Nova Scotia Startup Turns Ocean Water Into Carbon Storage

What if the ocean could help heal the sky? A Nova Scotia company called pHathom is testing technology that does exactly that, capturing carbon dioxide from the atmosphere and locking it away safely in seawater.

The pilot project is running right now at the Huntsman Marine Science Centre in St. Andrews, New Brunswick. Scientists are watching carefully as specially designed reactors speed up a process that nature has been doing for millions of years.

Here's how it works naturally. When rain falls through the air, it picks up carbon dioxide and becomes slightly acidic. As that rainwater flows over limestone and similar rocks, chemical reactions transform the carbon dioxide into bicarbonate, a stable compound that can stay locked in the ocean for thousands of years.

pHathom's reactors recreate this natural chemistry much faster than rain and rocks ever could. The treated water goes back into the ocean with a pH level similar to normal seawater, making it safe for marine life.

The current test captures only a small amount of carbon dioxide each day. That's by design, because researchers need to study how the treated water affects everything from tiny plankton to larger fish species before scaling up.

The Ripple Effect

This project puts Atlantic Canada at the forefront of ocean-based climate innovation. pHathom joins several other regional companies exploring whether the ocean's natural carbon-absorbing powers can be enhanced safely.

Scientists already know the ocean soaks up a huge portion of global carbon emissions. The question these innovators are asking is whether we can increase that capacity without harming the ecosystems we depend on.

Experts are clear that cutting emissions remains the most important climate action. But technologies like pHathom's could provide an extra tool in the toolkit, especially for removing carbon that's already warming our planet.

If the pilot succeeds, larger tests could launch in Nova Scotia within a few years. The path forward includes significant hurdles around science, environmental protection, regulations, and economics.

Still, researchers say the time to explore promising solutions is now, not later when we're desperate. Testing today means having proven options ready tomorrow.

Atlantic Canada's coastal location and marine expertise make it a natural home for this kind of innovation. The region is showing the world that ocean science and climate action can go hand in hand, turning local knowledge into global solutions.

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