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To remove CO2 from the atmosphere, this former Ā鶹AV postdoc's startup looks to biomass

Published: 22 July 2024

In 2019, while doing post-doctoral research in Ā鶹AV's Department of Natural Resource Sciences, Qinhong Cai (better known as Tammy) travelled to Nunavut to join theĀ , a federal initiative designed to improve marine safety and increase the protection and restoration of coastal and seaway ecosystems. Cai, an environmental engineer, was sent to monitor hydrocarbon contaminants and microbial genomics along the Kivalliq transportation corridor. But after Inuit elders told her about the significant changes theyā€™d observed in the region, her heart was pulled in another direction.

ā€œAll this work is important,ā€ she , ā€œand I really enjoyed doing it. But I realized that all that effort wonā€™t be enough if we canā€™t stop or mitigate global warming.ā€

In 2020, while still at Ā鶹AV, Cai devoted evenings and weekends to developing her own unique direct air capture (DAC) system. While most DAC systems use massive amounts of heat to separate carbon dioxide from the atmosphere, Cai figured out a novel way to use biomass to achieve the same results.

Cai was still validating the tech in the lab and filing for a patent when she foundedĀ Ā to commercialize her system. The Toronto Star interviewed Cai about the qualities that set Gaiaā€™s system apart, the role DAC must play in our decarbonization efforts and the love she has for the natural world.

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