Microbial characterization of anode-respiring bacteria within biofilms developed from cultures previously enriched in dissimilatory metal-reducing bacteria

Pierra, Mélanie; Carmona-Martínez, Alessandro A.; Trably, Eric; Godon, Jean‐Jacques; Bernet, Nicolas

doi:10.1016/j.biortech.2015.07.010

Cited by 27 publications

(12 citation statements)

References 15 publications

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“…These enrichment methods (being either electrochemical or chemical) make it possible targeting specific groups of efficient exoelectrogenic species such as Geobacteraceae [35][36][37]. This preliminary selection, controlled growth and acclimation of biocatalysts could have substantial practical advantage since besides the physiological state of the bacterial cells [38,39], the profile of the active microbial community developing on the anode during the start-up period is a factor that directly affects the MEC operation [40,41].…”

Section: Inoculum For Mec Start-upmentioning

confidence: 99%

Microbial electrochemical systems for sustainable biohydrogen production: Surveying the experiences from a start-up viewpoint

Kumar

Bakonyi

Zhen

et al. 2017

Renewable and Sustainable Energy Reviews

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The start-up of microbial electrohydrogenesis cells (MECs) is a key-step to realize efficient biohydrogen generation and adequate, long-term operation. This review paper deals with the lessons and experiences reported on the most important aspects of H 2 producing MEC start-up. The comprehensive survey covers the assessment and discussion of the main influencing factors and methods (e.g. inocula selection, enrichment, acclimation, operating conditions and cell architecture) that assist the design of MECs. This work intends to be a helpful guide for the interested readers about the strategies employed to successfully establish microbial electrochemical cells for sustainable biohydrogen production.

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Section: Inoculum For Mec Start-upmentioning

confidence: 99%

Microbial electrochemical systems for sustainable biohydrogen production: Surveying the experiences from a start-up viewpoint

Kumar

Bakonyi

Zhen

et al. 2017

Renewable and Sustainable Energy Reviews

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“…Application of an anode enrichment consortium reduces startup times significantly. While several studies have reported Desulfuromonas species to be abundant in microbial communities colonizing the anode [24,36,37], inoculation of MFCs with pure cultures of these bacteria has not been tested to date [38]. As proof-of-concept for such an approach, we have isolated a consortium of Desuformonas-enriched bacteria (Supplementary Figure S3) from an active anodic biofilm of an efficient operating MFC.…”

Section: Discussionmentioning

confidence: 99%

Specific Desulfuromonas Strains Can Determine Startup Times of Microbial Fuel Cells

et al. 2020

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Microbial fuel cells (MFCs) can generate electricity simultaneously with wastewater treatment. For MFCs to be considered a cost-effective treatment technology, they should quickly re-establish a stable electroactive microbial community in the case of system failure. In order to shorten startup times, temporal studies of anodic biofilm development are required, however, frequent sampling can reduce the functionality of the system due to electroactive biomass loss; therefore, on-line monitoring of the microbial community without interfering with the system’s stability is essential. Although all anodic biofilms were composed of Desulfuromonadaceae, MFCs differed in startup times. Generally, a Desulfuromonadaceae-dominated biofilm was associated with faster startup MFCs. A positive PCR product of a specific 16S rRNA gene PCR primer set for detecting the acetate-oxidizing, Eticyclidine (PCE)-dechlorinating Desulfuromonas group was associated with efficient MFCs in our samples. Therefore, this observation could serve as a biomarker for monitoring the formation of an efficient anodic biofilm. Additionally, we successfully enriched an electroactive consortium from an active anode, also resulting in a positive amplification of the specific primer set. Direct application of this enrichment to a clean MFC anode showed a substantial reduction of startup times from 18 to 3 days.

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“…However, previous studies on Geobacteraceae in paddy soils are mainly conducted in batch culture, in which microbes grow rapidly with high substrate concentrations (Yi et al 2013). These conditions cannot reflect the natural conditions well, where microbes usually grow slowly due to nutrient limitation (Pierra et al 2015). Meanwhile, those studies were conducted within an individual site, and it remains unclear how the distribution of Geobacteraceae is affected by geographic distance under field conditions.…”

Section: Introductionmentioning

confidence: 99%

Geographic distance and amorphous iron affect the abundance and distribution of Geobacteraceae in paddy soils in China

et al. 2016

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Microbial characterization of anode-respiring bacteria within biofilms developed from cultures previously enriched in dissimilatory metal-reducing bacteria

Cited by 27 publications

References 15 publications

Microbial electrochemical systems for sustainable biohydrogen production: Surveying the experiences from a start-up viewpoint

Microbial electrochemical systems for sustainable biohydrogen production: Surveying the experiences from a start-up viewpoint

Specific Desulfuromonas Strains Can Determine Startup Times of Microbial Fuel Cells

Geographic distance and amorphous iron affect the abundance and distribution of Geobacteraceae in paddy soils in China

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