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Direct air capture

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solution for direct air capture marks a significant innovation. This technology, still under refinement, stands out for its minimal energy requirements and its novel chemical process that enables efficient CO2 capture and release. This method's potential for scalability and its environmental benefits
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rely on semi-permeable membranes. This method requires little water and has a smaller footprint. Typically polymeric membranes, either glassy or rubbery, are used for direct air capture. Glassy membranes typically exhibit high selectivity with respect to Carbon Dioxide; however, they also have low
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In contrast to carbon capture and storage (CCS) which captures emissions from a point source such as a factory, DAC reduces the carbon dioxide concentration in the atmosphere as a whole. Thus, DAC can be used to capture emissions that originated in non-stationary sources such as airplanes.
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On May 8, 2024, Climeworks activated the world's largest DAC planet named Mammoth in Iceland. It will be able to pull 36,000 tons of carbon from the atmosphere a year at full capacity, according to Climeworks, equivalent to taking around 7,800 gas-powered cars off the road for a year.
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DAC was suggested in 1999 and is still in development. Several commercial plants are planned or in operation in Europe and the US. Large-scale DAC deployment may be accelerated when connected with economical applications or policy incentives.
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when dry, and releases it when exposed to moisture. A large part of the energy for the process is supplied by the latent heat of phase change of water. The technology requires further research to determine its cost-effectiveness.
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from the CCS network, and leakage from geological formations. Because DAC can be deployed far from the source of pollution, synthetic fuel produced with this method can use already existing fuel transport infrastructure.
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Most commercial techniques require large fans to push ambient air through a filter. More recently, Ireland-based company Carbon Collect Limited has developed the MechanicalTree™ which simply stands in the wind to capture
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DAC is not an alternative to traditional, point-source carbon capture and storage (CCS), rather it is a complementary technology that could be utilized to manage carbon emissions from distributed sources,
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products (concentration > 99%), while other applications such as agriculture can function with more dilute products (~ 5%). Since the air that is processed through DAC originally contains 0.04% CO
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align it with ongoing efforts by other companies listed in this section, contributing to the global pursuit of effective and sustainable carbon capture solutions.
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Freitas RA Jr. Diamond Trees (Tropostats): A Molecular Manufacturing Based System for Compositional Atmospheric Homeostasis. IMM Report No. 43, 10 Feb 2010;
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permeabilities. Membrane capture of carbon dioxide is still in development and needs further research before it can be implemented on a larger scale.
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to the atmosphere than it would capture. Moreover, using DAC for enhanced oil recovery would cancel any supposed climate mitigation benefits.
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Castro-Muñoz, Roberto; Zamidi Ahmad, Mohd; Malankowska, Magdalena; Coronas, Joaquín (October 2022). "A new relevant membrane application: CO
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Among the specific chemical processes that are being explored, three stand out: causticization with alkali and alkali-earth hydroxides,
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European Commission. Directorate General for Research and Innovation; European Commission's Group of Chief Scientific Advisors (2018).
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a day. An economic study of its pilot plant conducted from 2015 to 2018 estimated the cost at $ 94–232 per tonne of atmospheric CO
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DAC relying on amine-based absorption demands significant water input. It was estimated, that to capture 3.3 gigatonnes of CO
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sources, since the process can be quite power intensive. Future innovations may reduce the energy intensity of this process.
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significantly reduces the energy cost of Direct Air Capture, and that its geometry lends itself to scaling for gigaton CO
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stream that can undergo dehydration and compression, while simultaneously regenerating the chemical media for reuse.
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Flow diagram of direct air capture process using sodium hydroxide as the absorbent and including solvent regeneration
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forming carbonate minerals. The DAC plant uses low-grade waste heat from the plant, effectively eliminating more CO
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annually, which is then mixed into concrete using technologies from CarbonCure. Heirloom also has a contract with
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from the air running through a building's existing ventilation units inside buildings for removing atmospheric CO
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Partnering with California energy company Greyrock, Carbon Engineering converts a portion of its concentrated CO
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product formed from the captured gas. Forms of carbon sequestration such as geological storage require pure CO
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Erans, María; Sanz-Pérez, Eloy S.; Hanak, Dawid P.; Clulow, Zeynep; Reiner, David M.; Mutch, Greg A. (2022).
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Sanz-Pérez, Eloy S.; Murdock, Christopher R.; Didas, Stephanie A.; Jones, Christopher W. (12 October 2016).
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on those markets. For the end-to-end process to remain net carbon negative, DAC machines must be powered by
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DAC also requires much greater energy input in comparison to traditional capture from point sources, like
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from the air and turn it into zero-net-carbon gasoline and jet fuel. The company uses a DAC technology,
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Lackner, Klaus S. (1 February 2013). "The thermodynamics of direct air capture of carbon dioxide".
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is mineralized to concrete, stored or utilized to create synthetic products like food, textile or
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which intends to start a DAC‑to‑fuel business using Global Thermostat's technology.
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Sanz-Pérez, Eloy S.; Murdock, Christopher R.; Didas, Stephanie A.; Jones, Christopher W. (2016).
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and air. As of 2023 it is estimated that the total system cost is over $ 1,000 per tonne of CO
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Carbon Engineering is a commercial DAC company founded in 2009 and backed, among others, by
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Service, Robert (7 June 2018). "Cost plunges for capturing carbon dioxide from the air".
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from the atmosphere. The company has projects ranging from 40 to 50,000 tonnes per year.
2516:"Carbon capture technology has been around for decades — here's why it hasn't taken off" 2244: 1972: 1741: 1682: 1169: 1118:"The Role of Direct Air Capture in Mitigation of Anthropogenic Greenhouse Gas Emissions" 1027:"Direct air capture: process technology, techno-economic and socio-political challenges" 833:
from the air directly into process electrolytes, where it is converted into alcohols by
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Climeworks's first industrial-scale DAC plant, which started operation in May 2017 in
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Keith, David W.; Holmes, Geoffrey; St. Angelo, David; Heide, Kenton (7 June 2018).
