Schlagwort: Direct Air Capture

Maxwell Pisciotta, Hélène Pilorgéa, Likhwa Ndlovua, Madeleine Siegelb, Joe Huyettb, Todd Bandhauerb, Peter Psarrasa and Jennifer Wilcox, IN: Energy & Environmental Science, https://pubs.rsc.org/en/content/articlehtml/2025/ee/d4ee04058a

This study explores the potential of geothermal resources to meet the thermal and electrical demands of DAC systems through the development of a geothermal-DAC evaluation framework. The framework examines configurations where binary geothermal power plants and DAC units are engineered to optimize geothermal resource use. These configurations are evaluated based on their CO₂ abatement potential, achieved by displacing carbon-intensive grid electricity and removing atmospheric CO₂. The framework was applied to two hypothetical geothermal resources, representing low (86 °C) and high (225 °C) temperature regimes for binary geothermal power plants, considering various organic Rankine cycle (ORC) working fluids. It was also tested on the Raft River binary geothermal combined cycle power plant.

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Adnan Ozden, Mingchuan Luo, Yanwei Lum, IN: Chemical Engineering Journal, https://doi.org/10.1016/j.cej.2025.165535

This review provides an overview of today’s two most studied CO₂ capture and removal technologies: point-source CO₂ capture and direct air capture. It presents recent advances associated with each technology, highlights the advantages, challenges and remaining milestones, and discusses the potential research directions for feasibility enhancements.

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Houssam Bouaboula, Youssef Belmabkhout, Abdelghafour Zaabout, IN: Energy Conversion and Management, https://doi.org/10.1016/j.enconman.2025.120134

Electrochemical pH-swing processes show significant potential as a direct air capture (DAC) technology for decarbonizing hard-to-abate industries and achieving net-negative emissions by mid-century. While several studies have explored its energetic and economic viability, major concerns persist regarding its environmental impact. In this paper, the authors present a quantitative cradle-to-grave life-cycle assessment of this approach and analyze its environmental implications across various stages, from plant construction to end-of-life treatment, under a large-scale CO₂ capture of 1 MtCO₂ per year. To provide a thorough analysis, the authors consider two cradle-to-grave scenarios: (i) CO₂ and H₂ to storage and (ii) CO₂ and H₂ towards methanol synthesis.

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Ismail Filahi, Ayalew H. Assen, Mohammed Ouikhalfan, Karim Adil, Youssef Belmabkhout, IN: Energy & Fuels, https://doi.org/10.1021/acs.energyfuels.5c02235

This Review highlights recent advances in DAC solid sorbents, including zeolites, metal–organic frameworks (MOFs), ion-exchange resins, and amine-modified mesoporous solids, with a focus on key performance metrics such as adsorption capacity, stability, regeneration efficiency, and scalability in a greenhouse facilities context. Additionally, this Review compares the energy and cost profiles of DAC-enhanced CO₂ enrichment against conventional methods. By outlining both recent progress and persistent challenges, this Review aims to provide insights into the potential of DAC as a sustainable pathway to CO₂ enrichment in greenhouse cultivation.

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Xin Yan, Pengtao Guo, Youbin Zhou, Ting Wang, Xianren Zhang, Yunpan Ying, Qingyuan Yang, Dahuan Liu, IN: Industrial & Engineering Chemistry Research, https://doi.org/10.1021/acs.iecr.5c01660

As the CO₂ concentration in the atmosphere is relatively low, directly capturing CO₂ from the air remains a challenge. Herein, a dual-functionalized strategy is developed to construct a series of IL@ZIF-8 composite materials by regulating the spatial distribution of nitrogen sites of the anion and the amine content of the cation in the ionic liquid (IL). The introduction of functional sites significantly enhances the capture capability of composite materials toward low-concentration CO₂. The IL composed of pyrazole (Py) with adjacent nitrogen sites exhibits stronger interaction with CO₂ due to its lower viscosity and higher electron cloud density.

Yihe Miao, et al., IN: ACS ES&T Engineering, https://doi.org/10.1021/acsestengg.5c00184

Direct air capture (DAC) of CO₂ is attracting more and more attention due to its indispensable role in achieving net-zero carbon emissions by 2050 globally. The large-scale development and deployment of DAC rely heavily on renewable energy to ensure its sustainability and economic feasibility. The feasibility of coupling DAC with renewable energy will ultimately determine its potential as a viable negative emission technology for climate change mitigation. This review examines three representative DAC technology pathways and provides a comprehensive perspective on their integration with renewable energy sources.

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Paka-on Amornsin, Pacharapol Nokpho, Xiaolin Wang, Pornpote Piumsomboon and Benjapon Chalermsinsuwan, IN: Scientific Reports, https://doi.org/10.1038/s41598-025-02074-z

This study investigates the regeneration of zeolite 13X for direct air CO₂ capture by comparing microwave-assisted and conventional heating methods in a fixed-bed reactor. Zeolite 13X, a high-surface-area solid adsorbent, was tested over three adsorption/desorption cycles under ambient conditions with approximately 400 ppm of CO₂. Microwave-assisted regeneration, optimized at 300 W for 10 min (350 °C), achieved a regeneration efficiency of 95.26%, with minimal loss in adsorption capacity (9%) across cycles.

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Shuangjun Li, Zhenyu Du, Junyao Wang, Hao Wang, Xiangkun Elvis Cao, Runkai Chen, Yujia Pang, Shuai Deng, Ondřej Mašek, Xiangzhou Yuan & Ki Bong Lee, IN: Discover Sustainability, https://doi.org/10.1007/s44246-025-00209-5

Carbon emissions reduction within the maritime sector is pivotal for realizing zero-carbon goals and mitigating climate impacts. Adopting renewable carbon fuels presents a potent strategy. It is necessary to have a comprehensive understanding of its negative carbon attributes and enduring contributions to future development based on carbon footprint assessment. By using the CO₂ captured through direct air capture (DAC) technology and the H₂ obtained via water electrolysis as feedstock, electro-methanol (e-methanol) can be produced under renewable energy-driven conditions. Owing to the environmental benefits and economic feasibility of e-methanol, the authors highlight its potential as a practical alternative to traditional fossil fuel-based technical scenarios.

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Wenzhe Yan, Jing Hou, Tao Yan, Zhikun Liu and Peng Kang IN: ACS Applied Materials & Interfaces, https://doi.org/10.1021/acsami.5c01647

In this work, chromium-based DM was functionalized via a two-step postsynthetic modification with ethylenediamine (EDA), tris(2-aminoethyl)amine (TAEA), and polyethylene-polyamines (PEPA). Characterization by Fourier-transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), powder X-ray diffraction (PXRD), and scanning electron microscopy (SEM) confirmed successful synthesis and structural integrity.

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