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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15.10.2018

# New Publications

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Yu, Q. (2018): Direct capture of CO2 from ambient air using solid sorbents

Yu, Q. (2018): Direct capture of CO2 from ambient air using solid sorbents. Enschede: University of Twente. DOI:10.3990/1.9789036546300

"In this thesis, a novel process is developed and experimentally demonstrated, for CO2 capture from ambient air to produce CO2 enriched air to enhance microalgae cultivation. First, an amine functionalized sorbent is selected, initially based on its water and CO2 equilibrium adsorption capacity. Subsequently, the selected sorbent is characterized on its stability under different conditions for a wide range."

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15.06.2018

# Media

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Climate Science, Awareness and Solutions Blog: Get Out of Jail Free Card: Carbon Capture

"I am minimizing Communications, so that I can (really!) finish Sophie’s Planet, while also providing expert testimony for several lawsuits aimed at using the judicial branch of government to force the other branches of government to do their job.  However, there is enough popular misinterpretation of recent news about the cost of carbon capture that I should comment on that."

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09.06.2018

# New Publications

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Keith, David W.; et al. (2018): A Process for Capturing CO 2 from the Atmosphere

Keith, David W.; Holmes, Geoffrey; St. Angelo, David; Heidel, Kenton (2018): A Process for Capturing CO 2 from the Atmosphere. In Joule. DOI: 10.1016/j.joule.2018.05.006.

"We describe a process for capturing CO2 from the atmosphere in an industrial plant. The design captures ∼1 Mt-CO2/year in a continuous process using an aqueous KOH sorbent coupled to a calcium caustic recovery loop. We describe the design rationale, summarize performance of the major unit operations, and provide a capital cost breakdown developed with an independent consulting engineering firm."

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08.06.2018

# Media

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Atlantic: Climate Change Can Be Stopped by Turning Air Into Gasoline

"A Harvard professor says his company should be able to suck carbon dioxide out of the atmosphere, at industrial scales, by 2021."

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