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> Effectively what we're doing is diverting tonnage from landfill

Wouldn’t digesting the house release more co2 to the atmosphere than just burying it in an anaerobic landfill?

About half the mycelial mass will be released as co2.* With oysters anyway. The rest will ideally become healthy top soil for plants that off set the co2. They also remediate toxic chemicals within the house. In the landfill, all that matter is locked away from the flow of matter and energy that make for a healthy world. We should really only be using anaerobic landfills for plastics and things that need a lack of oxygen to be broken down. Even then, large scale bioreactors might be more effective and take up less land. I bet old mines would work great for that.

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