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because, at over US$ 1000, the cost per tonne of carbon dioxide is many times the
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An example of what Direct Air Capture could look like and how the process works.
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stream. Sodium hydroxide can be recycled from sodium carbonate in a process of
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Smit, Berend; Reimer, Jeffrey A.; Oldenburg, Curtis M.; Bourg, Ian C (2014).
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per year. To lower its energy requirements, the plant uses heat from a local
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with Chemicals: A Technology Assessment for the APS Panel on Public Affairs"
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One of the largest hurdles to implementing DAC is the cost of separating CO
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Beuttler, Christoph; Charles, Louise; Wurzbacher, Jan (21 November 2019).
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system, it can produce a negative emissions plant, but it would require a
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The company stated that it costs around $ 600 to capture one tonne of CO
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a year would require 300 km of water, or 4% of the water used for
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Large-scale DAC deployment can be accelerated by policy incentives.
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Nikulshina, V.; Ayesa, N.; Gálvez, M.E.; Steinfeld, A. (July 2008).
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research program. The CarbFix2 pilot plant project runs alongside a
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plant. After the capture, DAC generates a concentrated stream of CO
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through the application of energy (namely heat), resulting in a CO
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Global Thermostat is private company founded in 2010, located in
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reported growth in direct air capture global operating capacity.
3957: 3662: 3398: 2953: 2865: 2746: 2698: 2660: 2466:"In Silicon Valley, the Quest to Make Gasoline Out of Thin Air" 2198:"From thin air to stone: greenhouse gas test starts in Iceland" 2351: 837:. The alcohols are then separated from the electrolytes using 363:
Carbon dioxide scrubber § Metal-organic frameworks (MOFs)
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Cooperative Mechanisms under Article 6 of the Paris Agreement
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Fasihi, Mahdi; Efimova, Olga; Breyer, Christian (July 2019).
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is injected 700 meters under the ground and mineralizes into
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is used to increase vegetable yields in a nearby greenhouse.
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Proponents of DAC argue that it is an essential component of
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Quarton, Christopher J.; Samsatli, Sheila (1 January 2020).
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while reducing the building's net emissions. The captured CO
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in which the latter will purchase 315,000 metric tons of CO
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Sigurdardottir, Ragnhildur; Rathi, Akshat (6 March 2021).
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Negative Emissions Technologies and Reliable Sequestration
1487:"Direct Air Capture: Recent developments and future plans" 53:) is the use of chemical or physical processes to extract 4096:
Illustrative model of greenhouse effect on climate change
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These applications require different concentrations of CO
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Soletair Power is a startup founded in 2016, located in
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Heirloom's first direct air capture facility opened in
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from air—Thermodynamic and thermogravimetric analyses"
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from ambient air is about 250 kWh per tonne of CO
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United Nations Framework Convention on Climate Change
