Biogas Purification by Methane and Acetate Manufacturing DOI Creative Commons

J.A. Klein

GCB Bioenergy, Journal Year: 2024, Volume and Issue: 17(1)

Published: Dec. 17, 2024

ABSTRACT Wastewater treatment plants have two persistent financial and energetic drains, the carbon dioxide content of biogas, which limits its commercial sale, presence trace organics in wastewater effluent, damages aquatic ecosystem, like Great Barrier Reef. Biogas is a renewable methane resource that underutilized due to variable CO 2 (~40%). energy intensive purify limited by economy scale (> 8.85 GJ/h) large‐scale purification methods, thus small‐scale processes require development. Electrocatalytic microbes native been shown convert CH 4 acetate, however complete conversion intensive. Here we show low power bioelectrochemical fuel cell design biogas pipeline quality (98%), manufacture and/or remove organics, using HCO 3 − as transport charge carrier from dissolved through an anion exchange membrane. This decreased required separate on molar basis, resulting net recovery similar current industrial systems. Magnesium anode use resulted positive system. Tests evaluated influence cathode potential density, ion flux rates efficiencies production, optimization at −0.7 V versus standard hydrogen electrode (SHE). A techno‐economic analysis modeled return investment for scaled‐up production small streams are otherwise financially unrecoverable. Carbon sequestration methane, acetate solid fertilizers demonstrated profitable efficient waste‐to‐resource conversion.

Language: Английский

Exploring the synergy between microbial fuel cells and constructed wetlands in dairy waste water treatment: A comprehensive review DOI
Surender Singh, Anita Kirrolia,

Diksha Pannu

et al.

Journal of Water Process Engineering, Journal Year: 2025, Volume and Issue: 71, P. 107211 - 107211

Published: Feb. 11, 2025

Language: Английский

Citations

0
Renewable Hydrogen Production and Storage Via Enzymatic Interconversion of CO2 and Formate with Electrochemical Cofactor Regeneration DOI Creative Commons
Eleftheria Sapountzaki, Ulrika Rova, Paul Christakopoulos

et al.

ChemSusChem, Journal Year: 2023, Volume and Issue: 16(17)

Published: May 11, 2023

Abstract The urgent need to reduce CO 2 emissions has motivated the development of capture and utilization technologies. An emerging application is transformation into storage chemicals for clean energy carriers. Formic acid (FA), a valuable product reduction, an excellent hydrogen carrier. conversion FA, followed by H release from are conventionally chemically catalyzed. Biocatalysts offer highly specific less energy‐intensive alternative. formate catalyzed dehydrogenase (FDH), which usually requires cofactor function. Several FDHs have been incorporated in bioelectrochemical systems where produced biocathode electrochemically regenerated. production also several microorganisms possessing either hydrogenlyase or hydrogen‐dependent reductase complexes. Combination these two processes can lead ‐recycling cycle production, storage, with potentially lower environmental impact than conventional methods.

Language: Английский

Citations

9
Novel electrochemical strategies for the microbial conversion of CO2 into biomass and volatile fatty acids using a fluid‐like bed electrode in a three‐phase reactor DOI Creative Commons
María Victoria Llorente, Sara Tejedor‐Sanz, Antonio Berná

et al.

Microbial Biotechnology, Journal Year: 2024, Volume and Issue: 17(1)

Published: Jan. 1, 2024

Abstract Microbial electrosynthesis (MES) constitutes a bioelectrochemical process where bacteria uptake electrons extracellularly from polarized electrode to incorporate them into their anabolic metabolism. However, the efficiency of current MES reactor designs can be lower than expected due limitations regarding electron transfer and mass transport. One most promising bioreactor configurations overcome these bottlenecks is Electrochemical Fluidized Bed Reactor (ME‐FBR). In this study, microbial CO 2 fixation investigated for first time in ME‐FBR operated as 3‐phase (solid–liquid–gas). An electroconductive carbon bed, acting working electrode, was fluidized with gas at different potentials (−0.6, −0.8 −1 V vs. Ag/AgCl) so it could act an donor (biocathode). Under potentials, were evaluated. Autotrophic electroactive microorganisms anaerobic wastewater enriched presence 2‐bromoethanosulfonic acid (BES) inhibit growth methanogens. Cyclic voltammetry analysis revealed interaction between cathode. Furthermore, volatile fatty acids like propionate, formate acetate detected culture supernatant. Acetate production had maximum rate ca. 1 g L day . Planktonic cell biomass produced under continuous values high 0.7 dry weight. Overall, study demonstrates feasibility employing gaseous substrates electricity energy source generating carboxylic acids.

Language: Английский

Citations

3
Microbial models for biocathodic electrochemical CO2 transformation: A comprehensive review on pure cultures DOI Creative Commons
Lluı́s Bañeras, Álvaro Cabeza Sánchez, Elisabet Perona-Vico

et al.

