I ran some numbers on running an algae bioreactor for carbon capture last year. Totally easy to do, but there's two problems for home use.
First, the typical American carbon footprint is like 15 tons. Which means that a successful backyard bioreactor will have many tons per year of captured carbon to move and dispose of.
Second, the amount of air that needs to be pulled through the system to even have access to 15 tons of carbon is /enormous/. Because CO2 concentrations in air are still very tiny. So a working system pulling a significant portion of one person's carbon footprint will require a really large fan and air management system.
First, the typical American carbon footprint is like 15 tons. Which means that a successful backyard bioreactor will have many tons per year of captured carbon to move and dispose of.
Second, the amount of air that needs to be pulled through the system to even have access to 15 tons of carbon is /enormous/. Because CO2 concentrations in air are still very tiny. So a working system pulling a significant portion of one person's carbon footprint will require a really large fan and air management system.