1837:'Air Capture' Could Be Key to Slowing Global Warming" 1336:"Direct Air Capture / A key technology for net zero" 332:
In a cyclical process designed in 2012 by professor
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Method of carbon capture from carbon dioxide in air
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The company claims this 'passive capture' of CO 77:and be a "negative emissions technology" (NET). 4137:Intergovernmental Panel on Climate Change (IPCC) 1399:Introduction to carbon capture and sequestration 1203:"Carbon-dioxide-removal options are multiplying" 1236: 1234: 1723: 1721: 2877:History of climate change policy and politics 2672: 500:creating carbon-neutral concrete alternative, 8: 2009:"How Bill Gates aims to clean up the planet" 596:, including gasoline, diesel, and jet fuel. 285:levels, has earned the technology a name of 2994:Atlantic meridional overturning circulation 1795:"400 PPM: Can Artificial Trees Help Pull CO 1648:"400 PPM: Can Artificial Trees Help Pull CO 1300:"Direct Air Capture (Technology Factsheet)" 277:The idea of using many small dispersed DAC 67:direct air carbon capture and sequestration 4218: 4206: 3965: 3954: 3673: 3659: 3408: 3395: 2963: 2950: 2862: 2756: 2743: 2695: 2679: 2665: 2657: 456:electricity would end up releasing more CO 138:When combined with long-term storage of CO 3764:Adaptation strategies on the German coast 2902:United Nations Climate Change conferences 2252: 2146: 1980: 1955:Ranjan, Manya; Herzog, Howard J. (2011). 1926: 1537: 1258: 1133: 1100: 1052: 1042: 348:called Marathon MSA, which absorbs air CO 250:binds to solid sorbent in the process of 3468:Co-benefits of climate change mitigation 735:Global Thermostat has closed deals with 206:Most commercial techniques use a liquid 37: 29: 3824:National Adaptation Programme of Action 3613:Land use, land-use change, and forestry 2514:Clifford, Catherine (1 February 2021). 972: 468:Practical applications of DAC include: 367:Other substances which can be used are 3473:Economics of climate change mitigation 3436:Gold Standard (carbon offset standard) 2782:Scientific consensus on climate change 2043:Diamandis, Peter H. (23 August 2019). 2038: 2036: 2034: 2032: 2030: 2028: 2026: 2024: 2022: 1435: 1433: 1431: 1429: 1427: 1391: 1389: 1387: 1385: 611:, which removes a certain amount of CO 503:enhancing productivity of algae farms, 344:can be efficiently separated using an 4132:Coupled Model Intercomparison Project 2553:from the original on 21 November 2021 2522:from the original on 21 November 2021 2208:from the original on 1 September 2019 2076: 2074: 2072: 2070: 2002: 2000: 1998: 1996: 1994: 1992: 1950: 1948: 1946: 1882:from the original on 25 December 2017 1847:from the original on 3 September 2019 1826: 1824: 1809:from the original on 4 September 2019 1768:Lenfest Center for Sustainable Energy 1713:http://www.imm.org/Reports/rep043.pdf 1662:from the original on 4 September 2019 1575: 1573: 1571: 1569: 1567: 1565: 1480: 1478: 1476: 1461:from the original on 3 September 2019 1294: 1292: 1290: 1288: 1286: 1284: 1282: 1280: 1278: 1074: 1072: 73:)), the overall process will achieve 7: 4154:Representative Concentration Pathway 3100:Tipping points in the climate system 2776:Carbon dioxide in Earth's atmosphere 2584:from the original on 12 January 2021 2572:Takahashi, Dean (25 February 2020). 2476:from the original on 29 January 2020 2384:from the original on 9 November 2018 2314:Proctor, Darrell (1 December 2017). 2170:Simon, Frédéric (23 November 2021). 1687:BBC News | Science & Environment 1197: 1195: 984: 982: 980: 978: 976: 891:Center for Negative Carbon Emissions 421:, due to the low concentration of CO 338:Center for Negative Carbon Emissions 3925:Nationally determined contributions 3635:Individual action on climate change 2845:World energy supply and consumption 2445:from the original on 6 October 2019 2326:from the original on 26 August 2019 2295:from the original on 26 August 2019 2055:from the original on 29 August 2019 1693:from the original on 14 August 2017 1497:from the original on 26 August 2019 1352:from the original on 10 April 2022. 1316:from the original on 26 August 2019 1221:"The many prices of carbon dioxide" 739:(which aims to use DAC to source CO 4064:Fixed anvil temperature hypothesis 2464:Brustein, Joshua (30 April 2019). 2433:Service, Robert F. (3 July 2019). 2196:Doyle, Alister (11 October 2017). 1831:Schiffman, Richard (23 May 2016). 1683:"'Artificial trees' to cut carbon" 1402:. London: Imperial College Press. 