Carbon-based materials as highly efficient catalysts for the hydrogen evolution reaction in microbial electrolysis cells: Mechanisms, methods, and perspectives

Chemical Engineering Journal, Год журнала: 2023, Номер 471, С. 144670 - 144670

Опубликована: Июль 11, 2023

Язык: Английский

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Research progress and trend of antibiotics degradation by electroactive biofilm: A review

Journal of Water Process Engineering, Год журнала: 2024, Номер 58, С. 104846 - 104846

Опубликована: Янв. 20, 2024

Язык: Английский

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Microbial electrosynthesis from CO2 reaches productivity of syngas and chain elongation fermentations

Trends in biotechnology, Год журнала: 2024, Номер 42(11), С. 1503 - 1522

Опубликована: Авг. 8, 2024

Sustainable production of carbon-based products is urgently needed.A novel directed flow-through microbial electrosynthesis (MES) reactor was designed and characterized for carbon dioxide (CO2) conversion to C2–C6 carboxylates.Three-times denser biofilm, volumetric current density, productivity were achieved compared with the state art.Biomass-specific rates maintained over more than 200 days, yet still an order magnitude lower that by acetogens in syngas fermentation.Volumetric MES comparable from fermentation.Clostridium luticellarii Eubacterium limosum dominant species. Microbial carboxylic acids CO2 electricity has been validated a decade, now reaching Technology Readiness Levels 3/4 laboratory settings. However, process optimization needed before demonstrating industrial prototype. Key challenges full-scale implementation include ensuring stability. Critical areas investigate demonstrate are: (i) impact feed stream composition properties; (ii) short- long-term effects renewable supply intermittency; (iii) flexibility operations integrated process, including up- downstream processes. Moreover, comprehensive market analysis required each target product. For instance, hexanoic acid, which serves as precursor nylon, plasticizers, lubricants, pharmaceuticals, fragrances, fuels, animal feed, necessitates development business models consider complete chains systems. Carbon-based are essential society, producing them fossil fuels unsustainable. Microorganisms have ability take up electrons solid electrodes convert valuable chemicals. higher productivities energy efficiencies reach viability can make technology transformative. Here, we show how biofilm-based porous cathode electrochemical system continuously reduce even-chain 248 days. We threefold biofilm concentration, art. Most notably, (VP) resembles those laboratory-scale (CO-H2-CO2) fermentation chain elongation fermentation. This work highlights key design parameters efficient electricity-driven reduction. There need room improve electrode colonization microbe-specific kinetics scale technology. Graphical abstract

Язык: Английский

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Nanoparticle-Driven cathode for hydrogen production in microbial electrolysis cell: Synergies and impact

Fuel, Год журнала: 2025, Номер 393, С. 135020 - 135020

Опубликована: Март 11, 2025

Язык: Английский

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Stability improvement and the mechanism of a microbial electrolysis cell biocathode for treating wastewater containing sulfate by quorum sensing

Chemical Engineering Journal, Год журнала: 2022, Номер 455, С. 140597 - 140597

Опубликована: Ноя. 26, 2022

Язык: Английский

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Co3O4/C derived from ZIF-67 cathode enhances the microbial electrosynthesis of acetate from CO2

International Journal of Hydrogen Energy, Год журнала: 2024, Номер 58, С. 426 - 432

Опубликована: Янв. 24, 2024

Язык: Английский

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Comparing the performance of fluidized and fixed granular activated carbon beds as cathodes for microbial electrosynthesis of carboxylates from CO2

Bioresource Technology, Год журнала: 2024, Номер 403, С. 130896 - 130896

Опубликована: Май 24, 2024

Microbial electrosynthesis (MES) can use renewable electricity to power microbial conversion of carbon dioxide (CO2) into carboxylates. To ensure high productivities in MES, good mass transfer must be ensured, which could accomplished with fluidization granular activated (GAC). In this study, fluidized and fixed GAC bed cathodes were compared. Acetate production rate current density 42 % 47 lower, respectively, than reactors. Although similar consortium dominated by Eubacterium Proteiniphilum was observed, lowest biomass quantity measured indicating higher specific acetate rates compared bed. Furthermore, charge efficiency the highest recovery carboxylates beds enhanced hydrogen evolution need for enhancing CO2 feeding enable acetate. Overall, have MES beds.

Язык: Английский

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Hydrogen production in microbial electrolysis cell and reactor digestate valorization for biochar – a noble attempt towards circular economy

International Journal of Hydrogen Energy, Год журнала: 2023, Номер 52, С. 649 - 668

Опубликована: Авг. 8, 2023

Язык: Английский

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Microbial electrosynthesis of acetate from CO2 in three-chamber cells with gas diffusion biocathode under moderate saline conditions

Environmental Science and Ecotechnology, Год журнала: 2023, Номер 16, С. 100261 - 100261

Опубликована: Март 21, 2023

The industrial adoption of microbial electrosynthesis (MES) is hindered by high overpotentials deriving from low electrolyte conductivity and inefficient cell designs. In this study, a mixed consortium originating an anaerobic digester operated under saline conditions (∼13 g L-1 NaCl) was adapted for acetate production bicarbonate in galvanostatic (0.25 mA cm-2) H-type cells at 5, 10, 15, or 20 NaCl concentration. acetogenic communities were successfully enriched only 5 10 NaCl, revealing inhibitory threshold about 6 Na+. planktonic then used as inoculum 3D printed, three-chamber equipped with gas diffusion biocathode. fed CO2 galvanostatically 1.00 cm-2). highest rate 55.4 m-2 d-1 (0.89 d-1), 82.4% Coulombic efficiency, obtained concentration 1 cm-2 applied current, achieving average 44.7 kg MWh-1. Scanning electron microscopy 16S rRNA sequencing analysis confirmed the formation cathodic biofilm dominated Acetobacterium sp. Finally, three printed hydraulically connected series to simulate MES stack, three-fold rates than single 0.25 cm-2. This confirms that are efficient scalable technology bio-electro recycling moderate (5 can help reduce their power demand while preserving activity acetogens.

Язык: Английский

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Advanced Electroanalysis for Electrosynthesis

ACS Organic & Inorganic Au, Год журнала: 2023, Номер 4(2), С. 141 - 187

Опубликована: Ноя. 29, 2023

Electrosynthesis is a popular, environmentally friendly substitute for conventional organic methods. It involves using charge transfer to stimulate chemical reactions through the application of potential or current between two electrodes. In addition electrode materials and type reactor employed, strategies controlling have an impact on yields, product distribution, reaction mechanism. this Review, recent advances related electroanalysis applied in electrosynthesis were discussed. The first part study acts as guide that emphasizes foundations electrosynthesis. These essentials include instrumentation, selection, cell design, methodologies. Then, electroanalytical techniques organic, enzymatic, microbial are illustrated with specific cases studied literature. To conclude, discussion future possibilities intend advance academic industrial areas presented.

Язык: Английский

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