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Turning Seawater into a Carbon Removal Solution with Captura

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Manage episode 509242245 series 2560422
Content provided by MCJ and An MCJ podcast. All podcast content including episodes, graphics, and podcast descriptions are uploaded and provided directly by MCJ and An MCJ podcast or their podcast platform partner. If you believe someone is using your copyrighted work without your permission, you can follow the process outlined here https://podcastplayer.com/legal.

Steve Oldham is CEO of Captura. Captura develops Direct Ocean Capture (DOC) technology that removes CO₂ from seawater, triggering the ocean to draw more CO₂ from the air to rebalance. With CO₂ concentrations ~150× higher in seawater than air, Captura’s closed-loop process uses electrodialysis to create acid and base on site—no added chemicals, no waste—and can run largely on off-peak renewable energy.

Oldham, former CEO of Carbon Engineering, contrasts DOC with DAC, discusses MRV and crediting, deployment pathways (onshore, barges, vessels), his company’s pilot progress in Hawaii, and why pragmatic scale-up and licensing partnerships matter for gigaton carbon removal.

Episode recorded on Aug 28, 2025 (Published on Sept 30, 2025)

In this episode, we cover:

  • [02:17] Steve’s path from Carbon Engineering to Captura
  • [05:30] How Direct Ocean Capture actually works
  • [09:10] Closed-loop design with no waste products
  • [10:14] Using electrodialysis to split acid and base
  • [13:12] Deployment options: onshore plants, barges, vessels
  • [14:39] Running on off-peak and curtailed renewables
  • [16:30] Measuring and crediting carbon drawdown
  • [21:53] Balancing CO₂ use vs. permanent storage
  • [25:22] Policy gaps like 45Q for ocean removal
  • [35:15] Captura’s Kona pilot built in 70 days
  • [37:33] First commercial project expected in Europe

Enjoyed this episode? Please leave us a review! Share feedback or suggest future topics and guests at [email protected].

Connect with MCJ:

*Editing and post-production work for this episode was provided by The Podcast Consultant

  continue reading

574 episodes

Artwork
iconShare
 
Manage episode 509242245 series 2560422
Content provided by MCJ and An MCJ podcast. All podcast content including episodes, graphics, and podcast descriptions are uploaded and provided directly by MCJ and An MCJ podcast or their podcast platform partner. If you believe someone is using your copyrighted work without your permission, you can follow the process outlined here https://podcastplayer.com/legal.

Steve Oldham is CEO of Captura. Captura develops Direct Ocean Capture (DOC) technology that removes CO₂ from seawater, triggering the ocean to draw more CO₂ from the air to rebalance. With CO₂ concentrations ~150× higher in seawater than air, Captura’s closed-loop process uses electrodialysis to create acid and base on site—no added chemicals, no waste—and can run largely on off-peak renewable energy.

Oldham, former CEO of Carbon Engineering, contrasts DOC with DAC, discusses MRV and crediting, deployment pathways (onshore, barges, vessels), his company’s pilot progress in Hawaii, and why pragmatic scale-up and licensing partnerships matter for gigaton carbon removal.

Episode recorded on Aug 28, 2025 (Published on Sept 30, 2025)

In this episode, we cover:

  • [02:17] Steve’s path from Carbon Engineering to Captura
  • [05:30] How Direct Ocean Capture actually works
  • [09:10] Closed-loop design with no waste products
  • [10:14] Using electrodialysis to split acid and base
  • [13:12] Deployment options: onshore plants, barges, vessels
  • [14:39] Running on off-peak and curtailed renewables
  • [16:30] Measuring and crediting carbon drawdown
  • [21:53] Balancing CO₂ use vs. permanent storage
  • [25:22] Policy gaps like 45Q for ocean removal
  • [35:15] Captura’s Kona pilot built in 70 days
  • [37:33] First commercial project expected in Europe

Enjoyed this episode? Please leave us a review! Share feedback or suggest future topics and guests at [email protected].

Connect with MCJ:

*Editing and post-production work for this episode was provided by The Podcast Consultant

  continue reading

574 episodes

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