1031:Energy & Environmental Science 743:for its carbonated beverages) and 441:" connected to DAC installations. 65:in safe long-term storage (called 25: 3991:Satellite temperature measurement 3596:forestry for carbon sequestration 2882:History of climate change science 2414:from the original on 28 July 2021 1343:International Energy Agency (IEA) 258:is then desorbed from the solid. 254:. Through heat and vacuum, the CO 4217: 4205: 4194: 4193: 4181: 3842:Climate Change Performance Index 3221:Destruction of cultural heritage 2615:from the original on 28 May 2022 2495:Plumer, Brad (9 November 2023). 1681:Burns, Judith (27 August 2009). 927:Within the research domain, the 446:carbon capture and storage (CCS) 295: 86:carbon capture and storage (CCS) 3981:Instrumental temperature record 3932:Sustainable Development Goal 13 2345:Proctor, Darrell (8 May 2024). 2227:Tollefson, Jeff (7 June 2018). 2007:Vidal, John (4 February 2018). 813:Is a start-up company based in 728:The company claims to remove CO 4049:Climate variability and change 3085:Retreat of glaciers since 1850 2634:Kazmer, Rick (10 April 2024). 1866:Yarris, Lynn (17 March 2015). 1485:Chalmin, Anja (16 July 2019). 1178:10.1016/j.apenergy.2019.113936 450:carbon-free electricity source 346:anionic exchange polymer resin 1: 4159:Shared Socioeconomic Pathways 3694:Climate emergency declaration 2603:Patel, Prachi (28 May 2022). 2148:10.1016/j.jclepro.2019.03.086 2135:Journal of Cleaner Production 1868:"A Better Way of Scrubbing CO 1793:Biello, David (16 May 2013). 1646:Biello, David (16 May 2013). 849:when used, emitting no net CO 791:, that can produce synthetic 480:carbon-neutral synthetic fuel 4142:IPCC Sixth Assessment Report 3368:Middle East and North Africa 1982:10.1016/j.egypro.2011.02.193 1957:"Feasibility of air capture" 1907:Chemical Engineering Journal 1750:10.1016/j.energy.2012.09.012 1621:Chemical Engineering Journal 857:Heirloom Carbon Technologies 717:, New York, with a plant in 497:improving concrete strength, 444:When DAC is combined with a 1905:direct air capture (DAC)". 1539:10.1021/acs.chemrev.6b00173 1260:10.1021/acs.chemrev.6b00173 1102:10.1016/j.joule.2018.05.006 1081:"A Process for Capturing CO 603:solution. It reacts with CO 184:International Energy Agency 4282: 3976:Global surface temperature 3867:Popular culture depictions 3779:Ecosystem-based adaptation 3509:Carbon capture and storage 3431:Carbon offsets and credits 2285:"Public Update on CarbFix" 2254:10.1038/d41586-018-05357-w 1345:. April 2022. p. 18. 806: 622: 562: 439:small nuclear power plants 360: 234:and precipitates a stable 18:Carbon dioxide air capture 4188:Climate change portal 4175: 4081:Extreme event attribution 3964: 3953: 3704:School Strike for Climate 3672: 3658: 3583:Climate-smart agriculture 3407: 3394: 2962: 2949: 2872: 2861: 2755: 2742: 2725:Climate change adaptation 2720:Climate change mitigation 2715:Effects of climate change 2705: 2694: 1919:10.1016/j.cej.2022.137047 1633:10.1016/j.cej.2007.09.007 1441:"Direct Air Capture of CO 946:Artificial photosynthesis 918:— a startup in London, UK 916:Mission Zero Technologies 839:carbon nanotube membranes 397:climate change mitigation 4091:Global warming potential 3898:International agreements 3545:Preserving and enhancing 2984:Arctic methane emissions 2906:Years in climate change 2813:Greenhouse gas emissions 2710:Causes of climate change 1135:10.3389/fclim.2019.00010 931:team's development of a 895:Arizona State University 701:than they both produce. 639:waste incineration plant 369:metal–organic frameworks 357:Metal-organic frameworks 4122:Climate change scenario 3774:Disaster risk reduction 3426:Carbon emission trading 3236:U.S. insurance industry 3211:Civilizational collapse 3058:sea surface temperature 1590:10.1126/science.aau4107 993:. Publications Office. 