03.09.2021

# New Publications

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Zolfaghari, Zahra; et al. (2021): Direct air capture from demonstration to commercialization stage: A bibliometric analysis

Zolfaghari, Zahra; Aslani, Alireza; Moshari, Amirhosein; Malekli, Mohammadreza (2021): Direct air capture from demonstration to commercialization stage: A bibliometric analysis. In Int J Energy Res 7 (10), p. 291. DOI: 10.1002/er.7203.

"Among different carbon capturing technologies, direct air capture (DAC) reduces CO2 emissions from air. While the technology readiness level (TRL) of DAC is in the demonstration stage, identifying the commercialization research gaps and possible opportunities can help with diffusion and adoption of the technology. This research uses a knowledge discovery in research databases, based on bibliometric analysis and data mining, to understand DAC research and development's current status and future. Then, we identify the critical areas of the research gap for commercialization."

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30.08.2021

# Media

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Clean Energy Wire: Researchers and industry embrace CCS as strategy for climate neutrality

"Researchers in Germany are examining ways to capture CO2 from the air and store it. The Competence Center for Renewable Energies and Energy Efficiency (CC4E) at the Hamburg University of Applied Sciences (HAW Hamburg) has begun operating the first direct air capture facility in northern Germany."

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30.08.2021

# Media

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Podcast: BBC Sounds: 39 Ways to Save the Planet. Swiss Air

"Giant fans suck in fresh Alpine air and remove the carbon dioxide. Is this our future?"

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30.08.2021

# Political Papers

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Capanna, Steve; et al. (2021): Early Deployment of Direct Air Capture with Dedicated Geologic Storage. Federal Policy Options

Capanna, Steve; Higdon, Jake; Lackner, Maureen (2021): Early Deployment of Direct Air Capture with Dedicated Geologic Storage. Federal Policy Options. Environmental Defense Fund. Available online at https://www.edf.org/sites/default/files/documents/DAC%20Policy_Final.pdf.

"We describe and evaluate ten policy options for financially supporting deployment, either through capital or operations support. We also discuss three enabling policies that do not directly induce deployment, but are still important pieces of the innovation cycle. 1. Capital support: Investment tax credits, accelerated depreciation, loan programs, tax-advantaged financing structures, and public competitions. 2. Operations support: Production tax credits, procurement (including reverse auctions and contracts for differences), direct payments, government-owned contractor-operated facilities (GOCOs), and emissions pricing and standards. 3. Enabling policies: Federal research, development, and demonstration (RD&D); accelerated CO2 storage development; and CO2 transport infrastructure."

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30.08.2021

# New Publications

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Tutolo, Benjamin M.; et al. (2021): Alkalinity Generation Constraints on Basalt Carbonation for Carbon Dioxide Removal at the Gigaton-per-Year Scale

Tutolo, Benjamin M.; Awolayo, Adedapo; Brown, Calista (2021): Alkalinity Generation Constraints on Basalt Carbonation for Carbon Dioxide Removal at the Gigaton-per-Year Scale. In Environmental science & technology. DOI: 10.1021/acs.est.1c02733.

"The world adds about 51 Gt of greenhouse gases to the atmosphere each year, which will yield dire global consequences without aggressive action in the form of carbon dioxide removal (CDR) and other technologies. A suggested guideline requires that proposed CDR technologies be capable of removing at least 1% of current annual emissions, about half a gigaton, from the atmosphere each year once fully implemented for them to be worthy of pursuit. Basalt carbonation coupled to direct air capture (DAC) can exceed this baseline, but it is likely that implementation at the gigaton-per-year scale will require increasing per-well CO2 injection rates to a point where CO2 forms a persistent, free-phase CO2 plume in the basaltic subsurface. Here, we use a series of thermodynamic calculations and basalt dissolution simulations to show that the development of a persistent plume will reduce carbonation efficiency (i.e., the amount of CO2 mineralized per kilogram of basalt dissolved) relative to existing field projects and experimental studies."

