Direct air capture: process technology, techno-economic and socio-political challenges

Energy & Environmental Science, Journal Year: 2022, Volume and Issue: 15(4), P. 1360 - 1405

Published: Jan. 1, 2022

This comprehensive review appraises the state-of-the-art in direct air capture materials, processes, economics, sustainability, and policy, to inform, challenge inspire a broad audience of researchers, practitioners, policymakers.

Language: Английский

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PRospective EnvironMental Impact asSEment (premise): A streamlined approach to producing databases for prospective life cycle assessment using integrated assessment models

Renewable and Sustainable Energy Reviews, Journal Year: 2022, Volume and Issue: 160, P. 112311 - 112311

Published: March 3, 2022

Prospective Life Cycle Assessment (pLCA) is useful to evaluate the environmental performance of current and emerging technologies in future. Yet, as energy systems industries are rapidly shifting towards cleaner means production, pLCA requires an inventory database that encapsulates expected changes environment at a given point time, following specific socio-techno-economic pathways. To this end, study introduces premise, tool streamline generation prospective databases for by integrating scenarios generated Integrated Models (IAM). More precisely, premise applies number transformations on energy-intensive activities found ecoinvent according projections provided IAM. Unsurprisingly, shows that, within socio-economic narrative, climate change mitigation target chosen affects nearly all database. This illustrated focusing effects observed few activities, such direct air capture CO2, lithium-ion batteries, electricity clinker production well freight transport road, relation applied sector-based transformation target. work also discusses limitations challenges faced when coupling IAM LCA what improvements be brought further facilitate development pLCA.

Language: Английский

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On the climate impacts of blue hydrogen production

Sustainable Energy & Fuels, Journal Year: 2021, Volume and Issue: 6(1), P. 66 - 75

Published: Nov. 19, 2021

Natural gas based hydrogen production with carbon capture and storage is referred to as blue hydrogen.

Language: Английский

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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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Carbon dioxide capture with zeotype materials

Chemical Society Reviews, Journal Year: 2022, Volume and Issue: 51(22), P. 9340 - 9370

Published: Jan. 1, 2022

This review describes the application of zeotype materials for capture CO 2 in different scenarios, critical parameters defining adsorption performances, and challenges zeolitic adsorbents capture.

Language: Английский

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Evaluation of the role of clean energy technologies, human capital, urbanization, and income on the environmental quality in the United States

Journal of Cleaner Production, Journal Year: 2023, Volume and Issue: 402, P. 136802 - 136802

Published: March 15, 2023

Language: Английский

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Carbon dioxide separation and capture by adsorption: a review

Environmental Chemistry Letters, Journal Year: 2023, Volume and Issue: 21(4), P. 2041 - 2084

Published: March 16, 2023

Language: Английский

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Environmental trade-offs of direct air capture technologies in climate change mitigation toward 2100

Nature Communications, Journal Year: 2022, Volume and Issue: 13(1)

Published: June 25, 2022

Abstract Direct air capture (DAC) is critical for achieving stringent climate targets, yet the environmental implications of its large-scale deployment have not been evaluated in this context. Performing a prospective life cycle assessment two promising technologies series change mitigation scenarios, we find that electricity sector decarbonization and DAC technology improvements are both indispensable to avoid problem-shifting. Decarbonizing improves sequestration efficiency, but also increases terrestrial ecotoxicity metal depletion levels per tonne CO 2 sequestered via DAC. These can be reduced by material energy use efficiencies. exhibits regional impact variations, highlighting importance smart siting related system planning integration. aids achievement long-term performance however depend on sectoral actions, thus should suggest relaxation targets.

Language: Английский

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Optimal Design and Operation of Solid Sorbent Direct Air Capture Processes at Varying Ambient Conditions

Industrial & Engineering Chemistry Research, Journal Year: 2022, Volume and Issue: 61(34), P. 12649 - 12667

Published: Aug. 9, 2022

The economic, environmental, and energetic performance of direct air capture (DAC) processes based on solid sorbents depends significantly ambient conditions the availability renewable resources. High temperature or low humidity leads to higher energy consumption lower CO2 productivity; lack resources may make process not viable. With this work, we investigated how sorbent-based plants varies when changing system should be optimally designed operated match time-dependent variations. To end, formulated a new modeling framework, where thermodynamic adsorption is bridged mixed integer linear optimization via portable model DAC. vacuum-temperature swing cycle, whose was obtained with rate-based at varying for an exemplary sorbent representative different amine-functionalized materials. optimal design operation were (i) stand-alone DAC installed three geographical locations (ii) embedded in multi-energy hub aimed supplying demand from We found that can adjust operating variables according weather profile produced flexibly over time, example, by adopting buffer storage tank. Other strategies are suboptimal but might require less sophisticated control systems. Moreover, results suggest capturing costs smaller cold humid conditions. This conclusion holds both integrated However, latter, favorable only abundant available supplied costs, wind farms. These conclusions remain true wide range technical cost assumptions.

Language: Английский

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How to make climate-neutral aviation fly

Nature Communications, Journal Year: 2023, Volume and Issue: 14(1)

Published: July 6, 2023

The European aviation sector must substantially reduce climate impacts to reach net-zero goals. This reduction, however, not be limited flight CO2 emissions since such a narrow focus leaves up 80% of unaccounted for. Based on rigorous life-cycle assessment and time-dependent quantification non-CO2 impacts, here we show that, from technological standpoint, using electricity-based synthetic jet fuels compensating via direct air carbon capture storage (DACCS) can enable climate-neutral aviation. However, with continuous increase in traffic, fuel produced electricity renewables would exert excessive pressure economic natural resources. Alternatively, fossil DACCS require massive volumes prolong dependence fuels. Here, demonstrate that will fly if traffic is reduced limit the scale mitigate.

Language: Английский

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