923:Innovations in Research 845:sources, the fuels are 246:. Alternatively, the CO 4246:Carbon dioxide removal 4115:Research and modelling 3799:Nature-based solutions 3619:Nature-based solutions 3561:Carbon dioxide removal 3478:Fossil fuel divestment 3463:Climate risk insurance 3373:Small island countries 2989:Arctic sea ice decline 1491:Geoengineering Monitor 1307:Geoengineering Monitor 951:Carbon dioxide removal 817:which launched out of 686:. In this approach, CO 680:geothermal power plant 336:, the director of the 328:Moisture swing sorbent 273:Other explored methods 187: 80:The carbon dioxide (CO 75:carbon dioxide removal 43: 35: 4076:Earth's energy budget 3959:Background and theory 3847:Climate crisis (term) 3519:Fossil fuel phase-out 3413:Economics and finance 3378:by individual country 3320:By country and region 3295:Security and conflict 3290:Psychological impacts 2974:Abrupt climate change 2897:Charles David Keeling 2730:By country and region 1518:"Direct Capture of CO 506:enrichment of air in 473:enhanced oil recovery 454:fossil-fuel-generated 181: 41: 33: 3905:Glasgow Climate Pact 3566:Carbon sequestration 3136:Mass mortality event 1122:Frontiers in Climate 1085:from the Atmosphere" 910:Energy Impact Center 821:in 2019 to remove CO 684:Hellisheidi, Iceland 492:carbon sequestration 486:beverage carbonation 391:Environmental impact 4256:Climate engineering 4044:Climate sensitivity 3819:The Adaptation Fund 3275:Infectious diseases 3177:Social and economic 2374:"Global Thermostat" 2291:. 3 November 2017. 2245:2018Natur.558..173T 1973:2011EnPro...4.2869R 1803:Scientific American 1774:on 20 December 2012 1742:2013Ene....50...38L 1656:Scientific American 1532:(19): 11840–11876. 1253:(19): 11840–11876. 1227:. 20 November 2023. 1209:. 20 November 2023. 1170:2020ApEn..25713936Q 853:to the atmosphere. 719:Huntsville, Alabama 609:potassium carbonate 601:potassium hydroxide 599:The company uses a 4266:Direct air capture 3615:(LULUCF and AFOLU) 3587:Forest management 3571:Direct air capture 3536:Sustainable energy 3493:Net zero emissions 3488:Low-carbon economy 3483:Green Climate Fund 3270:Indigenous peoples 3168:Plant biodiversity 2956:Effects and issues 2501:The New York Times 1044:10.1039/D1EE03523A 902:– a subsidiary of 565:Carbon Engineering 559:Carbon Engineering 531:fugitive emissions 307:. You can help by 188: 174:Methods of capture 47:Direct air capture 44: 36: 4233: 4232: 4171: 4170: 4167: 4166: 4106:Radiative forcing 3949: 3948: 3945: 3944: 3769:Adaptive capacity 3654: 3653: 3650: 3649: 3514:Energy transition 3390: 3389: 3386: 3385: 3105:Tropical cyclones 3031:Urban heat island 2945: 2944: 2857: 2856: 2853: 2852: 2818:Carbon accounting 2772:Greenhouse effect 2738: 2737: 2378:Global Thermostat 2099:978-0-309-48452-7 1522:from Ambient Air" 1008:978-92-79-82006-9 709:Global Thermostat 452:. The use of any 340:(CNCE), dilute CO 325: 324: 289:in popular media. 152:emissions trading 88:which captures CO 16:(Redirected from 4273: 4221: 4220: 4209: 4208: 4197: 4196: 4186: 4185: 4184: 4149:Paleoclimatology 3966: 3955: 3716:Ecological grief 3699:Climate movement 3674: 3660: 3640:Plant-based diet 3531:Renewable energy 3409: 3396: 3231:Economic impacts 3158:Invasive species 3014:Coastal flooding 2964: 2951: 2887:Svante Arrhenius 2863: 2833:from agriculture 2823:Carbon footprint 2808:Greenhouse gases 2757: 2744: 2696: 2681: 2674: 2667: 2658: 2651: 2650: 2648: 2646: 2631: 2625: 2624: 2622: 2620: 2600: 2594: 2593: 2591: 2589: 2569: 2563: 2562: 2560: 2558: 2538: 2532: 2531: 2529: 2527: 2511: 2505: 2504: 2492: 2486: 2485: 2483: 2481: 2461: 2455: 2454: 2452: 2450: 2430: 2424: 2423: 2421: 2419: 2410:. 28 June 2021. 2400: 2394: 2393: 2391: 2389: 2370: 2364: 2363: 2361: 2359: 2342: 2336: 2335: 2333: 2331: 2311: 2305: 2304: 2302: 2300: 2281: 2275: 2274: 2256: 2224: 2218: 2217: 2215: 2213: 2193: 2187: 2186: 2184: 2182: 2176:www.euractiv.com 2167: 2161: 2160: 2150: 2126: 2120: 2119: 2078: 2065: 2064: 2062: 2060: 2040: 2017: 2016: 2004: 1987: 1986: 1984: 1952: 1941: 1940: 1930: 1898: 1892: 1891: 1889: 1887: 1863: 1857: 1856: 1854: 1852: 1828: 1819: 1818: 1816: 1814: 1790: 1784: 1783: 1781: 1779: 1770:. Archived from 1764:"Carbon Capture" 1760: 1754: 1753: 1725: 1716: 1709: 1703: 1702: 1700: 1698: 1678: 1672: 1671: 1669: 1667: 1643: 1637: 1636: 1608: 1602: 1601: 1577: 1560: 1559: 1541: 1526:Chemical Reviews 1513: 1507: 1506: 1504: 1502: 1482: 1471: 1470: 1468: 1466: 1460: 1449: 1437: 1422: 1421: 1393: 1380: 1379: 1377: 1375: 1360: 1354: 1353: 1351: 1340: 1332: 1326: 1325: 1323: 1321: 1315: 1304: 1296: 1273: 1272: 1262: 1247:Chemical Reviews 1238: 1229: 1228: 1217: 1211: 1210: 1199: 1190: 1189: 1155: 1146: 1140: 1139: 1137: 1113: 1107: 1106: 1104: 1095:(8): 1573–1594. 1076: 1067: 1066: 1056: 1046: 1037:(4): 1360–1405. 1022: 1013: 1012: 986: 904:Reykjavik Energy 835:electrocatalysis 809:Prometheus Fuels 803:Prometheus Fuels 799:from buildings. 