Tag: Direct Air Capture

Peer-reviewed Publications

Löbner et al. (2025): Direct Air Capture of Carbon Dioxide into MFI Frameworks by Low-Temperature Swing Under Realistic Humidity

Sebastian Löbner, Ashour A. Ahmed, Majid Namayandeh Jorabchi, Alexander Wotzka, Marion Stöhr, Oliver Gröger, Christine Schütz, Marc Rüggeberg, Sebastian Wohlrab and Ali M. Abdel-Mageed, IN: Small, https://doi.org/10.1002/smll.202508150

The urgent need to combat global warming inspired the introduction of the concept of carbon dioxide direct air capture (CO₂-DAC), a key strategy for decentralized greenhouse gas removal from air. In this study, a simple approach for CO₂-DAC is introduced, utilizing ZSM-5 and its ion-exchanged analogues to effectively concentrate CO₂ from humid air (80% RH) at 5 °C and enable its recovery at a moderate desorption temperature of 25 °C where in both cases, ambient air served as a sustainable CO₂ source and desorption medium.

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Peer-reviewed Publications

Nature – Tajuelo Rodriguez et al. (2025): Effect of multiple calcination cycles on CO₂ capture efficiency during carbonation of MgO in a mineral looping process

Elena Tajuelo Rodriguez, Lawrence M. Anovitz, Sai Adapa, Ke Yuan, Dale Hensley, Dong Youn Chung, Matthew G. Boebinger, Andrew G. Stack and Juliane Weber, IN: Scientific Reports, https://doi.org/10.1038/s41598-025-23708-2

Magnesium oxide (MgO) is considered as a potential sorbent for direct air capture of carbon dioxide in a looping process. Previous research on mineral looping for carbon capture from flue gas using MgO has shown deactivation of the sorbent with repeated cycles but repeated cycling for carbonation at ambient conditions has not been yet investigated. Here, the authors tested three cycles of carbonation for MgO nano-scale powders with different starting surface area.

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Peer-reviewed Publications

Zhang et al. (2025): Performance analysis of direct air capture-based renewable power-to-methanol (P2M) system in different regions of China: An annual intermittency investigation

Lanlan Zhang, Kai Han, Yongzhen Wang, Yibo Han, Tao Cui and Yuyao Xia, IN: Energy, https://doi.org/10.1016/j.energy.2025.139082

The direct air capture (DAC) integrated power-to-methanol (P2M) is a promising approach to reverse the carbon emission and energy demand. However, the intermittent character of renewable power and low response speed of DAC bring operation challenge. To evaluate the overall performance under different response time-scale, in this study, the operation strategies based on DAC stages, the number of its units are proposed from the view of reducing the energy storage of battery (strategy Ⅰ) or enhancing the amount of methanol production (in strategy Ⅱ) according to the fluctuating renewable power. Then the annual overall system performance is further distinguished in regions located at Northwest China, which own excellent renewable energy resource and have unsatisfactory wind, solar power curtailment rate.

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Science-Policy Documents

Galanti et al. (2025): Purity-Constrained TVSA Modeling of Lewatit VPOC 1065 for Direct Air Capture: Bridging Cured Thermodynamics, Process Design and Geometrical Analysis

Mattia Galanti, Kiia Kaaresvirta, Ivo Roghair and Martin van Sint Annaland, IN: ChemRxiv Preprint, https://doi.org/10.26434/chemrxiv-2025-8ms1s

This work develops a comprehensive temperature–vacuum swing adsorption modeling framework that unifies detailed adsorption thermodynamics for both dry and humid conditions, refined heat-transfer descriptions accounting for wall-driven regeneration, realistic treatment of auxiliary equipment, and explicit oxygen-purity constraints.

