Tag: Direct Air Capture

Wang et al. (2025): Enhancing direct air carbon capture into microalgae: A membrane sparger design with carbonic anhydrase integration

Rui-Long Wang, Ming-Jia Li, Gregory J.O. Martin, Sandra E. Kentish IN: Algal Research 85, 103875, https://doi.org/10.1016/j.algal.2024.103875

In this study, a novel membrane gas sparger incorporating a carbonic anhydrase coated electrospun polysulfone membrane is proposed, to enhance the CO2 sequestration rate from atmospheric air into photobioreactors and open raceway ponds. 

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Bach et al. (2024): Tetraperoxotitanates for High-Capacity Direct Air Capture of Carbon Dioxide

Karlie Bach, Eduard Garrido Ribó, Jacob S. Hirschi, Zhiwei Mao, Makenzie T. Nord, Lev N. Zakharov, Konstantinos A. Goulas, Tim J. Zuehlsdorff, May Nyman IN: Chemistry of Materials, https://doi.org/10.1021/acs.chemmater.4c01795

Materials chemists play a strategic role in achieving ambitious global climate goals, including removing legacy CO2 via direct air capture (DAC). Innovating diverse DAC materials will enable their effective use in varying conditions and improve our understanding of CO2 capture mechanisms. In our current contribution, we have synthesized a family of homoleptic alkali tetraperoxotitanate materials and studied their DAC reactivity.

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McQueen & Drennan (2024): The use of warehouse automation technology for scalable and low-cost direct air capture

Noah McQueen, David Drennan IN: Frontiers in Climate 6, 1415642, https://doi.org/10.3389/fclim.2024.1415642

In this study, the authors discuss Heirloom’s approach to DAC, which uses naturally occurring minerals, namely, calcium carbonate (CaCO3), in a cyclic process that leverages warehouse automation systems previously developed for large warehouses. The integration of DAC with warehouse automation systems unlocks a degree of manufacturability, scalability, operational efficiency, and financial viability. For successful scaling, DAC technologies and project developers must think through key scalability constraints, including modularity, constructability, supply chains, and leveraging existing infrastructure.

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Dong et al. (2025): Direct air capture of CO2 using bi-amines-functionlized hierarchical mesoporous silica: Effects of organic amine loading, moisture and temperature

Xiaolong Dong, Shengjie Zhu, Lei Chen, Xiangping Li, Yaqing Zhang, Tiantian Jiao, Ruochen Zhang, Haili Niu, Jianguang Zhang, Wenrui Zhang, Peng Liang IN: Separation and Purification Technology 355/A, 129647, https://doi.org/10.1016/j.seppur.2024.129647

With the rapid increase of carbon dioxide in the atmosphere, it has become urgent to reduce CO2 emissions. It is imperative to develop low-cost and high-efficiency CO2 direct air capture adsorbents. In this research, dual mesoporous silica carriers for direct air capture of CO2 were synthesized and evaluated regarding their performance in absorbing CO2

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Liu et al. (2024): Direct air capture of CO2 using biochar prepared from sewage sludge: Adsorption capacity and kinetics

Jun Liu, Zefan Wang, Chenyang Liang, Kehao Fang, Shaokang Li, Xinwei Guo, Tao Wang, Mengxiang Fang IN: Science of The Total Environment 948, 174887, https://doi.org/10.1016/j.scitotenv.2024.174887

As an emerging carbon-negative emission technology, carbon dioxide capture from the air is an essential safeguard for alleviating global warming. Sludge-activated carbon with excellent mesoporous structure is a potential material for CO2 capture. In this paper, the amino modified sewage sludge materials were used to prepare the porous CO2 adsorbent from air.

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Almajed et al. (2024): Closing the Loop: Unexamined Performance Trade-Offs of Integrating Direct Air Capture with (Bi)carbonate Electrolysis

Hussain M. Almajed, Recep Kas, Paige Brimley, Allison M. Crow, Ana Somoza-Tornos, Bri-Mathias Hodge, Thomas E. Burdyny, Wilson A. Smith IN: ACS Energy Letters 9 (5), 2472-2483, https://doi.org/10.1021/acsenergylett.4c00807

CO2 from carbonate-based capture solutions requires a substantial energy input. Replacing this step with (bi)carbonate electrolysis has been commonly proposed as an efficient alternative that coproduces CO/syngas. Here, the authors assess the feasibility of directly integrating air contactors with (bi)carbonate electrolyzers by leveraging process, multiphysics, microkinetic, and technoeconomic models. 

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Rinberg & Aziz (2024): Bicarbonate-Carbonate Selectivity through Nanofiltration for Direct Air Capture of Carbon Dioxide

Anatoly Rinberg, Michael J. Aziz IN: ACS ES&T Engineering, https://doi.org/10.1021/acsestengg.4c00150

Direct air capture of carbon dioxide is one approach among many proposed that is capable of offsetting hard-to-avoid emissions. In previous work, we developed the alkalinity concentration swing (ACS) method, which is driven through concentrating an alkaline solution that has been loaded with atmospheric CO2 by desalination technologies, such as reverse osmosis or capacitive deionization. Though the ACS is promising in terms of energy usage and implementation, its absorption rate and water requirements are infeasible for a large-scale DAC process. Here, we propose an improvement on the ACS, the bicarbonate-enriched alkalinity concentration swing (BE-ACS), which selects bicarbonate ions from a stream of aqueous alkaline solution that has absorbed atmospheric CO2

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Nature – Ottenbros et al. (2024): Prospective environmental burdens and benefits of fast-swing direct air carbon capture and storage

Anne B. Ottenbros, Rosalie van Zelm, Jasper Simons, Mitchell K. van der Hulst, Kiane de Kleijne, Hans de Neve, Mark A. J. Huijbregts IN: Scientific Reports 14, 16549, https://doi.org/10.1038/s41598-024-66990-2

This study investigates the environmental impact of a new fast-swing solid sorbent DAC system, including CO2 transport and storage, over its life cycle, using prospective life cycle assessment.

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Domene & Crawford (2024): Dynamic analysis of a floating wind turbine platform with on-board CO2 direct air capture

Gerard Avellaneda Domene, Curran Crawford IN: Ocean Engineering 308, 118205, https://doi.org/10.1016/j.oceaneng.2024.118205

Offshore wind-powered CO2 direct air capture coupled with deep-water, submarine basalt reservoirs has the potential to offer a reliable way to permanently store CO2 while avoiding grid-energy and land-use competition. This paper analyzes the incorporation of a DAC system into a reference floating wind turbine (FWT) concept, the IEA 15 MW RWT atop the UMaine VolturnUS-S semi-submersible. 

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Hu et al. (2024): Assessing the future impact of 12 direct air capture technologies

Yongxin Hu, Rafiqul Gani, Kai Sundmacher, Teng Zhou IN: Chemical Engineering Science, 298, https://doi.org/10.1016/j.ces.2024.120423

This article conducts a comparative analysis of the CO2 emissions of 12 state-of-the-art DAC technologies. The evaluations consider regional (EU, USA, and China) and temporal (years 2023, 2030, and 2050) energy supply variations.

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