This negative emissions technology uses fast pyrolysis to convert waste biomass to bio-oil, which is then pumped into the same deep underground rock formations that stored crude oil for millions of years.
Charm Industrial’s negative emissions
Our partner Charm Industrial converts waste biomass into bio-oil, which is then injected deep underground into the same underground rock formations that stored crude oil for hundreds of millions of years. We can’t put the fossil fuels we’ve burned back where we took them from, but we can get close by producing bio-oil and storing it underground.
Instead of letting waste biomass like excess sawdust and wood, sugar cane bagasse, corn stover, rice straw, or almond shells rot - which releases the stored CO₂ -, Charm makes bio-oil out of it. Bio-oil is produced by heating the biomass up to about 500°C in a few seconds witout any oxygen, this process is called fast pyrolysis.
Bio-oil is a liquid similar to crude oil except for a few characteristics making it a bad fuel but great for geological storage. It is a bad fuel because it is expensive to produce, it’s heavily oxygenated - which makes it have half of the energy content of crude oil - and it has a habit of solidifying over time in storage. The solidification over time and the high carbon content however are extremely useful for permanent storage.
Once produced, the carbon rich bio-oil is transported to an injection well, prepared for injection and pumped underground. Hence in this process CO₂ is taken from the atmosphere and formed to biomass, which is converted to bio-oil and then injected into rock formations to be stored for millions of years.