Sorption direct air capture with CO2 utilization

Progress in Energy and Combustion Science, Journal Year: 2023, Volume and Issue: 95, P. 101069 - 101069

Published: Jan. 3, 2023

Direct air capture (DAC) is gathering momentum since it has vast potential and high flexibility to collect CO2 from discrete sources as "synthetic tree" when compared with current technologies, e.g., amine based post-combustion capture. It considered one of the emerging carbon technologies in recent decades remains a prototype investigation stage many technical challenges be overcome. The objective this paper comprehensively discuss state-of-the-art DAC utilization, note unresolved technology bottlenecks, give perspectives for commercial large-scale applications. Firstly, characteristics physical chemical sorbents are evaluated. Then, representative processes, pressure swing adsorption, temperature adsorption other ongoing absorption loops, described compared. Methods conversion including synthesis fuels chemicals well biological utilization reviewed. Finally, techno-economic analysis life cycle assessment application summarized. Based on research achievements, future presented, which include providing guidelines obtaining desired characteristics, uncovering mechanisms different working processes establishing evaluation criteria terms economic aspects.

Language: Английский

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The cost of direct air capture and storage can be reduced via strategic deployment but is unlikely to fall below stated cost targets

One Earth, Journal Year: 2023, Volume and Issue: 6(7), P. 899 - 917

Published: July 1, 2023

Carbon dioxide removal (CDR) is necessary to minimize the impact of climate change by tackling hard-to-abate sectors and historical emissions. Direct air capture storage (DACS) an important CDR technology, but it remains unclear when how DACS can be economically viable. Here, we use a bottom-up engineering-economic model together with top-down technological learning projections calculate plant-level cost trajectories for four technologies. Our analysis demonstrates that costs these technologies plateau 2050 at around $100-600 t-CO2-1 mainly via capital reduction through aggressive deployment, still exceed optimistic targets defined countries such as US (i.e., $100 t-CO2-1). A further existing policy mechanisms indicates strong, project-catered support will required create market opportunities, accelerate scale-up lower further. work suggests strategic deployment operation must coupled strong policies minimise maximise opportunity make planet-scale impact.

Language: Английский

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Challenges and Opportunities: Metal–Organic Frameworks for Direct Air Capture

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 34(43)

Published: Oct. 12, 2023

Abstract Global reliance on fossil fuel combustion for energy production has contributed to the rising concentration of atmospheric CO 2 , creating significant global climate challenges. In this regard, direct air capture (DAC) from atmosphere emerged as one most promising strategies counteract harmful effects environment, and further development commercialization technology will play a pivotal role in achieving goal net‐zero emissions by 2050. Among various DAC adsorbents, metal–organic frameworks (MOFs) show great potential due their high porosity ability reversibly adsorb at low concentrations. However, adsorption efficiency cost‐effectiveness these materials must be improved widely deployed sorbents. To that end, perspective provides critical discussion several types benchmark MOFs have demonstrated capacities, including an assessment stability, mechanism, capture‐release cycling behavior, scale‐up synthesis. It then concludes highlighting limitations addressed go research laboratory implementation devices scale so they can effectively mitigate change.

Language: Английский

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Global production potential of green methanol based on variable renewable electricity

Energy & Environmental Science, Journal Year: 2024, Volume and Issue: 17(10), P. 3503 - 3522

Published: Jan. 1, 2024

The production cost of green methanol from renewable electricity-based hydrogen and atmospheric carbon dioxide could reach market prices by 2040, making it a potential solution for defossilisation the global chemical industry marine transport.

Language: Английский

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Comparative review of Direct air capture technologies: From technical, commercial, economic, and environmental aspects

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 484, P. 149411 - 149411

Published: Feb. 8, 2024

Language: Английский

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Water management and heat integration in direct air capture systems

Nature Chemical Engineering, Journal Year: 2024, Volume and Issue: 1(3), P. 208 - 215

Published: March 5, 2024

Water plays a pivotal role in direct air capture technologies, impacting materials, regeneration processes and product streams. CO2 removal methods, including absorption, adsorption electrochemical techniques, encounter challenges associated with water, thus reducing their efficacy. fluxes into out of aqueous solvents affect the concentration overall performance. Solid adsorbents co-adsorb water greater quantities than will require effective strategies to address substantial energy penalty desorption each cycle. Water-management are imperative for economic viability minimizing environmental impact, but high intensity necessitates heat recovery techniques. Feed dehydration can be combined strategic integration process streams standard techniques front-end management. For back-end approaches, mechanical vapor compression is viable solution coupling management, we highlight potential benefits three implementation methods. Further research variable climate conditions quality impacts essential success technologies. management crucial enhancing impact (DAC) This Perspective discusses several DAC processes.

Language: Английский

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Direct air capture of CO2 for solar fuel production in flow

Nature Energy, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 13, 2025

Language: Английский

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A roadmap for achieving scalable, safe, and low-cost direct air carbon capture and storage

Energy & Environmental Science, Journal Year: 2023, Volume and Issue: 16(10), P. 4280 - 4304

Published: Jan. 1, 2023

A roadmap that delineates the major hurdles and essential RD&D actions to enable large-scale DACCS deployment.

Language: Английский

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Direct Air Capture of CO₂ Using Amine/Alumina Sorbents at Cold Temperature

ACS Environmental Au, Journal Year: 2023, Volume and Issue: 3(5), P. 295 - 307

Published: June 29, 2023

Rising CO2 emissions are responsible for increasing global temperatures causing climate change. Significant efforts underway to develop amine-based sorbents directly capture from air (called direct (DAC)) combat the effects of However, sorbents' performances have usually been evaluated at ambient (25 °C) or higher, most often under dry conditions. A significant portion natural environment where DAC plants can be deployed experiences below 25 °C, and always contains some humidity. In this study, we assess adsorption behavior amine (poly(ethyleneimine) (PEI) tetraethylenepentamine (TEPA)) impregnated into porous alumina cold (−20 humid capacities °C 400 ppm highest 40 wt% TEPA-incorporated γ-Al2O3 samples (1.8 mmol CO2/g sorbent), while wt % PEI-impregnated exhibit moderate uptakes (0.9 g–1). both PEI- decrease with decreasing content temperatures. The 20 TEPA show best performance −20 conditions (1.6 1.1 g–1, respectively). Both also stable high working 1.2 g–1) across 10 cycles adsorption–desorption (adsorption desorption conducted 60 °C). Introducing moisture (70% RH improves capacity amine-impregnated PEI, TEPA, good results presented here indicate that PEI potential materials conditions, further opportunities optimize these scalable deployment different environmental

Language: Английский

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A comprehensive review on regeneration strategies for direct air capture

Journal of CO2 Utilization, Journal Year: 2023, Volume and Issue: 76, P. 102587 - 102587

Published: Sept. 27, 2023

Direct air capture (DAC), which removes CO2 directly from ambient air, is a critical negative emission technology for mitigating global climate change. Efficiency and the source of energy are crucial considerations DAC to enable emissions. Substantial technological progress has been made in technologies, promising opportunities exist commercial-scale deployments. However, technologies require high regeneration release sorbents. Various approaches have tested optimized different systems. This review demonstrates that work equivalent demand (supported by either electric grid or fossil fuel combustion) ranges 0.5–18.75 GJ/t-CO2 solid sorbent systems 0.62–17.28 liquid solvent The process energy-demanding key step efficient operation. Potential methods lower include microwave, ultrasound, magnetic particle heating, swing. Although potential date still at lab scale, significant being done optimize system processes.

Language: Английский

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