidence suggest terrestrial wetlands, source atmospheric also role oxidation coupled sulfate reduction, control releases. The finding serve electrons photosynthesis further broadens its potential environmental significance. Microorganisms capable good catalysts several bioelectrochemical technologies e-pili promising renewable electronic materials. study early stages, additional investigation required better understand diversity microorganisms importance flow environments, biochemistry

Language: Английский

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Direct interspecies electron transfer via conductive materials: A perspective for anaerobic digestion applications

Bioresource Technology, Journal Year: 2018, Volume and Issue: 254, P. 300 - 311

Published: Feb. 2, 2018

Language: Английский

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Methane Production and Conductive Materials: A Critical Review

Environmental Science & Technology, Journal Year: 2018, Volume and Issue: 52(18), P. 10241 - 10253

Published: Aug. 17, 2018

Conductive materials (CM) have been extensively reported to enhance methane production in anaerobic digestion processes. The occurrence of direct interspecies electron transfer (DIET) microbial communities, as an alternative or complementary indirect (via hydrogen formate), is the main explanation given justify improvement production. Not disregarding that DIET can be promoted presence certain CM, it surely does not explain all observations. In fact, methanogenic environments was only unequivocally demonstrated cocultures Geobacter metallireducens with Methanosaeta harundinacea Methanosarcina barkeri and frequently sp. are detected improved driven systems. Furthermore, conductive carbon nanotubes were shown accelerate activity methanogens growing pure cultures, where expected occur, hydrogenotrophic ubiquitous full-scale digesters treating for example brewery wastewaters, indicating important mechanism those This paper presents overview effect several iron-based carbon-based CM bioengineered systems, focusing on communities' changes. Control assays, fundamental elements support major conclusions experiments, critically revised discussed.

Language: Английский

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Advances towards understanding and engineering direct interspecies electron transfer in anaerobic digestion

Bioresource Technology, Journal Year: 2017, Volume and Issue: 244, P. 698 - 707

Published: Aug. 8, 2017

Language: Английский

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Synergetic promotion of syntrophic methane production from anaerobic digestion of complex organic wastes by biochar: Performance and associated mechanisms

Bioresource Technology, Journal Year: 2017, Volume and Issue: 250, P. 812 - 820

Published: Dec. 6, 2017

Language: Английский

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Towards engineering application: Potential mechanism for enhancing anaerobic digestion of complex organic waste with different types of conductive materials

Water Research, Journal Year: 2017, Volume and Issue: 115, P. 266 - 277

Published: March 1, 2017

Language: Английский

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Role and Potential of Direct Interspecies Electron Transfer in Anaerobic Digestion

Energies, Journal Year: 2018, Volume and Issue: 11(1), P. 107 - 107

Published: Jan. 3, 2018

Anaerobic digestion (AD) is an effective biological treatment for stabilizing organic compounds in waste/wastewater and simultaneously producing biogas. However, it often limited by the slow reaction rates of different microorganisms’ syntrophic metabolisms. Stable fast interspecies electron transfer (IET) between volatile fatty acid-oxidizing bacteria hydrogenotrophic methanogens crucial efficient methanogenesis. In this interaction, electrons are exchanged via redox mediators such as hydrogen formate. Recently, direct IET (DIET) has been revealed important route AD. Microorganisms undergoing DIET form electrical connections membrane-associated cytochromes conductive pili; thus, not required exchange. This indicates that more thermodynamically favorable than indirect IET. Recent studies have shown materials (e.g., iron oxides, activated carbon, biochar, carbon fibers) can mediate DIET. attach to materials’ surfaces or vice versa according particle size, biofilms aggregates. Different promote improve AD performance digesters treating feedstocks, potentially suggesting a new approach enhancing performance. review discusses role potential methanogenic systems, especially with promoting

Language: Английский

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Why do DIETers like drinking: Metagenomic analysis for methane and energy metabolism during anaerobic digestion with ethanol

Water Research, Journal Year: 2019, Volume and Issue: 171, P. 115425 - 115425

Published: Dec. 23, 2019

Language: Английский

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Improved efficiency of anaerobic digestion through direct interspecies electron transfer at mesophilic and thermophilic temperature ranges

Chemical Engineering Journal, Journal Year: 2018, Volume and Issue: 350, P. 681 - 691

Published: May 30, 2018

Language: Английский

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Stimulation of the anaerobic digestion of the dry organic fraction of municipal solid waste (OFMSW) with carbon-based conductive materials

Bioresource Technology, Journal Year: 2017, Volume and Issue: 238, P. 30 - 38

Published: April 9, 2017

Language: Английский

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