Microbial electrosynthesis from carbon dioxide: performance enhancement and elucidation of mechanisms

Jourdin, Ludovic

doi:10.14264/uql.2015.877

Cited by 4 publications

(12 citation statements)

References 241 publications

(478 reference statements)

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“…Fermentation 2021, 7, x FOR PEER REVIEW 3 of 38 technology has gained much popularity, it revolves around e − transfer and energy transformation. Researchers are now exploiting the design of electrochemical devices, electrodes, catalyst and separator material optimisation and screening of electroactive microorganisms [2,16,[28][29][30][31].…”

Section: Bioelectrochemical System (Bes)mentioning

confidence: 99%

“…Production of organic compounds from MES is considered to be an effective technique for the inception of various beneficial multi-carbon reduced end-products like acetate and butyrate by the valorisation of low-value CO 2 . Further, bio-production dependent on CO 2 is advantageous, as it uses less arable land and freshwater resources, has low CO 2 emissions, no major nutritional supplementation is needed, has excess substrate availability and lastly, chemical bonds can be employed for the storage of excess electrical energy [8,15,16]. Although MES technology is still in its infancy, it has been demonstrated as a promising green alternative for CO 2 sequestration and bioelectrosynthesis of high-valued multi-carbon organic compounds.…”

Section: Introductionmentioning

confidence: 99%

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Valorisation of CO2 into Value-Added Products via Microbial Electrosynthesis (MES) and Electro-Fermentation Technology

et al. 2021

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Microbial electrocatalysis reckons on microbes as catalysts for reactions occurring at electrodes. Microbial fuel cells and microbial electrolysis cells are well-known in this context; both prefer the oxidation of organic and inorganic matter for producing electricity. Notably, the synthesis of high energy-density chemicals (fuels) or their precursors by microorganisms using bio-cathode to yield electrical energy is called Microbial Electrosynthesis (MES), giving an exceptionally appealing novel way for producing beneficial products from electricity and wastewater. This review accentuates the concept, importance and opportunities of MES, as an emerging discipline at the nexus of microbiology and electrochemistry. Production of organic compounds from MES is considered as an effective technique for the generation of various beneficial reduced end-products (like acetate and butyrate) as well as in reducing the load of CO2 from the atmosphere to mitigate the harmful effect of greenhouse gases in global warming. Although MES is still an emerging technology, this method is not thoroughly known. The authors have focused on MES, as it is the next transformative, viable alternative technology to decrease the repercussions of surplus carbon dioxide in the environment along with conserving energy.

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Section: Bioelectrochemical System (Bes)mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Valorisation of CO2 into Value-Added Products via Microbial Electrosynthesis (MES) and Electro-Fermentation Technology

et al. 2021

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“…Lab-scale experiments did not enable us to predict the lifetime of the BES materials. Previous studies have shown that, depending on the operating conditions, carbon-based electrodes can last more than five years (McCreery 2008;Jourdin 2015;Yang et al 2016). As there is no real consensus, a lifetime of ten years was chosen in order to maximise the production rate.…”

Section: Inventory and Modelling Of The Coupling Of Bioelectrosynthesmentioning

confidence: 99%

Life cycle assessment of a bioelectrochemical system as a new technological platform for biosuccinic acid production from waste

Foulet¹,

Bouchez²,

Quéméner

et al. 2018

Environ Sci Pollut Res

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Waste management is a key environmental and socioeconomic issue. Environmental concerns are encouraging the use of alternative resources and lower emissions to air, water and soil. Innovative technologies to deal with waste recovery that produce marketable bio-products are emerging. Bioelectrochemical synthesis systems (BESs) are based on the primary principle of transforming organic waste into added-value products using microorganisms to catalyse chemical reactions. This technology is at the core of a research project called BIORARE (BIoelectrosynthesis for ORganic wAste bioREfinery), an interdisciplinary project that aims to use anaerobic digestion as a supply chain to feed a BES and produce target biomolecules. This technology needs to be driven by environmental strategies. Life Cycle Assessment (LCA) was used to evaluate the BIORARE concept based on expert opinion and prior experiments for the production of biosuccinic acid and waste management. A multidisciplinary approach based on biochemistry and process engineering expertise was used to collect the inventory data. The BES design and the two-step anaerobic digestion process have many potential impacts on air pollution or ecotoxicity-related categories. The comparison of the BIORARE concept with conventional fermentation processes and a water-fed BES technology demonstrated the environmental benefit resulting

