11.02.2019

# New Publications

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Sujan, A.; et al. (2019): Direct CO2 capture from air using poly(ethyleneimine)-loaded polymer/silica fiber sorbents

Sujan, A.; Pang, S.; Zhu, G.; Jones, C.; Lively, R. (2019): Direct CO2 capture from air using poly(ethyleneimine)-loaded polymer/silica fiber sorbents. In: ACS Sustainable Chem. Eng. DOI: 10.1021/acssuschemeng.8b06203.

"Direct CO2 capture from atmospheric air is gaining increased attention as one of the most scalable negative carbon approaches available to tackle climate change if coupled with the sequestration of CO2 geologically. [...] In this work, we describe the application of polymer/silica fiber sorbents functionalized with a primary amine rich polymer, poly(ethyleneimine) (PEI), for DAC. Monolithic fiber sorbents composed of cellulose acetate (CA) and SiO2 are synthesized via the dry-jet, wet quench spinning technique."

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28.01.2019

# New Publications

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Zhao, R.; et al. (2019): Thermodynamic exploration of temperature vacuum swing adsorption for direct air capture of carbon dioxide in buildings

Zhao, R.; Liu, L.; Zhao, L.; Deng, S.; Li, S.; Zhang, Y.; Li, H. (2019): Thermodynamic exploration of temperature vacuum swing adsorption for direct air capture of carbon dioxide in buildings. In: Energy Conversion and Management 183, S. 418–426. DOI: 10.1016/j.enconman.2019.01.009.

"Abrupt climate change such as the loss of Arctic sea-ice area urgently needs negative emissions technologies. The potential application of direct air capture of carbon dioxide from indoor air and outdoor air in closed buildings or crowded places has been discussed in this paper. From the aspects of carbon reduction and indoor comfort, the ventilation system integrating a capture device is of great value in practical use."

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14.01.2019

# Media

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TechCrunch: Oil and gas giants Chevron and Occidental are backing tech to combat carbon emissions

"Carbon Engineering, a Canadian company developing technology to remove carbon dioxide from the atmosphere and process it for use in enhanced oil recovery or in the creation of new synthetic fuels, has locked in financing from two big industry backers — Chevron and Occidental Petroleum — to bring its products to market."

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24.12.2018

# Media

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Government Europa: Climeworks direct air capture to partner with Coca-Cola

"Climeworks will partner with Coca-Cola HBC Switzerland, the Swiss bottling subsidiary of Coca-Cola, to introduce Climeworks direct air capture into its beverages."

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10.12.2018

# New Publications

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Mandal, S.; et al. (2019): Transforming Atmospheric CO2 into Alternative Fuels. A Metal-Free Approach under Ambient Conditions

Mandal, S.; Sau, S.; Bhattacharjee, R.; Hota, P.; Vardhanapu, P.; vijaykumar, g. et al. (2019): Transforming Atmospheric CO2 into Alternative Fuels. A Metal-Free Approach under Ambient Conditions. In: Chem. Sci. DOI: 10.1039/C8SC03581D.

"The capture of CO2 from air can even proceed in the solid state via the formation of a bicarbonate complex (aNHC-H, HCO3, B(OH)3), which was also structurally characterized. A detailed mechanism for this process is proposed based on tandem density functional theory calculations and experiments."

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26.11.2018

# New Publications

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Gundersen, C.; et al. (2018): Growth response of environmental bacteria under exposure to nitramines from CO2-capture

Gundersen, C.; Andersen, T.; Vogt, R.; Allison, S. (2018): Growth response of environmental bacteria under exposure to nitramines from CO2-capture. In: International Journal of Greenhouse Gas Control 79, S. 248–251. DOI: 10.1016/j.ijggc.2018.11.003.

"Results from this study provide insight into important processes of bacterial response to nitramines that merit further investigation considering the ongoing implementation of CO2 capture technology."

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21.11.2018

# Media

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Energyworld: Attractiveness of Air Capture: Time for a reality check

"The Intergovernmental Panel on Climate Change (IPCC) released a major report a month ago, which is almost a status update on the fight against climate change – and the outlook is very grim. We seem to be coming close to our climate rope and the time is running out. In this context, the report talks about Air Capture, capturing carbon dioxide (CO2) from ambient air, as a silver bullet that can help “save humanity”. I wanted to present a different take on Air Capture given my past experience with it."

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19.11.2018

# New Publications

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Siegel, R. (2018): The Artificial Tree

Siegel, R. (2018): The Artificial Tree. In: Mechanical Engineering 140 (11), S. 34. DOI: 10.1115/1.2018-NOV-2.

"Inside Arizona State University in Tempe’s lab sit the parts for an artificial tree, capable of extracting carbon dioxide 1,000 times faster than a natural tree. The research team is methodically transforming the process into a machine through which carbon dioxide doesn’t get turned into fruit or roots or tree trunks, as it does with a natural tree, but simply gets collected by resin in a reversible chemical process. This article takes a closer look at the process."

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25.10.2018

# New Publications

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Brethomé, F.; et al. (2018): Direct air capture of CO2 via aqueous-phase absorption and crystalline-phase release using concentrated solar power

Brethomé, F.; Williams, N.; Seipp, C.; Kidder, M.; Custelcean, R. (2018): Direct air capture of CO2 via aqueous-phase absorption and crystalline-phase release using concentrated solar power. In: Nat. Energy 3 (7), S. 553–559. DOI: 10.1038/s41560-018-0150-z.

"Direct air capture of carbon dioxide offers the prospect of permanently lowering the atmospheric CO2 concentration, providing that economical and energy-efficient technologies can be developed and deployed on a large scale. Here, we report an approach to direct air capture, at the laboratory scale, using mostly off-the-shelf materials and equipment. First, CO2 absorption is achieved with readily available and environmentally friendly aqueous amino acid solutions (glycine and sarcosine) using a household humidifier."

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22.10.2018

# New Publications

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Turvey, C.; et al. (2018): Hydrotalcites and hydrated Mg-carbonates as carbon sinks in serpentinite mineral wastes from the Woodsreef chrysotile mine, New South Wales, Australia

Turvey, C.; Wilson, S.; Hamilton, J.; Tait, A.; McCutcheon, J.; Beinlich, A. et al. (2018): Hydrotalcites and hydrated Mg-carbonates as carbon sinks in serpentinite mineral wastes from the Woodsreef chrysotile mine, New South Wales, Australia. Controls on carbonate mineralogy and efficiency of CO2 air capture in mine tailings. In: International Journal of Greenhouse Gas Control 79, S. 38–60. DOI: 10.1016/j.ijggc.2018.09.015.

"Carbon mineralisation of ultramafic mine tailings can reduce net emissions of anthropogenic carbon dioxide by reacting Mg-silicate and hydroxide minerals with atmospheric CO2 to produce carbonate minerals. We investigate the controls on carbonate mineral formation at the derelict Woodsreef chrysotile mine (New South Wales, Australia). Quantitative XRD was used to understand how mineralogy changes with depth into the tailings pile, and shows that hydromagnesite [Mg5(CO3)4(OH)2·4H2O], is present in shallow tailings material (<40 cm), while coalingite [Mg10Fe3+2(CO3)(OH)24·2H2O] and pyroaurite [Mg6Fe3+2(CO3)(OH)16·4H2O] are forming deeper in the tailings material."

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