anoxic-burial
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Carba
Carba is a Minneapolis-area climate-tech company that turns low-value waste biomass - dead trees, yard waste, and other biogenic scraps - into a stable, charcoal-like material called biocarbon (biochar). Using a patent-pending autothermal pyrolysis reactor and an anoxic (oxygen-starved) burial method, Carba locks carbon away for a certified 1,000+ years, most notably inside existing landfills where the material can also filter pollutants. The company sells the resulting permanent carbon-removal credits - including a five-year, 44,000-tonne deal with Microsoft - and aims to remove a billion tons of CO2 by 2035.
Andrew Jones
Andrew Jones is the co-founder and CEO of Carba, a Minneapolis-based carbon-removal startup that turns waste biomass into a durable, charcoal-like biocarbon and buries it to lock away CO2 for more than 1,000 years. A chemical engineer with a PhD from UC Berkeley, Jones invented Carba's patented low-energy pyrolysis and storage process and describes the work as 'reversing the coal mining process.' He previously founded and exited Activated Research Company, and has steered Carba from a 2021 lab idea to a working molten-salt reactor at a Burnsville landfill, a multi-year carbon-credit deal with Microsoft, and a goal of removing a gigaton of CO2 a year.