Exploring the potential of green hydrogen to rejuvenate oceanic dead zones

Exploring the potential of green hydrogen to rejuvenate oceanic dead zones

In an innovative approach to tackling oceanic dead zones, Douglas Wallace contemplates using the oxygen by-product from green hydrogen production to revive these lifeless marine areas.

Brian Owens reports for Hakai Magazine.


In short:

  • Douglas Wallace's research explores using surplus oxygen from hydrogen production to address the low-oxygen zones threatening marine diversity.
  • The proposed World Energy GH2 project in Stephenville could produce sufficient oxygen to mitigate the Gulf of St. Lawrence's dead zone.
  • The feasibility of this oxygenation plan hinges on overcoming significant engineering and environmental challenges, alongside the uncertain future of hydrogen fuel markets.

Key quote:

“About 15 percent of the deeper parts of the Gulf of St. Lawrence are getting close to the threshold where a lot of marine animals will struggle to live.”

— Douglas Wallace, oceanographer at Dalhousie University

Why this matters:

During the electrolysis process used to create green hydrogen, oxygen is produced as a by-product. Instead of letting this precious oxygen go to waste, researchers and environmentalists are exploring innovative ways to harness it to breathe new life into depleted marine ecosystems.

Oxygen-depleted "dead zones," caused by stagnating circulation and algal blooms, have ballooned in the Gulf of Mexico and the Pacific Northwest.

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