Carbon Resourcification Cultures Spirulina with CO₂

  Algae Europe December 2022
Carbon Resourcification

Professor Kwon Jong-hee introduces the carbon resourcification technology at Gyeongsang National University in Jinju, S. Korea, on August 11. Photo: Yonhap

Carbon resourcification, a new process that uses the carbon dioxide contained in emissions gases to culture spirulina, has reached the stage of commercialization, writes Lina Jang in

Kwon Jong-hee, a professor at Gyeongsang National University, in S. Korea, said that the new technology can convert the carbon dioxide contained in emissions gases into a carbonate by aerating it in an alkaline solution, and then using the carbonate as a culture medium for spirulina.

Existing carbon dioxide removal methods using microorganisms typically have a removal efficiency of 20 percent and are therefore difficult to commercialize. The newly established carbon resourcification technology, however, can not only remove 100 percent of the carbon dioxide in emissions gases, but also contribute to producing spirulina biomass through massive culturing, he said.

The research showed that compared to a 30-year old oak tree that can absorb 10.8 kilograms of carbon per year, the photo-culture system using the carbon resourcification technology can absorb 90 kilograms of carbon in just 10 days in a 1,000 liter bioreactor.

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