Bioelectrochemical systems for energy storage: A scaled-up power-to-gas approach

Ceballos-Escalera, Alba; Molognoni, Daniele; Bosch‐Jimenez, Pau; Shahparasti, Mahdi; Bouchakour, Salim; Luna, Álvaro; Guisasola, Albert; Borràs, Eduard; Pirriera, Mónica Della

doi:10.1016/j.apenergy.2019.114138

Cited by 42 publications

(25 citation statements)

References 38 publications

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“…A medium-scale EMG-BES prototype was built by stacking 45 cells together, grouped by 3 into 15 single-chamber, membraneless reactor modules, as described by Ceballos-Escalera et al (2020). The volume of each reactor module was 1.78 L (plus 5.2 L due to recirculation tank and piping volumes), reaching a total prototype volume of 32 L. Anode and cathode electrodes (170 cm 2 projected surface, each one) were made of thermally treated carbon felt (SGL group, Germany).…”

Section: Methodsmentioning

confidence: 99%

“…The specific energy consumption of the EMG-BES reactor (in kWh m −3 CH 4 ) was calculated dividing the consumed electrical power by the CH 4 production rate. Anode and cathode Coulombic efficiencies were determined as explained by Ceballos-Escalera et al (2020). All these variables (measured and/or calculated) were statistically treated in order to find the average and standard deviation values, for each operational condition tested.…”

Section: Analysis and Calculationsmentioning

confidence: 99%

“…The relevant presence of N 2 in the biogas (6-11%) was due to air intrusion in the reactor, which could not be maintained completely airtight. On the other hand, the O 2 content of biogas was always minor than 1%, as it was likely reduced to water at the cathode or consumed by heterotrophic bacteria, that were present due to the mixed microbial culture used as inoculum (Ceballos-Escalera et al, 2020). Th eventual inhibition effect of O 2 over the electromethanogenic population is still unclear at this stage and will require further research to elucidate its impact on the overall process efficiency.…”

Section: Biogas Compositionmentioning

confidence: 99%

“…It can be coupled directly with anaerobic digestion (Park et al, 2018) and it reduces maintenance, energy losses and complexity of the reactor. This has proven to be effective for biomethane generation, from laboratory to prototype scale (Muñoz-Aguilar et al, 2018;Ceballos-Escalera et al, 2020). In both cases of single and double-chamber EMG-BES, the methanation process is performed within a single step process, not requiring preliminary H 2 production and occurring at mild temperature and pressure (25-35 • C, 1-3 bar).…”

Section: Introductionmentioning

confidence: 99%

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How Operational Parameters Affect Electromethanogenesis in a Bioelectrochemical Power-to-Gas Prototype

et al. 2020

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Section: Methodsmentioning

confidence: 99%

Section: Analysis and Calculationsmentioning

confidence: 99%

Section: Biogas Compositionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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How Operational Parameters Affect Electromethanogenesis in a Bioelectrochemical Power-to-Gas Prototype

et al. 2020

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“…Gretzschel et al [9] focused on power-to-hydrogen (P2H) technology and the elimination of organic micropollutants at WWTPs, considering the possibility of offering system service, as well: automatic frequency restoration reserve (aFRR), which can provide short-term flexibility for network operators. Ceballos-Escalera et al [10] examined the energy storage attributes of a prototype with a bioelectrochemical system for electromethanogenesis (EMG-BES) at a WWTP, which is an emerging technology in the P2M segment besides chemical and biological methanation. They also showed the future potential of the interconnectedness of renewable energy overproduction, biomethane production, and wastewater treatment.…”

Section: Introductionmentioning

confidence: 99%

Seasonal Energy Storage Potential Assessment of WWTPs with Power-to-Methane Technology

Csedő

Sinóros-Szabó²,

Zavarkó

2020

Energies

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Power-to-methane technology (P2M) deployment at wastewater treatment plants (WWTPs) for seasonal energy storage might land on the agenda of decision-makers across EU countries, since large WWTPs produce a notable volume of biogas that could be injected into the natural gas grid with remarkable storage capacities. Because of the recent rapid increase of local photovoltaics (PV), it is essential to explore the role of WWTPs in energy storage and the conditions under which this potential can be realized. This study integrates a techno-economic assessment of P2M technology with commercial/investment attractiveness of seasonal energy storage at large WWTPs. Findings show that a standardized 1 MWel P2M technology would fit with most potential sites. This is in line with the current technology readiness level of P2M, but increasing electricity prices and limited financial resources of WWTPs would decrease the commercial attractiveness of P2M technology deployment. Based on a Hungarian case study, public funding, biomethane feed-in tariff and minimized or compensated surplus electricity sourcing costs are essential to realize the energy storage potential at WWTPs.

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A Critical Analysis on Transformation of Renewable Energy to Green Chemicals: Opportunities and Challenges

Rashid,

Benhelal,

Abbas

2024

ChemBioEng Reviews

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The abundant natural resources and rapidly falling prices to generate and store renewable energy create a remarkable opportunity for a new group of manufacturing industries to emerge. These technology pathways use abundant or waste resources to produce green chemicals and fuels like green hydrogen (H2), green ammonia (NH3), and green synthetic hydrocarbons (HCs). Integrating chemical processes and renewable energy can complete the carbon loop and bring substantial decarbonization along with economic opportunities around the globe. An evidence‐based and industry‐focused critical review of technologies to produce green chemicals and fuels from renewable energy is presented. It also discusses the market size and applications for these emerging industries and presents their development status, benefits, and challenges to commercialization. Green hydrogen production from renewable energy turns out to be the initial and key stage for all these technological advancements and is indispensable for their techno‐economic viability. Other environmentally friendly feedstocks, such as nitrogen (from the air) and wastes such as CO2 (from industrial flue gas), can produce green chemicals. Besides environmental benefits, several other benefits of producing green chemicals from renewable energy are identified. These include but are not limited to (i) accelerating the economy for renewable energy and hydrogen generation, (ii) savings in energy, costs, and natural resources, and (iii) creating millions of jobs. A perspective on opportunities to develop the green chemical industry and assist academia, industry, and policymakers is provided.

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Bioelectrochemical systems for energy storage: A scaled-up power-to-gas approach

Cited by 42 publications

References 38 publications

How Operational Parameters Affect Electromethanogenesis in a Bioelectrochemical Power-to-Gas Prototype

How Operational Parameters Affect Electromethanogenesis in a Bioelectrochemical Power-to-Gas Prototype

Seasonal Energy Storage Potential Assessment of WWTPs with Power-to-Methane Technology

A Critical Analysis on Transformation of Renewable Energy to Green Chemicals: Opportunities and Challenges

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