Energy storage will be essential for balancing the renewable energy systems of tomorrow, especially if excess electricity from wind and solar power requires immediate utilization. The use of biogas ...as a carbon source can generate carbon dioxide‐neutral carbon‐based energy carriers, such as methane or methanol. The utilization of biogas today is limited to the generation of heat/power or biomethane (first‐generation upgrading); both processes disregard the potential of the coproduced carbon dioxide during the fermentation process. By using renewable energy, biogas upgrading systems can convert carbon dioxide into hydrocarbon‐based high‐energy‐density fuels, which can replace fossil‐based fuels for applications in which they are hard to decarbonize. The possibilities for the future utilization of biogas are discussed, and the terminology for “second‐generation upgrading” is introduced to help research and development within this field. It is believed that second‐generation upgrading of biogas will have a huge potential for dynamic energy storage.
New term, new technology: Biogas has vast untapped potential as a carbon source for energy storage. In this Concept, it is argued that there is a requirement to introduce the terminology first‐ and second‐generation upgrading to classify and distinguish between various technologies for value‐added utilization of biogas.
Electrochemistry‐Based CO2 Removal Technologies Biel‐Nielsen, Tessa Lund; Hatton, T. Alan; Villadsen, Sebastian N. B. ...
ChemSusChem,
June 9, 2023, Letnik:
16, Številka:
11
Journal Article
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Unprecedented increase in atmospheric CO2 levels calls for efficient, sustainable, and cost‐effective technologies for CO2 removal, including both capture and conversion approaches. Current CO2 ...abatement is largely based on energy‐intensive thermal processes with a high degree of inflexibility. In this Perspective, it is argued that future CO2 technologies will follow the general societal trend towards electrified systems. This transition is largely promoted by decreasing electricity prices, continuous expansion of renewable energy infrastructure, and breakthroughs in carbon electrotechnologies, such as electrochemically modulated amine regeneration, redox‐active quinones and other species, and microbial electrosynthesis. In addition, new initiatives make electrochemical carbon capture an integrated part of Power‐to‐X applications, for example, by linking it to H2 production. Selected electrochemical technologies crucial for a future sustainable society are reviewed. However, significant further development of these technologies within the next decade is needed, to meet the ambitious climate goals.
Charging towards CO2 capture: Investments in electrochemical methods within carbon capture and conversion are pivotal in developing a sustainable future society based on renewable energy sources, biological catalysts, and e‐fuel applications. This Perspective argues that electrochemistry is the most energy‐efficient and flexible way to meet climate goals and establish a circular carbon economy.
A Call for Standards in the CO 2 Value Chain Neerup, Randi; Løge, Isaac A; Helgason, Kári ...
Environmental science & technology,
12/2022, Letnik:
56, Številka:
24
Journal Article
Electrochemistry-Based CO 2 Removal Technologies Biel-Nielsen, Tessa Lund; Hatton, T Alan; Villadsen, Sebastian N B ...
ChemSusChem,
2023-Jun-09, 2023-06-09, Letnik:
16, Številka:
11
Journal Article
Recenzirano
Unprecedented increase in atmospheric CO
levels calls for efficient, sustainable, and cost-effective technologies for CO
removal, including both capture and conversion approaches. Current CO
...abatement is largely based on energy-intensive thermal processes with a high degree of inflexibility. In this Perspective, it is argued that future CO
technologies will follow the general societal trend towards electrified systems. This transition is largely promoted by decreasing electricity prices, continuous expansion of renewable energy infrastructure, and breakthroughs in carbon electrotechnologies, such as electrochemically modulated amine regeneration, redox-active quinones and other species, and microbial electrosynthesis. In addition, new initiatives make electrochemical carbon capture an integrated part of Power-to-X applications, for example, by linking it to H
production. Selected electrochemical technologies crucial for a future sustainable society are reviewed. However, significant further development of these technologies within the next decade is needed, to meet the ambitious climate goals.
Direct catalytic methanation of CO2 (from CO2/CH4 biogas mixture) to produce biomethane was conducted in a pilot demonstration plant. In the demonstration project (MeGa-StoRE), a biogas ...desulfurization process and thermochemical methanation of biogas using hydrogen produced by water electrolysis were carried out at a fully operational biogas plant in Denmark. The main objective of this part of the project was to design and develop a reactor system for catalytic conversion of CO2 in biogas to methane and feed biomethane directly to the existing natural gas grid. A process was developed in a portable container with a 10 Nm3/h of biogas conversion capacity. A test campaign was run at a biogas plant for more than 6 months, and long-time operation revealed a stable steady-state conversion of more than 90% CO2 conversion to methane. A detailed catalytic study was performed to investigate the high activity and stability of the applied catalyst.
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