795:from captured CO 675: 671: 660:Reykjavik Energy 382:separation of CO 320: 317: 299: 292: 287:artificial trees 236:sodium carbonate 228:sodium hydroxide 160:renewable energy 21: 4281: 4280: 4276: 4275: 4274: 4272: 4271: 4270: 4236: 4235: 4234: 4229: 4182: 4180: 4163: 4110: 4101:Orbital forcing 3995: 3960: 3941: 3915:Paris Agreement 3893: 3889:Warming stripes 3828: 3794:Managed retreat 3789:Loss and damage 3750: 3684:Business action 3668: 3646: 3623: 3546: 3540: 3497: 3458:Climate finance 3403: 3382: 3314: 3172: 3148:Extinction risk 3124:Flora and fauna 3119: 3080:Permafrost thaw 3075:Ozone depletion 3004:Extreme weather 2958: 2941: 2868: 2849: 2786: 2751: 2734: 2701: 2690: 2685: 2655: 2654: 2644: 2642: 2633: 2632: 2628: 2618: 2616: 2602: 2601: 2597: 2587: 2585: 2571: 2570: 2566: 2556: 2554: 2540: 2539: 2535: 2525: 2523: 2513: 2512: 2508: 2494: 2493: 2489: 2479: 2477: 2463: 2462: 2458: 2448: 2446: 2432: 2431: 2427: 2417: 2415: 2402: 2401: 2397: 2387: 2385: 2372: 2371: 2367: 2357: 2355: 2344: 2343: 2339: 2329: 2327: 2313: 2312: 2308: 2298: 2296: 2283: 2282: 2278: 2226: 2225: 2221: 2211: 2209: 2195: 2194: 2190: 2180: 2178: 2169: 2168: 2164: 2128: 2127: 2123: 2100: 2080: 2079: 2068: 2058: 2056: 2049:Singularity Hub 2042: 2041: 2020: 2006: 2005: 1990: 1961:Energy Procedia 1954: 1953: 1944: 1904: 1900: 1899: 1895: 1885: 1883: 1871: 1865: 1864: 1860: 1850: 1848: 1836: 1830: 1829: 1822: 1812: 1810: 1798: 1792: 1791: 1787: 1777: 1775: 1762: 1761: 1757: 1727: 1726: 1719: 1710: 1706: 1696: 1694: 1680: 1679: 1675: 1665: 1663: 1651: 1645: 1644: 1640: 1616: 1610: 1609: 1605: 1579: 1578: 1563: 1521: 1515: 1514: 1510: 1500: 1498: 1484: 1483: 1474: 1464: 1462: 1458: 1454:. 1 June 2011. 1447: 1444: 1439: 1438: 1425: 1410: 1395: 1394: 1383: 1373: 1371: 1362: 1361: 1357: 1349: 1338: 1334: 1333: 1329: 1319: 1317: 1313: 1309:. 24 May 2018. 1302: 1298: 1297: 1276: 1240: 1239: 1232: 1219: 1218: 1214: 1201: 1200: 1193: 1153: 1148: 1147: 1143: 1115: 1114: 1110: 1084: 1078: 1077: 1070: 1024: 1023: 1016: 1009: 988: 987: 974: 969: 942: 925: 887: 885:Other companies 880: 872: 859: 852: 832: 824: 811: 805: 798: 778: 774: 770: 753: 742: 731: 724: 711: 700: 689: 673: 672:Union's Horizon 669: 658:partnered with 651: 644: 636: 627: 621: 614: 606: 591: 584: 580: 567: 561: 556: 549: 545: 540: 524: 520: 516: 466: 459: 436: 432: 428: 424: 409: 401:Paris Agreement 393: 385: 377: 365: 359: 351: 343: 330: 321: 315: 312: 305:needs expansion 284: 275: 257: 249: 241: 233: 225: 202: 198: 194: 176: 141: 134: 130: 107: 91: 83: 60: 28: 23: 22: 15: 12: 11: 5: 4279: 4277: 4269: 4268: 4263: 4261:Sustainability 4258: 4253: 4251:Carbon dioxide 4248: 4238: 4237: 4231: 4230: 4228: 4227: 4215: 4203: 4191: 4176: 4173: 4172: 4169: 4168: 4165: 4164: 4162: 4161: 4156: 4151: 4146: 4145: 4144: 4134: 4129: 4124: 4118: 4116: 4112: 4111: 4109: 4108: 4103: 4098: 4093: 4088: 4083: 4078: 4073: 4068: 4067: 4066: 4056: 4054:Cloud feedback 4051: 4046: 4041: 4036: 4035: 4034: 4029: 4024: 4019: 4009: 4003: 4001: 3997: 3996: 3994: 3993: 3988: 3983: 3978: 3972: 3970: 3962: 3961: 3958: 3951: 3950: 3947: 3946: 3943: 3942: 3940: 3939: 3934: 3929: 3928: 3927: 3922: 3912: 3910:Kyoto Protocol 3907: 3901: 3899: 3895: 3894: 3892: 3891: 3886: 3885: 3884: 3879: 3874: 3864: 3862:Media coverage 3859: 3854: 3852:Climate spiral 3849: 3844: 3838: 3836: 3830: 3829: 3827: 3826: 3821: 3816: 3811: 3806: 3801: 3796: 3791: 3786: 3781: 3776: 3771: 3766: 3760: 3758: 3752: 3751: 3749: 3748: 3743: 3741:Public opinion 3738: 3733: 3728: 3723: 3718: 3713: 3708: 3707: 3706: 3696: 3691: 3689:Climate action 3686: 3680: 3678: 3670: 3669: 3663: 3656: 3655: 3652: 3651: 3648: 3647: 3645: 3644: 3643: 3642: 3631: 3629: 3625: 3624: 3622: 3621: 3616: 3610: 3609: 3608: 3603: 3601:REDD and REDD+ 3598: 3593: 3585: 3580: 3578:Carbon farming 3575: 3574: 3573: 3568: 3558: 3552: 3550: 3542: 3541: 3539: 3538: 3533: 3528: 3523: 3522: 3521: 3511: 3505: 3503: 3499: 3498: 3496: 3495: 3490: 3485: 3480: 3475: 3470: 3465: 3460: 3455: 3450: 3445: 3440: 3439: 3438: 3428: 3423: 3417: 3415: 3405: 3404: 3399: 3392: 3391: 3388: 3387: 3384: 3383: 3381: 3380: 3375: 3370: 3365: 3360: 3355: 3350: 3345: 3340: 3335: 3330: 3324: 3322: 3316: 3315: 3313: 3312: 3310:Water security 3307: 3305:Water scarcity 3302: 3300:Urban flooding 3297: 3292: 3287: 3282: 3277: 3272: 3267: 3262: 3261: 3260: 3250: 3245: 3240: 3239: 3238: 3228: 3223: 3218: 3213: 3208: 3203: 3198: 3197: 3196: 3191: 3180: 3178: 3174: 3173: 3171: 3170: 3165: 3160: 3155: 3153:Forest dieback 3150: 3145: 3140: 3139: 3138: 3127: 3125: 3121: 3120: 3118: 3117: 3112: 3107: 3102: 3097: 3092: 3090:Sea level rise 3087: 3082: 3077: 3072: 3071: 3070: 3065: 3063:stratification 3060: 3055: 3050: 3045: 3035: 3034: 3033: 3028: 3018: 3017: 3016: 3006: 3001: 2996: 2991: 2986: 2981: 2976: 2970: 2968: 2960: 