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Peer-reviewed Publications

Alamin et al. (2025): The Long-Term Impact of Direct Capture Approaches to Carbon Dioxide Removal

Al Jay Lan J. Alamin, Melquezedec James T. Cruz, Bryan S. Hernandez and Eduardo R. Mendoza, IN: arXiv Preprint, https://doi.org/10.48550/arXiv.2510.20593

Understanding the similarities and differences of the long term impact of different carbon dioxide removal (CDR) techniques is essential in determining the most effective and sustainable strategies to mitigate climate change. In particular, direct ocean capture (DOC) has emerged as a promising approach. In contrast to direct air capture (DAC) which separates carbon dioxide from the atmosphere, DOC performs the separation directly from seawater before storing it in geological reservoirs. In this study, the authors construct and analyze a kinetic system for CDR via DOC using chemical reaction network theory.

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Peer-reviewed Publications

Kellou et al. (2025): The responsibility of investor-owned carbon majors to contribute to direct air carbon capture and storage investment

Dalia Kellou, Yoga Wienda Pratama, Cristian Zúñiga, Firza Riany, Matthew J. Gidden and Richard Heede, IN: Climate Policy, https://doi.org/10.1080/14693062.2025.2557230

Carbon dioxide removal (CDR) options are critical for achieving global climate objectives. Yet, many proposed removal technologies are in their formative phase. Significant near-term investments are necessary to buy down the cost of the technologies so that they can play a cost-efficient role in future mitigation. This raises questions about who should bear the responsibility to mobilize this risky early investment. Here, the authors propose that investment responsibilities for some novel CDR technologies can be assigned to large investor-owned ‘carbon majors’, drawing on principles of climate justice.

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Peer-reviewed Publications

Kirppu et al. (2025): District heating with negative emissions – Direct Air Carbon Capture and Storage combined with Small Modular Reactors

Heidi Kirppu, Miika Räma, Esa Pursiheimo, Kati Koponen and Tomi J. Lindroos, IN: Carbon Capture Science and Technology, https://doi.org/10.1016/j.ccst.2025.100533

Achieving Paris Agreement targets for climate change mitigation requires an urgent shift away from fossil fuels. In addition, negative emissions by permanently removing carbon dioxide from the atmosphere are required. Both targets require substantial amounts of carbon neutral electricity and heat production. While electricity can be produced and transferred over long distances, the heat production needs to be local. This study investigates an energy system integrating both carbon neutral heat production and carbon dioxide removal from the atmosphere.

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Peer-reviewed Publications

Mir et al. (2025): Advanced direct air capture of CO₂ using air conditioning systems: a life cycle assessment

Namra Mir, Aliya Banu, Yasser M. Abdellatif, Abdulkarem I. Amhamed and Yusuf Bicer, IN: The Society of Environmental Process Engineers, https://doi.org/10.1016/j.tsep.2025.104223

Rising global temperatures and deteriorating urban air quality underscore the urgent need for effective carbon removal technologies. Direct Air Capture (DAC) offers a promising solution, but its high energy demand raises concerns about overall sustainability. This study evaluates the environmental performance of a novel system that integrates DAC with Heating, Ventilation, and Air Conditioning (HVAC) infrastructure to improve energy efficiency and reduce environmental impact. A cradle-to-gate life cycle assessment (LCA) is conducted based on numerical modeling of the DAC-HVAC system. The integrated system exhibits significantly reduced environmental impacts compared to a standalone DAC unit.

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Peer-reviewed Publications

Lee et al. (2025): Forest or machine? Public perceptions and acceptability of negative emissions technologies and practices across six European countries

Chieh-Yu Lee, Goda Perlaviciute and Linda Steg, IN: Climatic Change, https://doi.org/10.1007/s10584-025-04043-x

To limit climate change to 1.5 °C, negative emission technologies and practices (NETPs) are needed to supplement, not replace, other essential mitigation efforts. The authors conducted a large-scale survey on NETPs in six EU countries (N = 5,310) to examine: (1) public preferences for NETPs, next to other mitigation options; (2) how people evaluate the environmental and intergenerational consequences and acceptability of nature-based (i.e., afforestation and reforestation; AR) and technology-based NETPs (i.e., direct air capture with carbon storage; DACCS); (3) the relationship between the evaluation of consequences and acceptability judgements of AR and DACCS; and (4) public preferences for AR and DACCS in general versus in their own country.

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