Schlagwort: Carbon Dioxide Removal

La Plante et al. (2023): Electrolytic Seawater Mineralization and the Mass Balances That Demonstrate Carbon Dioxide Removal

Erika Callagon La Plante, Xin Chen, Steven Bustillos, Arnaud Bouissonnie, Thomas Traynor, David Jassby, Lorenzo Corsini, Dante A. Simonetti, Gaurav N. Sant IN: ACS EST Engg.,

The authors present the mass balances associated with carbon dioxide (CO2) removal (CDR) using seawater as both the source of reactants and as the reaction medium via electrolysis following the “Equatic” (formerly known as “SeaChange”) process. This process involves the application of an electric overpotential that splits water to form H+ and OH ions, producing acidity and alkalinity, i.e., in addition to gaseous coproducts, at the anode and cathode, respectively. Geochemical simulations quantify the extents of net CO2 removal including the dependencies on the process configuration. It is furthermore indicated that the efficiency of realkalinization of the acidic anolyte using alkaline solids depends on their acid neutralization capacity and dissolution reactivity.


Launchpad cohort 2 application

Deadline: June 8 2023

Developed in 2021, Ocean Visions’ Launchpad program supports selected companies using ocean-based approaches that are competing for the $100M XPRIZE Carbon Removal. Ocean Visions are now initiating Launchpad’s second cohort, and want to expand the search profile beyond XPRIZE participants to include all innovators working on ocean-based CDR pathways, as well as those who are enabling or improving the understanding of these pathways. The latter includes innovators working on improving monitoring or measurement (as part of MRV) of ocean-based CDR, as well as addressing knowledge gaps identified in the Ocean Visions Road Maps, such as developing in water tools for autonomous CDR operations or addressing engineering challenges to better deliver or measure ocean-based CDR.


Bauer et al. (2023): Exploring risks and benefits of overshooting a 1.5 °C carbon budget over space and time

Nico Bauer, David P Keller, Julius Garbe, Kristine Karstens, Franziska Piontek, Werner von Bloh, Wim Thiery, Maria Zeitz, Matthias Mengel, Jessica Strefler IN: Environmental Research Letters 18, 054015, DOI 10.1088/1748-9326/accd83

While potential side effects of carbon removal deployment are discussed extensively, the additional climate risks and the impacts and damages have attracted less attention. The authors link six models for an integrative analysis of the climatic, environmental and socio-economic consequences of temporarily overshooting a carbon budget consistent with the 1.5 °C temperature target along the cause-effect chain from emissions and carbon removals to climate risks and impact. Global climatic indicators such as CO2-concentration and mean temperature closely follow the carbon budget overshoot with mid-century peaks of 50 ppmv and 0.35 °C, respectively.


»Carbon Management«: Chancen und Risiken für ambitionierte Klimapolitik

Felix Schenuit, Miranda Böttcher, Oliver Geden IN: SWP-Aktuell 2023/A 30, 05.05.2023, 8 S., doi:10.18449/2023A30

Die Klimapolitik in der Europäischen Union und in Deutschland hat sich mit der Verabschiedung von Netto-Null-Zielen deutlich verändert. Eine neue Entwicklung ist die Bedeutung von Carbon Management. Der Sammelbegriff umfasst neben der Ab­scheidung und Speicherung von CO2 (Carbon Capture and Storage, CCS) auch die CO2‑Abscheidung und Nutzung (Carbon Capture and Utilization, CCU) sowie die Ent­nahme von CO2 aus der Atmosphäre (Carbon Dioxide Removal, CDR). Es ist wichtig, Klarheit in Bezug auf die Abgrenzung dieser einzelnen Ansätze zu schaffen und ihr Verhältnis zu den sogenannten Restemissionen und schwer vermeidbaren Emissionen zu identifizieren.


Prütz et al. (2023): Understanding the carbon dioxide removal range in 1.5 °C compatible and high overshoot pathways

Ruben Prütz, Jessica Strefler, Joeri Rogelj, Sabine Fuss IN: Environ. Res. Commun. 5 041005DOI 10.1088/2515-7620/accdba

The authors analyze the range in CDR volumes in AR6 WGIII pathways by exploring relationships between variables as potential driving forces, focusing on CDR in 2050 and scenario properties linked to reaching net-zero CO2. It is also shown how the relative and absolute contribution of CDR to total mitigation up until reaching net-zero CO2 substantially differs across scenarios.


Webinar Series: Model Legislation to Advance Ocean Carbon Dioxide Removal Research

May 11, 2023, 6-7 pm CEST by Ocean Visions

With support from Ocean Visions, Sabin Center for Climate Change Law at Columbia University recently published model federal legislation to advance safe and responsible ocean carbon dioxide removal research in the United States. In this webinar, Romany Webb, Associate Research Scholar at Columbia Law School and Deputy Director of the Sabin Center for Climate Change Law, will describe the existing legal framework for ocean carbon dioxide removal research in the U.S. and highlight key gaps and shortcomings in that framework. She will also discuss possible legal reforms to facilitate safe and responsible ocean carbon dioxide removal research.


Prado & Dowell (2023): The cost of permanent carbon dioxide removal

Augustin Prado and Niall Mac Dowell IN: Joule 7, 700–712;

In this contribution, the authors present a general analytical framework that quantifies the non-zero climate repair value (CRV) of a CDR pathway of arbitrary permanence. A non-linear relationship between store durability and CRV is observed. The authors then incorporate the CRV concept in a conventional levelized cost of removal analysis, extended to account for monitoring, reporting, and verification (MRV) of a given store.


Symposium For Carbon Removal Deployment

June 21 – 22, 2023 in Washington DC (USA)

The Institute for Carbon Removal Law and Policy at American University, XRPIZE Carbon Removal, Consortium for Science Policy & Outcomes at Arizona State University, and the Carbon Business Council and its sister organization the Carbon Development Council, invite to participate in the two-day ‘summer school.’ Geared for carbon removal project developers, symposium participants will hear from leaders in the carbon removal field and receive actionable information for how projects can be deployed responsibly.


Using slaked lime to fight climate change

GEOMAR Helmholtz Centre for Ocean Research Kiel, April 04, 2023

„A large-scale experiment on the island of Helgoland examines a potential solution for the long-term removal of carbon dioxide from the atmosphere with the help of the ocean. A team of 30 researchers investigates whether the ocean can absorb more carbon dioxide (CO2) from the atmosphere through the addition of slaked lime and what influence this has on plankton communities in the sea.“