2959: 2954: 2947: 2946: 2943: 2942: 2940: 2939: 2938: 2937: 2932: 2927: 2922: 2917: 2912: 2904: 2899: 2894: 2889: 2884: 2879: 2873: 2870: 2869: 2866: 2859: 2858: 2855: 2854: 2851: 2850: 2848: 2847: 2842: 2841: 2840: 2835: 2830: 2828:Carbon leakage 2825: 2820: 2810: 2805: 2800: 2794: 2792: 2788: 2787: 2785: 2784: 2779: 2769: 2767:Climate system 2763: 2761: 2753: 2752: 2747: 2740: 2739: 2736: 2735: 2733: 2732: 2727: 2722: 2717: 2712: 2706: 2703: 2702: 2699: 2692: 2691: 2688:Climate change 2686: 2684: 2683: 2676: 2669: 2661: 2653: 2652: 2626: 2595: 2564: 2533: 2506: 2487: 2456: 2439:Science | AAAS 2425: 2395: 2365: 2337: 2320:POWER Magazine 2306: 2276: 2219: 2188: 2162: 2121: 2098: 2090:10.17226/25259 2066: 2018: 1988: 1942: 1902: 1893: 1869: 1858: 1834: 1820: 1799:from the Air?" 1796: 1785: 1755: 1717: 1704: 1673: 1652:from the Air?" 1649: 1638: 1627:(1–3): 62–70. 1614: 1603: 1561: 1519: 1508: 1472: 1442: 1423: 1408: 1381: 1355: 1327: 1274: 1230: 1212: 1191: 1158:Applied Energy 1141: 1108: 1082: 1068: 1014: 1007: 971: 970: 968: 965: 964: 963: 958: 953: 948: 941: 938: 924: 921: 920: 919: 913: 907: 897: 886: 883: 878: 870: 858: 855: 850: 847:carbon neutral 830: 822: 807:Main article: 804: 801: 796: 781:renewable fuel 776: 772: 768: 752: 751:Soletair Power 749: 740: 729: 722: 710: 707: 698: 687: 652:from the air. 649: 642: 634: 623:Main article: 620: 617: 615:from the air. 612: 604: 594:synthetic fuel 589: 582: 578: 575:Murray Edwards 563:Main article: 560: 557: 555: 552: 547: 543: 539: 536: 522: 518: 514: 511: 510: 504: 501: 498: 495: 489: 483: 478:production of 476: 465: 462: 457: 434: 430: 426: 422: 407: 392: 389: 383: 376: 373: 361:Main article: 358: 355: 349: 341: 329: 326: 323: 322: 316:September 2019 302: 300: 282: 274: 271: 255: 247: 239: 231: 230:reacts with CO 223: 200: 196: 192: 175: 172: 139: 132: 128: 105: 89: 81: 58: 55:carbon dioxide 26: 24: 14: 13: 10: 9: 6: 4: 3: 2: 4278: 4267: 4264: 4262: 4259: 4257: 4254: 4252: 4249: 4247: 4244: 4243: 4241: 4226: 4225: 4216: 4214: 4213: 4204: 4202: 4201: 4192: 4190: 4189: 4178: 4177: 4174: 4160: 4157: 4155: 4152: 4150: 4147: 4143: 4140: 4139: 4138: 4135: 4133: 4130: 4128: 4127:Climate model 4125: 4123: 4120: 4119: 4117: 4113: 4107: 4104: 4102: 4099: 4097: 4094: 4092: 4089: 4087: 4084: 4082: 4079: 4077: 4074: 4072: 4069: 4065: 4062: 4061: 4060: 4059:Cloud forcing 4057: 4055: 4052: 4050: 4047: 4045: 4042: 4040: 4037: 4033: 4030: 4028: 4025: 4023: 4020: 4018: 4015: 4014: 4013: 4010: 4008: 4005: 4004: 4002: 3998: 3992: 3989: 3987: 3984: 3982: 3979: 3977: 3974: 3973: 3971: 3967: 3963: 3956: 3952: 3938: 3935: 3933: 3930: 3926: 3923: 3921: 3918: 3917: 3916: 3913: 3911: 3908: 3906: 3903: 3902: 3900: 3896: 3890: 3887: 3883: 3880: 3878: 3875: 3873: 3870: 3869: 3868: 3865: 3863: 3860: 3858: 3855: 3853: 3850: 3848: 3845: 3843: 3840: 3839: 3837: 3835: 3834:Communication 3831: 3825: 3822: 3820: 3817: 3815: 3814:Vulnerability 3812: 3810: 3807: 3805: 3802: 3800: 3797: 3795: 3792: 3790: 3787: 3785: 3784:Flood control 3782: 3780: 3777: 3775: 3772: 3770: 3767: 3765: 3762: 3761: 3759: 3757: 3753: 3747: 3744: 3742: 3739: 3737: 3734: 3732: 3729: 3727: 3724: 3722: 3719: 3717: 3714: 3712: 3709: 3705: 3702: 3701: 3700: 3697: 3695: 3692: 3690: 3687: 3685: 3682: 3681: 3679: 3675: 3671: 3667: 3661: 3657: 3641: 3638: 3637: 3636: 3633: 3632: 3630: 3626: 3620: 3617: 3614: 3611: 3607: 3606:reforestation 3604: 3602: 3599: 3597: 3594: 3592: 3591:afforestation 3589: 3588: 3586: 3584: 3581: 3579: 3576: 3572: 3569: 3567: 3564: 3563: 3562: 3559: 3557: 3554: 3553: 3551: 3549: 3543: 3537: 3534: 3532: 3529: 3527: 3526:Nuclear power 3524: 3520: 3517: 3516: 3515: 3512: 3510: 3507: 3506: 3504: 3500: 3494: 3491: 3489: 3486: 3484: 3481: 3479: 3476: 3474: 3471: 3469: 3466: 3464: 3461: 3459: 3456: 3454: 3451: 3449: 3446: 3444: 3441: 3437: 3434: 3433: 3432: 3429: 3427: 3424: 3422: 3421:Carbon budget 3419: 3418: 3416: 3414: 3410: 3406: 3402: 3397: 3393: 3379: 3376: 3374: 3371: 3369: 3366: 3364: 3361: 3359: 3356: 3354: 3351: 3349: 3346: 3344: 3341: 3339: 3336: 3334: 3331: 3329: 3326: 3325: 3323: 3321: 3317: 3311: 3308: 3306: 3303: 3301: 3298: 3296: 3293: 3291: 3288: 3286: 3283: 3281: 3278: 3276: 3273: 3271: 3268: 3266: 3263: 3259: 3258:Mental health 3256: 3255: 3254: 3251: 3249: 3246: 3244: 3241: 3237: 3234: 3233: 3232: 3229: 3227: 3224: 3222: 3219: 3217: 3214: 3212: 3209: 3207: 3204: 3202: 3199: 3195: 3194:United States 3192: 3190: 3187: 3186: 3185: 3182: 3181: 3179: 3175: 3169: 3166: 3164: 3161: 3159: 3156: 3154: 3151: 3149: 3146: 3144: 