Schlagwort: ocean-based CDR

Webinar: MRV for Ocean-Based CDR: The Big Picture

October 24, 7 – 8pm CEST

This is the first of the two-part webinar series on current innovations in measurement, reporting, and verification (MRV) for ocean-based carbon dioxide removal (CDR) hosted by Ocean Visions. In this initial one-hour webinar, a broad overview will be given of why MRV is important, the big-picture advancements driving rigor and innovation, and the challenges that remain. Talks by CDR industry experts Freya Chay (CarbonPlan) and Joanna Klitzke (Frontier) will be followed by a moderated audience Q&A.


Aleta et al. (2023): Direct Ocean Capture: The Emergence of Electrochemical Processes for Oceanic Carbon Removal

Prince Aleta, Abdelrahman Refaie, Mohsen Afshari, Ahmad Hassan, Mohammad (Mim) Rahimi IN: Energy Environ. Sci.,

The authors investigated recent advancements and challenges in electrochemical direct ocean capture (eDOC) of carbon dioxide (CO2), a negative emissions technology for oceanic carbon removal. The authors analyzed different eDOC strategies, focusing on pH swing as the primary mechanism for ocean dissolved inorganic carbon removal, and examines techno-economic challenges, such as achieving industrially preferred current densities and reducing overall costs.


Our Oceans Are Threatened by Climate Disruption. They Could Also Provide Climate Solutions

Nikki Batchelor, Michael Leitch, Brad Ack,, September 12

„The good news is that a growing body of organizations and policy makers recognize the crucial importance of safe and responsible testing of ocean CDR. In the U.S., the Biden administration has made investments in carbon removal a core component of its climate change strategy. The White House has incorporated ocean-based CDR into its Ocean Climate Action Plan, with a $30 million grant program already rolling out through the National Oceanic and Atmospheric Administration. XPRIZE Carbon Removal, a $100 million, four-year global incentive prize competition, has 225 registered teams working on developing ocean-based solutions that focus on responsible testing, alongside measurement, reporting and verification of the carbon removal. And Ocean Visions is running an innovation accelerator to support ocean-based CDR startups with specific scientific, technical and policy expertise.“


Beyond Net Zero: The Role of the Ocean in Climate Repair

October 18, Institute of Physics London and Remote Participation

Join Ocean Visions and other event partners for the Beyond Net Zero: The Role of the Ocean in Climate Repair edition of the Oceans of Knowledge conference, which will focus on the ocean data, information, and knowledge needed to inform the role of the ocean in climate repair. In-person and virtual attendance options are available.


Real Solutions or Expensive Distractions: Proving or Disproving Ocean-based Carbon Dioxide Removal in the Next 5 Years

September 22, 2023 9:00 AM – 12:00 PM, New York (USA)

There is growing interest in ocean-based CDR techniques, but key questions remain about how effective they are in drawing carbon dioxide out of the atmosphere and durably storing it, as well as their environmental effects and safety. Join this session by Ocean Visions and co-host Sabin Center for Climate Change Law for an overview of what we know, and don’t yet know, about ocean-based CDR and what we need to do to get actionable information. They will discuss the need for in-ocean research, including controlled field trials, and explore social, ethical, and governance considerations.


Flipkens et al. (2023): Acute bioaccumulation and chronic toxicity of olivine in the marine amphipod Gammarus locusta

Gunter Flipkens, Katharina Horoba, Kobe Bostyn, Luna J.J. Geerts, Raewyn M. Town, Ronny Blust IN: Aquatic Toxicology, 106662,

Coastal enhanced silicate weathering (CESW) aims to increase natural ocean carbon sequestration via chemical weathering of finely ground olivine (MgxFe(1-x)SiO4) rich rock dispersed in dynamic coastal environments. However, the environmental safety of the technique remains in question due to the high Ni and Cr content of olivine. Therefore, the authors investigated the short term bioaccumulation and chronic toxicity of olivine in the marine amphipod Gammarus locusta.


Kim et al. (2023): Carbon dioxide removal from the oceans: Carbon dioxide emission and techno-economic analyses of producing renewable synthetic methane

Ayeon Kim, Heehyang Kim, Yus Donald Chaniago, Hankwon Lim IN: Sustainable Production and Consumption 41, pp.21-35,

The capture of carbon dioxide from ocean water and utilizing the captured carbon as a stock for carbon-neutral renewable methane production may reduce a considerable amount of carbon in the atmosphere. However, given the lack of comprehensive analyses to reveal the potential, this examination proceeded through techno-economic and carbon dioxide emission analyses with several possible options of carbon dioxide extraction, location, electricity sources, and transport media.