Turning air into sustainable fish feed

20. September 2022

Biotechnology converts air, water and electricity into protein, reducing aquaculture's carbon footprint.

A new technology has been developed to convert air, water and electricity into protein, creating a sustainable ingredient for fish feed and reducing aquaculture's carbon footprint. This method addresses aquaculture's biggest environmental challenge, as today's fish feed alternatives, especially those based on soy, have a significant environmental impact.

With the help of biotechnology and microorganisms, CO₂ is captured and converted into a sustainable ingredient for salmon feed. This process uses fermentation, electrolysis and carbon capture. Specialized microorganisms consume and convert CO₂ into single-cell proteins, while electrolysis is used to split water into hydrogen and oxygen.

The result is a high-quality protein from an affordable carbon source. This method of feed production uses significantly less water and land than traditional agriculture, and provides a new source of protein without competing with other food production. The technology is still under development, but is expected to demonstrate its sustainable and circular aquaculture system in the near future.