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“…b (Desloover et al 2012). c (Jourdin 2015). The capital cost was converted to AUD dollars at a rate of 1.5 AU$ =1 EURO (17/05/2017).…”

Section: Estimated Operational Cost Of Bes (Opex)mentioning

confidence: 99%

Bio-Electrochemical process for Metal and Sulfur Recovery from Acid Mine Drainage

Zamora¹,

Alonso²

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Water recycling and resource recovery from acid mine drainage (AMD) are increasingly being regarded as desirable practices with direct benefits for the environment and the operational and economic viability of the resources sector.This thesis proves the concept of a novel bioelectrochemical system (BES) for the direct electrode-driven resource recovery and practically permanent AMD treatment. The technology consists of a two-cell bioelectrochemical setup to enable the removal of sulfate from the ongoing reduction-oxidation sulfur cycle, thereby also reducing salinity, without external addition of chemicals.In particular, the goals of this thesis are: (i) to enrich a sulfate reducing bacterial community capable of directly utilising a carbon based cathode as electron donor for autotrophic sulfate reduction, or via bioelectrochemically-produced H 2 ; (ii) to elucidate the electron flux pathways of autotrophic sulfate reduction and microbial interactions in cathodic mixed cultures; (iii) to develop a high-rate sulfate reducing bioelectrochemical reactor based on high surface area electrode materials; (iv) to design and implement a combined chemical-free bioelectrochemical process that enables the sulfur, metal and water recovery from AMD.In order to elucidate whether cathodes can effectively release electrons and act as the only electron donor to support sulfate reduction process, the effect of cathode potential and inoculum source were evaluated using electrochemical tools, including the recording of chronoamperometry and cyclic/linear sweep voltammetry (Chapter 5). Electrochemical and off-gas analysis coupled to liquid phase sampling was carried out to determine the electron fluxes from the electrode to the final electron acceptor (sulfate) during autotrophic sulfate reduction (Chapter 6). Fluorescence in situ hybridization (FISH) and digital image analysis (DAIME) of the microbial communities in z-stack confirmed the microbial stratification. After obtaining a well-functioning biocathode for autotrophic sulfate reduction, its performance was experimentally optimised in terms of high-surface area electrode materials, like multi-wall carbon nanotubes on reticulated vitreous carbon (MWCNT-RVC) and carbon granules (CG) (Chapter 7). Finally, a novel BES was tested for AMD treatment , outcompeting methanogens and homoacetogens for the hydrogen without the need to add chemical inhibitors.The findings of this thesis show that inexpensive CG can achieve higher current-tosulfide efficiencies at lower power consumption than the nano-modified three-dimensional MWCNT-RVC. Sequencing analysis of the 16S rRNA gene on day 58 revealed that MWCNT-RVC retained the bacteria and archaea population from the inoculum, while CG electrode surface was able to select for bacteria over archaea.The feasibility to integrate a two-stage BES was proven with a lab-scale setup for AMD treatment. Using AMD, the BES operation enhanced the sulfate reduction rate ( The solid metal-sludge was 2 times less voluminous and 9 times more readily s...

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Microbial electrosynthesis from carbon dioxide: performance enhancement and elucidation of mechanisms

Cited by 4 publications

References 241 publications

Valorisation of CO2 into Value-Added Products via Microbial Electrosynthesis (MES) and Electro-Fermentation Technology

Valorisation of CO2 into Value-Added Products via Microbial Electrosynthesis (MES) and Electro-Fermentation Technology

Life cycle assessment of a bioelectrochemical system as a new technological platform for biosuccinic acid production from waste

Bio-Electrochemical process for Metal and Sulfur Recovery from Acid Mine Drainage

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