Abstract:OATAO is an open access repository that collects the work of Toulouse researchers and makes it freely available over the web where possible. This is an author-deposited version published in : http://oatao.univ-toulouse.fr/ Eprints ID : 13877
b s t r a c tReversible bioelectrodes were designed by alternating acetate and oxygen supply. It was demonstrated that the protons produced and accumulated inside the biofilm during the anodic phase greatly favored the oxygen reduction reaction when the electrode was swit… Show more
“…Jeremiasse et al (2012) showed that a mixed culture biofilm could be firstly grown as an acetate-oxidizing bioanode and afterwards switched to a hydrogen-producing biocathode, which certainly decreased the start-up time (>2 times faster). Mixed culture biofilms able to both catalyze organic matter oxidation and oxygen or nitrate reduction have been also described (Blanchet et al, 2014;Cheng et al, 2012Cheng et al, , 2010. However, to the best of the authors' knowledge, the main electron transfer mechanism governing such "switchable" electroactive biofilms has not been elucidated yet.…”
“…Jeremiasse et al (2012) showed that a mixed culture biofilm could be firstly grown as an acetate-oxidizing bioanode and afterwards switched to a hydrogen-producing biocathode, which certainly decreased the start-up time (>2 times faster). Mixed culture biofilms able to both catalyze organic matter oxidation and oxygen or nitrate reduction have been also described (Blanchet et al, 2014;Cheng et al, 2012Cheng et al, , 2010. However, to the best of the authors' knowledge, the main electron transfer mechanism governing such "switchable" electroactive biofilms has not been elucidated yet.…”
“…The implementation of microbial anodes and microbial cathodes in a unique electrolyte is completely feasible especially since the demonstration of several electronic exchange mechanisms between reversible electroactive biofilms and electrodes [3,6,44]. These "reversible electrodes" are mostly microbial anodes firstly formed in complex environments (wastewater, activated sludge, garden compost, etc) that under depletion of reducers (e.g.…”
“…The focus on those particular phyla is consistent with previous studies (e.g. [17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32][33][34][35]) when Proteobacteria and Firmicutes were the predominant ones constituting the biofilms developed in the microbial electrochemical systems.…”
Section: Bacterial Community Analysismentioning
confidence: 64%
“…Indeed, certain bacterial species, such as Shewanella oneidensis or Pseudomonas aeruginosa, are capable of an extracellular electron transfer that can reach the bacteria composing the electroactive biofilm thanks to secondary electron shuttles (those mediators are oxidized with the cytochromes inserted into the external bacterial membrane, and reduced either directly entering in contact with the working electrode, or with other bacterial cytochromes into the biofilm) [26][27][28][29][30][31].…”
Section: Electrochemical Data Analysismentioning
confidence: 99%
“…The second calculator, called Thetayc calculator, additionally takes into account the OTUs' relative abundance. It was got as follows: S T is the total number of OTUs in communities A and B, a i the relative abundance of OTU i in community A and b i the relative abundance of OTU i in community B. Additionally, Simpson's diversity index (D) was calculated [28]. This index allows measuring the diversity, taking into account both species richness and an evenness of abundance among the species.…”
Section: High-throughput Data Statistical Analysismentioning
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.