Bioelectrochemical system platform for sustainable environmental remediation and energy generation

Wang, Heming; Luo, Haiping; Fallgren, Paul H.; Jin, Song; Ren, Zhiyong Jason

doi:10.1016/j.biotechadv.2015.04.003

Cited by 259 publications

(96 citation statements)

References 145 publications

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“…Recently, MFCs have been widely used as an alternative technology due to the advantages of higher contaminant removal efficiency than the conventional biological treatment techniques, bioelectricity generation, no need for energy and carbon addition, and less excess sludge generation (Jia et al, 2008;Kim et al, 2007;Kondaveeti and Min, 2013;Rahimnejad et al, 2015;Wang et al, 2015;Wu et al, 2015). MFCs have the potential of being applied in bioenergy generation, wastewater treatment, and synthesis of valuable added materials (ElMekawy et al, 2015;Ryu et al, 2013;Zhang et al, 2014a).…”

Section: Introductionmentioning

confidence: 99%

Performance and recent improvement in microbial fuel cells for simultaneous carbon and nitrogen removal: A review

Sun

Zhuang

et al. 2016

Journal of Environmental Sciences

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Section: Introductionmentioning

confidence: 99%

Performance and recent improvement in microbial fuel cells for simultaneous carbon and nitrogen removal: A review

Sun

Zhuang

et al. 2016

Journal of Environmental Sciences

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“…This lack of specificity enables the application of these microorganisms in so-called bioelectrochemical systems (BESs), in which they catalyze direct or indirect electron transfer to electrode surfaces (6)(7)(8). Recently, many studies were carried out to expand the application of BESs and increase the efficiency of electricity production (9)(10)(11). One strategy is to understand and steer the microbial community on electrode surfaces (12).…”

mentioning

confidence: 99%

Resilience, Dynamics, and Interactions within a Model Multispecies Exoelectrogenic-Biofilm Community

Prokhorova

Sturm-Richter

Doetsch

et al. 2017

Appl Environ Microbiol

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Anode-associated multispecies exoelectrogenic biofilms are essential for the function of bioelectrochemical systems (BESs). The individual activities of anodeassociated organisms and physiological responses resulting from coculturing are often hard to assess due to the high microbial diversity in these systems. Therefore, we developed a model multispecies biofilm comprising three exoelectrogenic proteobacteria, Shewanella oneidensis, Geobacter sulfurreducens, and Geobacter metallireducens, with the aim to study in detail the biofilm formation dynamics, the interactions between the organisms, and the overall activity of an exoelectrogenic biofilm as a consequence of the applied anode potential. The experiments revealed that the organisms build a stable biofilm on an electrode surface that is rather resilient to changes in the redox potential of the anode. The community operated at maximum electron transfer rates at electrode potentials that were higher than 0.04 V versus a normal hydrogen electrode. Current densities decreased gradually with lower potentials and reached half-maximal values at Ϫ0.08 V. Transcriptomic results point toward a positive interaction among the individual strains. S. oneidensis and G. sulfurreducens upregulated their central metabolisms as a response to cultivation under mixed-species conditions. G. sulfurreducens was detected in the planktonic phase of the bioelectrochemical reactors in mixed-culture experiments but not when it was grown in the absence of the other two organisms.IMPORTANCE In many cases, multispecies communities can convert organic substrates into electric power more efficiently than axenic cultures, a phenomenon that remains unresolved. In this study, we aimed to elucidate the potential mutual effects of multispecies communities in bioelectrochemical systems to understand how microbes interact in the coculture anodic network and to improve the community's conversion efficiency for organic substrates into electrical energy. The results reveal positive interactions that might lead to accelerated electron transfer in mixedspecies anode communities. The observations made within this model biofilm might be applicable to a variety of nonaxenic systems in the field.KEYWORDS bioelectrochemical systems, Shewanella, Geobacter, exoelectrogenic biofilm, transcriptome analysis S everal microorganisms have the ability to transfer respiratory electrons to an extracellular electron acceptor. Extracellular respiration is highly relevant for a number of biogeochemical cycles, because these electron transport chains were developed for reducing metal oxides as well as for nonmembrane-permeable environmental electron shuttles, such as humic substances (1-4). It is likely that the selective pressure to evolve terminal reductases that catalyze electron transfer to solid electron

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“…Bioelectrochemical systems (BES), employing electrochemically active microorganisms to catalyze oxidative or reductive reactions in the anode or cathode respectively, have attracted a considerable amount of attentions in recent decades (Pandey et al, 2016;Pant et al, 2010;Wang et al, 2015;Yun et al, 2017a), especially its merits on the bioelectrodegradation of various organic pollutants including nitro-, azo-, halo-aromatics and antimicrobial agents based on the microbial electrode-respiration process (Cui et al, 2014Feng et al, 2015;Gao et al, 2016;Jiang et al, 2016a;Li et al, 2016;Liang et al, 2013;Sun et al, 2013;Wang et al, 2011Wang et al, , 2016Zhang et al, 2017). Generally, operational factors could impact the catalytic efficiency and functioning stability of abiotic cathode/biocathode reactors (e.g.…”

Section: Introductionmentioning

confidence: 99%

Response of antimicrobial nitrofurazone-degrading biocathode communities to different cathode potentials

Kong

Yun

Cui

et al. 2017

Bioresource Technology

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Bioelectrochemical system platform for sustainable environmental remediation and energy generation

Cited by 259 publications

References 145 publications

Performance and recent improvement in microbial fuel cells for simultaneous carbon and nitrogen removal: A review

Performance and recent improvement in microbial fuel cells for simultaneous carbon and nitrogen removal: A review

Resilience, Dynamics, and Interactions within a Model Multispecies Exoelectrogenic-Biofilm Community

Response of antimicrobial nitrofurazone-degrading biocathode communities to different cathode potentials

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