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25.08.2021

# Political Papers

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C2G (2021): Direct Air Carbon Dioxide Capture & Storage (DACCS). Policy Brief

C2G (2021): Direct Air Carbon Dioxide Capture & Storage (DACCS). Policy Brief. C2G. Available online at https://www.c2g2.net/wp-content/uploads/DACCS-Policy-Brief.pdf.

"Carbon Dioxide Removal (CDR), also known as negative emissions, aims to address the primary driver of climate change by removing carbon dioxide (CO2 ) from the atmosphere and ensuring its long-term storage. Direct Air Carbon Dioxide Capture and Storage (DACCS) is an approach to CDR which may have the potential to contribute to slowing the rate of global warming and help prevent ocean acidification. DACCS should not be confused with Carbon Capture and Storage (CCS). DACCS captures CO2 directly from ambient air and subsequently stores it. CCS stops additional new CO2 from entering the atmosphere at its point of source."

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25.08.2021

# Media

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Business Traveller: Virgin Atlantic signs MoU with CO2 Direct Air Capture service

"Storegga plans to build a Direct Air Capture (DAC) facility in northeast Scotland, with the aim of permanently removing one million tonnes of carbon dioxide from the atmosphere each year. It will be the first large-scale DAC facility of its kind in Europe, with a target of beginning operations in 2026."

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23.08.2021

# New Publications

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Miao, Yihe; et al. (2021): Operating Temperatures Affect Direct Air Capture of CO2 in Polyamine-Loaded Mesoporous Silica

Miao, Yihe; He, Zhijun; Zhu, Xuancan; Izikowitz, David; Li, Jia (2021): Operating Temperatures Affect Direct Air Capture of CO2 in Polyamine-Loaded Mesoporous Silica. In Chemical Engineering Journal, p. 131875. DOI: 10.1016/j.cej.2021.131875.

"Direct air capture (DAC) is a representative negative emission technology that plays a critical role in achieving carbon neutrality. Understanding the CO2 capture performance of DAC materials in a real-world environment is important to optimize the performance of DAC processes, unfortunately, little is known about their capture efficiency under varying operating temperatures. To this end, we investigated the influence of operating temperatures on the DAC performance of the polyamine-loaded mesoporous silica."

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16.08.2021

# Political Papers

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Cames, Martin; et al. (2021): E-fuels versus DACCS. Total costs of electro-fuels and direct air capture and carbon storage while taking into account direct and upstream emissions and environmental risks

Cames, Martin; Chaudry, Saleem; Göckeler, Katharina; Kasten, Peter; Kurth, Stefan (2021): E-fuels versus DACCS. Total costs of electro-fuels and direct air capture and carbon storage while taking into account direct and upstream emissions and environmental risks. Study on behalf of Transport & Environment (T&E). Öko-Institut e.V. Berlin.

"For defossilizing European aviation, synthetic fuels or electro fuels (e-fuels) might play a pivotal role in the long term. The UK’s Committee on Climate Change, however, suggests that offsetting aviation’s emission from fossil kerosene through direct air capture and carbon storage (DACCS) is more cost effective than replacing fossil kerosene by e-fuels. In this study we estimate and compare the total costs of both options while considering direct and upstream emissions and the environmental risks of both options. The aim of this comparison is to identify the scope of the potential cost advantage of the DACCS route and to assess whether it involves risks or caveats in the longer term."

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16.08.2021

# New Publications

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Anyanwu, John-Timothy; et al. (2022): CO2 capture (including direct air capture) and natural gas desulfurization of amine-grafted hierarchical bimodal silica

Anyanwu, John-Timothy; Wang, Yiren; Yang, Ralph T. (2022): CO2 capture (including direct air capture) and natural gas desulfurization of amine-grafted hierarchical bimodal silica. In Chemical Engineering Journal 427, p. 131561. DOI: 10.1016/j.cej.2021.131561.

"Amine grafting under hydrous conditions is emerging as a promising solution to developing amine grafted adsorbents with high amine loading and superior capture performance. In this study, a hierarchical bimodal mesoporous silica (HBS) that can be easily and cost-effectively synthesized was identified."

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