3141: 3137: 3134: 3133: 3132: 3129: 3128: 3126: 3122: 3116: 3113: 3111: 3108: 3106: 3103: 3101: 3098: 3096: 3093: 3091: 3088: 3086: 3083: 3081: 3078: 3076: 3073: 3069: 3066: 3064: 3061: 3059: 3056: 3054: 3051: 3049: 3048:deoxygenation 3046: 3044: 3043:acidification 3041: 3040: 3039: 3036: 3032: 3029: 3027: 3024: 3023: 3022: 3019: 3015: 3012: 3011: 3010: 3007: 3005: 3002: 3000: 2997: 2995: 2992: 2990: 2987: 2985: 2982: 2980: 2977: 2975: 2972: 2971: 2969: 2965: 2961: 2957: 2952: 2948: 2936: 2933: 2931: 2928: 2926: 2923: 2921: 2918: 2916: 2913: 2911: 2908: 2907: 2905: 2903: 2900: 2898: 2895: 2893: 2890: 2888: 2885: 2883: 2880: 2878: 2875: 2874: 2871: 2864: 2860: 2846: 2843: 2839: 2838:from wetlands 2836: 2834: 2831: 2829: 2826: 2824: 2821: 2819: 2816: 2815: 2814: 2811: 2809: 2806: 2804: 2801: 2799: 2798:Deforestation 2796: 2795: 2793: 2789: 2783: 2780: 2777: 2773: 2770: 2768: 2765: 2764: 2762: 2758: 2754: 2750: 2745: 2741: 2731: 2728: 2726: 2723: 2721: 2718: 2716: 2713: 2711: 2708: 2707: 2704: 2697: 2693: 2689: 2682: 2677: 2675: 2670: 2668: 2663: 2662: 2659: 2641: 2640:The Cool Down 2637: 2630: 2627: 2614: 2610: 2609:IEEE Spectrum 2606: 2599: 2596: 2583: 2579: 2575: 2568: 2565: 2552: 2548: 2544: 2537: 2534: 2521: 2517: 2510: 2507: 2502: 2498: 2491: 2488: 2475: 2471: 2470:Bloomberg.com 2467: 2460: 2457: 2444: 2440: 2436: 2429: 2426: 2413: 2409: 2405: 2399: 2396: 2383: 2379: 2375: 2369: 2366: 2354: 2353: 2348: 2341: 2338: 2325: 2321: 2317: 2310: 2307: 2294: 2290: 2286: 2280: 2277: 2272: 2268: 2264: 2260: 2255: 2250: 2246: 2242: 2239:(7709): 173. 2238: 2234: 2230: 2223: 2220: 2207: 2203: 2199: 2192: 2189: 2177: 2173: 2166: 2163: 2158: 2154: 2149: 2144: 2140: 2136: 2132: 2125: 2122: 2117: 2113: 2109: 2105: 2101: 2095: 2091: 2087: 2083: 2077: 2075: 2073: 2071: 2067: 2054: 2050: 2046: 2039: 2037: 2035: 2033: 2031: 2029: 2027: 2025: 2023: 2019: 2014: 2010: 2003: 2001: 1999: 1997: 1995: 1993: 1989: 1983: 1978: 1974: 1970: 1967:: 2869–2876. 1966: 1962: 1958: 1951: 1949: 1947: 1943: 1938: 1934: 1929: 1924: 1920: 1916: 1912: 1908: 1897: 1894: 1881: 1877: 1873: 1862: 1859: 1846: 1842: 1838: 1827: 1825: 1821: 1808: 1804: 1800: 1789: 1786: 1773: 1769: 1765: 1759: 1756: 1751: 1747: 1743: 1739: 1735: 1731: 1724: 1722: 1718: 1714: 1708: 1705: 1692: 1688: 1684: 1677: 1674: 1661: 1657: 1653: 1642: 1639: 1634: 1630: 1626: 1622: 1618: 1607: 1604: 1599: 1595: 1591: 1587: 1583: 1576: 1574: 1572: 1570: 1568: 1566: 1562: 1557: 1553: 1549: 1545: 1540: 1535: 1531: 1527: 1523: 1512: 1509: 1496: 1492: 1488: 1481: 1479: 1477: 1473: 1457: 1453: 1446: 1436: 1434: 1432: 1430: 1428: 1424: 1419: 1415: 1411: 1409:9781783263295 1405: 1401: 1400: 1392: 1390: 1388: 1386: 1382: 1370:. 2 July 2021 1369: 1365: 1359: 1356: 1348: 1344: 1337: 1331: 1328: 1312: 1308: 1301: 1295: 1293: 1291: 1289: 1287: 1285: 1283: 1281: 1279: 1275: 1270: 1266: 1261: 1256: 1252: 1248: 1244: 1237: 1235: 1231: 1226: 1225:The Economist 1222: 1216: 1213: 1208: 1207:The Economist 1204: 1198: 1196: 1192: 1187: 1183: 1179: 1175: 1171: 1167: 1163: 1159: 1152: 1145: 1142: 1136: 1131: 1127: 1123: 1119: 1112: 1109: 1103: 1098: 1094: 1090: 1086: 1075: 1073: 1069: 1064: 1060: 1055: 1050: 1045: 1040: 1036: 1032: 1028: 1021: 1019: 1015: 1010: 1004: 1000: 999:10.2777/01532 996: 992: 985: 983: 981: 979: 977: 973: 966: 962: 959: 957: 954: 952: 949: 947: 944: 943: 939: 937: 934: 930: 922: 917: 914: 911: 908: 905: 901: 898: 896: 892: 889: 888: 884: 882: 876: 868: 864: 856: 854: 848: 844: 840: 836: 828: 820: 816: 810: 802: 800: 794: 790: 786: 782: 766: 762: 758: 750: 748: 746: 738: 733: 726: 720: 716: 708: 706: 702: 696: 693: 685: 681: 677: 665: 661: 657: 653: 646: 640: 632: 626: 618: 616: 610: 602: 597: 595: 586: 576: 572: 566: 558: 553: 551: 537: 535: 532: 526: 509: 505: 502: 499: 496: 493: 490: 487: 484: 482:and plastics, 481: 477: 474: 471: 470: 469: 463: 461: 455: 451: 447: 442: 440: 420: 415: 413: 404: 402: 398: 390: 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Index

Carbon dioxide air capture
Flow diagram of direct air capture process using sodium hydroxide as the absorbent and including solvent regeneration.

carbon dioxide
sequestered
carbon dioxide removal
carbon capture and storage (CCS)
point sources
cement
bioenergy
sequestration
utilization
alkaline
solvent
sorbents
emissions trading
carbon price
renewable energy

International Energy Agency
solvent
amine
caustic
absorb
sodium hydroxide
sodium carbonate
causticizing
chemisorption
carbonation
adsorbents

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