Bioresource Technology Reports, Journal Year: 2024, Volume and Issue: 25, P. 101766 - 101766

Published: Jan. 30, 2024

Electroactive microorganisms, either used as pure cultures or mixed populations in complex communities, play a key role microbial electrochemical technologies (MET) and are especially relevant electrosynthesis (MES). Although most MES research focuses on anaerobic organisms, the exploration of aerobic chemolithoautotrophs becomes may help mitigating adverse effect evolution oxygen. Critical avenues for future development involve increasing mechanistic characterizations reactors enhancing understanding thermodynamics energy balance electrode-cell electron transfer. In this review, we primarily concentrate exploring discussing advancements findings field models MES, approximate to model formulation. We highlight potential benefits using axenic bacterial known composition way identify main knowledge gaps further predictive modelling.

Language: Английский

Citations

3
Effect of bicarbonate on hydrogen generation by Zero-Valent iron and its impact on generation of acetic acid by seven different inocula DOI

Charis G. Samanides,

Ioannis Vyrides

Bioresource Technology, Journal Year: 2024, Volume and Issue: 406, P. 131004 - 131004

Published: June 16, 2024

Language: Английский

Citations

3
Oxygen In The Mix: Is Oxic Microbial Electrosynthesis A Potential Alternative For Biomass Production? DOI Creative Commons
Johannes Eberhard Reiner, Benjamin Korth, Miriam Edel

et al.

ChemElectroChem, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 6, 2024

Abstract Oxic microbial electrosynthesis (oMES) allows the utilization of renewable electricity and industrial gas streams containing CO 2 O for biomass production by cultivating aerobic, autotrophic, hydrogen‐oxidizing bacteria, commonly known as Knallgas bacteria. oMES is likely not a direct competitor to conventional anoxic harnessing aerobic bacteria depends on energetically inefficient assimilatory reduction pathways. However, it might be complementary approach classical from perspective limited land use availability cheap energy. The best characterized bacterium Cupriavidus necator . Extensively studied lithoautotrophic host, C. already offers broad arsenal genetic tools. In contrast, mechanistical knowledge about recently discovered Kyrpidia spormannii limited, but this species shows remarkable growth when cultivated cathodic biofilm in bioelectrochemical systems. addition, first experiments indicate low energy demand production, which order magnitude fermentation with or heterotrophic methanotrophic technologies. Still, many aspects electrochemical cultivation K. need better understood rigorously improved competitive technology making, including electron transfer kinetics, conditions, mass balances, reactor design.

Language: Английский

Citations

2
Boosting ethanol production rates from carbon dioxide in MES cells under optimal solventogenic conditions DOI
Meritxell Romans-Casas, Elisabet Perona-Vico, Paolo Dessì

et al.

The Science of The Total Environment, Journal Year: 2022, Volume and Issue: 856, P. 159124 - 159124

Published: Sept. 27, 2022

Language: Английский

Citations

11
Potential and challenge in accelerating high-value conversion of CO2 in microbial electrosynthesis system via data-driven approach DOI

Jiasheng Jin,

Yang Wu, Peiyu Cao

et al.

Bioresource Technology, Journal Year: 2024, Volume and Issue: 412, P. 131380 - 131380

Published: Aug. 29, 2024

Language: Английский

Citations

1
Intensification of bioprocesses – definition, examples, challenges and future directions DOI
Lukas Hartmann, Thomas Krieg, Dirk Holtmann

et al.

Physical Sciences Reviews, Journal Year: 2024, Volume and Issue: 9(10), P. 3273 - 3287

Published: Feb. 28, 2024

Abstract Strategies to reduce cost and emission profiles are becoming increasingly important for the development of affordable sustainable bio-based production. The overall objective process intensification in different industries is achieve substantial benefits terms cost, product concentration quality, while eliminating waste improving safety. Intensification bioprocesses could be a valuable tool enhancing efficiency reducing resource consumption bioproduction. In general, bioprocess defined as an increase bioproduct output relative cell concentration, time, reactor volume or cost. This brief overview provides definition biotechnology, presents several general specific examples, addresses some current challenges.

Language: Английский

Citations

0
Booster Circuit for Harvesting Renewable Energy Based on Bioelectric Microbial Fuel Cells Whose Power Can Be Adjusted DOI Creative Commons

Misto,

Siswanto Siswanto, Tri Mulyono

et al.

BIO Web of Conferences, Journal Year: 2024, Volume and Issue: 101, P. 01006 - 01006

Published: Jan. 1, 2024

Microbial fuel cells (MFCs) represent a promising technology that converts organic waste into electrical energy through bacterial activity. The process involves capturing low voltage of approximately 0.4 V generated by the MFC using small capacitor, which is then stored and transferred to larger capacitor increase capacity. In order for this be used general AC-powered devices, an inverter essential convert DC output AC. This system, consisting series capacitors inverters, along with dampers rectifiers, forms circuit can potentially function as efficient low-power generator. effectiveness arrangement remains tested, will determine its viability renewable storage solution.

Language: Английский

Citations

0