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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"WASHINGTON, D.C. — U.S. Senators Shelley Moore Capito (R-W.Va.) and John Barrasso (R-Wyo.) today joined with Sen. Sheldon Whitehouse (D-R.I.) to reintroduce S. 383, the Utilizing Significant Emissions with Innovative Technologies (USE IT) Act. The legislation is co-sponsored by EPW Committee Ranking Member Tom Carper (D-Del.), as well as Senators Tammy Duckworth (D-Ill.), Kevin Cramer (R-N.D.), Tina Smith (D-Minn.), Joe Manchin (D-W.Va.), and Mike Enzi (R-Wyo.). "

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German press release on Negative Emissions

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MacMartin, D.; Wang, W.; Kravitz, B.; Tilmes, S.; Richter, J.; Mills, M. (2019): Timescale for Detecting the Climate Response to Stratospheric Aerosol Geoengineering. In: J. Geophys. Res. Atmos. 41 (3), S. 1738. DOI: 10.1029/2018JD028906.

"Stratospheric aerosol geoengineering could be used to maintain global mean temperature despite increased atmospheric greenhouse gas (GHG) concentrations, for example, to meet a 1.5 or 2 °C target. While this might reduce many climate change impacts, the resulting climate would not be the same as one with the same global mean temperature due to lower GHG concentrations. The primary question we consider is how long it would take to detect these differences in a hypothetical deployment. We use a 20‐member ensemble of stratospheric sulfate aerosol geoengineering simulations in which SO₂ is injected at four different latitudes to maintain not just the global mean temperature, but also the interhemispheric and equator‐to‐pole gradients."

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