Electro-Fermentation – Merging Electrochemistry with Fermentation in Industrial Applications

Schievano, Andrea; Sciarria, Tommy Pepè; Vanbroekhoven, Karolien; Wever, Heleen De; Puig, Sebastià; Andersen, Stephen; Rabaey, Korneel; Pant, Deepak

doi:10.1016/j.tibtech.2016.04.007

Cited by 234 publications

(149 citation statements)

References 77 publications

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“…Depending upon the number of compartments and operation type, EF can be categorized into single chambered, double-chambered, tubular, stacked, baffled, up-flow system, etc. [24,[31][32][33][34][35][36][37]. On the other hand, with different modifications, EFs can further be categorized into bioelectrochemical treatment system (BET), microbial desalination system (MDS), microbial electrolysis cell (MEC), and bioelectrochemical system (BES) extending its utility [24,[38][39][40][41].…”

Section: Microbial Electro-fermentation: An Alternative Methods Of Fermentioning

confidence: 99%

Electro-Fermentation in Aid of Bioenergy and Biopolymers

et al. 2018

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Abstract:The soaring levels of industrialization and rapid progress towards urbanization across the world have elevated the demand for energy besides generating a massive amount of waste. The latter is responsible for poisoning the ecosystem in an exponential manner, owing to the hazardous and toxic chemicals released by them. In the past few decades, there has been a paradigm shift from "waste to wealth", keeping the value of high organic content available in the wastes of biological origin. The most practiced processes are that of anaerobic digestion, leading to the production of methane. However; such bioconversion has limited net energy yields. Industrial fermentation targeting value-added bioproducts such as-H 2 , butanediols; polyhydroxyalkanoates, citric acid, vitamins, enzymes, etc. from biowastes/lignocellulosic substrates have been planned to flourish in a multi-step process or as a "Biorefinery". Electro-fermentation (EF) is one such technology that has attracted much interest due to its ability to boost the microbial metabolism through extracellular electron transfer during fermentation. It has been studied on various acetogens and methanogens, where the enhancement in the biogas yield reached up to 2-fold. EF holds the potential to be used with complex organic materials, leading to the biosynthesis of value-added products at an industrial scale.

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Section: Microbial Electro-fermentation: An Alternative Methods Of Fermentioning

confidence: 99%

Electro-Fermentation in Aid of Bioenergy and Biopolymers

et al. 2018

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“…using conventional substrates (e.g., glucose; Rabaey et al 2011;Schievano et al 2016). These all showed electron transfer-assisted bioelectrochemical activities would play crucial roles for biorefinery/bioenergy applications.…”

Section: Introductionmentioning

confidence: 94%

“…H 2 / H + and redox mediators could act as electron shuttles to stimulate oxidative/reductive fermentation of suspended microbial cultures. As capabilities of ESs strongly affected Schievano et al 2016). Fermentation systems could be in redox rebalance to have value product generation via different metabolic routes for energy recycling via augmentation of electron shuttles, reduction of electron transfer resistance, improvement of membrane for ion separation, and modification of electrode materials.…”

Section: Future Directions and Prospectivementioning

confidence: 99%

Electron transport phenomena of electroactive bacteria in microbial fuel cells: a review of Proteus hauseri

Hsueh

Chen

2017

Bioresour. Bioprocess.

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This review tended to decipher the expression of electron transfer capability (e.g., biofilm formation, electron shuttles, swarming motility, dye decolorization, bioelectricity generation) to microbial fuel cells (MFCs). As mixed culture were known to perform better than pure microbial cultures for optimal expression of electrochemically stable activities to pollutant degradation and bioenergy recycling, Proteus hauseri isolated as a "keystone species" to maintain such ecologically stable potential for power generation in MFCs was characterized. P. hauseri expressed outstanding performance of electron transfer (ET)-associated characteristics [e.g., reductive decolorization (RD) and bioelectricity generation (BG)] for electrochemically steered bioremediation even though it is not a nanowire-generating bacterium. This review tended to uncover taxonomic classification, genetic or genomic characteristics, enzymatic functions, and bioelectricity-generating capabilities of Proteus spp. with perspectives for electrochemical practicability. As a matter of fact, using MFCs as a tool to evaluate ET capabilities, dye decolorizer(s) could clearly express excellent performance of simultaneous bioelectricity generation and reductive decolorization (SBG and RD) due to feedback catalysis of residual decolorized metabolites (DMs) as electron shuttles (ESs). Moreover, the presence of reduced intermediates of nitroaromatics or DMs as ESs could synergistically augment efficiency of reductive decolorization and power generation. With swarming mobility, P. hauseri could own significant biofilm-forming capability to sustain ecologically stable consortia for RD and BG. This mini-review evidently provided lost episodes of great significance about bioenergysteered applications in myriads of fields (e.g., biodegradation, biorefinery, and electro-fermentation). Keywords

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“…Fermentation utilises microorganisms to convert organic compounds to acids, gases, or alcohols, and has been utilised for food preservation increasing product storage and stability. Fermentations now occur on industrial-level scales producing biomass, primary and secondary metabolites, enzymes, recombinant products, and products for consumption 13 . Industrial fermentation processes are often constrained due to the need for sterility, the use of specific strains, substrate selectivity, maintenance of redox balance, environmental control, and product recovery 14 .…”

Section: Fermentation and Electronsmentioning

confidence: 99%

Plugging in microbial metabolism for industrial applications

Bell

Franks

2017

Microbiol. Aust.

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The ability of electric microbes to electrically interact with electrodes is opening up a number of possibilities with industrial applications. Microbes are able to utilise the electrode as an electron source to reduce CO2 for the production of organic compounds directly or produce H2 as a reducing equivalent for partner microbes for the production of commodity chemicals. Electrodes can also allow redox unbalanced fermentation processes to occur through the addition or subtraction of reducing equivalents that remove bottle necks in these pathways. Electrodes are also providing a physical refuge for electric microbes to maintain anaerobic fermenter stability. It can be expected that the role for electric microbes will continued to be expanded as part of industrial applications in the future.

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Electro-Fermentation – Merging Electrochemistry with Fermentation in Industrial Applications

Cited by 234 publications

References 77 publications

Electro-Fermentation in Aid of Bioenergy and Biopolymers

Electro-Fermentation in Aid of Bioenergy and Biopolymers

Electron transport phenomena of electroactive bacteria in microbial fuel cells: a review of Proteus hauseri

Plugging in microbial metabolism for industrial applications

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