Journal ArticleDOI
Potentially shifting from interspecies hydrogen transfer to direct interspecies electron transfer for syntrophic metabolism to resist acidic impact with conductive carbon cloth
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TLDR
The results of this study demonstrated that anaerobic digesters supplemented with conductive carbon cloth had a higher capacity to resist the acidic impacts, and suggested that the predominant working mode for the interspecies electron exchange might have shifted from IHT to DIET in the presence of the conductivecarbon cloth during acidic impacts.About:
This article is published in Chemical Engineering Journal.The article was published on 2017-04-01. It has received 184 citations till now. The article focuses on the topics: Methanogenesis & Geobacter.read more
Citations
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Enhancement of methane production in anaerobic digestion process: A review
Yue Li,Yinguang Chen,Jiang Wu +2 more
TL;DR: In this article, a comprehensive overview of the methods reported to enhance each step involved in anaerobic digestion is provided, and the strategies for improving enzyme activity are summarized, as well as the key points for future studies are proposed.
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Syntrophy Goes Electric: Direct Interspecies Electron Transfer
TL;DR: The finding that DIET can serve as the source of electrons for anaerobic photosynthesis further broadens its potential environmental significance.
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Direct interspecies electron transfer via conductive materials: A perspective for anaerobic digestion applications.
TL;DR: This critical review presents the current understanding of DIET via conductive materials for methane production, summarizes the relevant studies published to date, and analyzes these studies with regard to conductive Materials, substrates, inocula, performance, and microorganisms.
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Methane Production and Conductive Materials: A Critical Review
TL;DR: An overview of the effect of several iron-based and carbon-based CM in bioengineered systems, focusing on the improvement in methane production and in microbial communities' changes is presented.
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Advances towards understanding and engineering direct interspecies electron transfer in anaerobic digestion
Sajib Barua,Bipro Ranjan Dhar +1 more
TL;DR: A state-of-art review focusing on the fundamental mechanisms, key microbial players, the role of electrical conductivity, the effectiveness of various conductive additives, the significance of substrate characteristics and organic loading rates in promoting DIET in anaerobic digestion is presented.
References
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Visualization of charge propagation along individual pili proteins using ambient electrostatic force microscopy
TL;DR: It is shown that electrostatic force microscopy can be used to directly visualize charge propagation along pili of Geobacter sulfurreducens with nanometre resolution and under ambient conditions, suggesting that the pil of G. sulfurringucens function as molecular wires with transport via delocalized charges, rather than the hopping mechanism that is typical of biological electron transport.
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Potential for direct interspecies electron transfer in an electric-anaerobic system to increase methane production from sludge digestion
TL;DR: This study revealed for the first time that DIET might be the important mechanism on the methanogenesis of bioelectrochemical system, but provided a new method to enhance DIET by means of bioelectric enrichment of Geobacter species.
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Desulfovibrio magneticus sp. nov., a novel sulfate-reducing bacterium that produces intracellular single-domain-sized magnetite particles.
TL;DR: A novel type of dissimilatory sulfate-reducing bacterium, designated strain RS-1T, capable of producing intracellular magnetite particles (magnetosomes) was isolated from freshwater sulfide-rich sediments, and Phylogenetic analysis based on 16S rDNA sequences revealed that it is a member of the genus Desulfovibrio.
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Conductive iron oxides accelerate thermophilic methanogenesis from acetate and propionate.
TL;DR: It is suggested that supplementation of magnetite induce electric syntrophy between organic acid-oxidizing bacteria and methanogenic archaea and accelerate methanogenesis even under thermophilic conditions, which would provide a possibility for the achievement of stably operating thermophile anaerobic digestion systems with high efficiency.
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The biostimulation of anaerobic digestion with (semi)conductive ferric oxides: their potential for enhanced biomethanation.
TL;DR: The overall results suggest the potential of biostimulation with (semi)conductive ferric oxides to enhance the rate and efficiency of the biomethanation of organic wastes.