When plants grow they absorb carbon-dioxide from air by photosynthesis, but when they die and decompose, then eventually all the captured carbon dioxide in them returns back to the atmosphere. The question is: can we utilize this aerobic decomposition of plant material to capture the carbon-dioxide that gets released in the process?
It's autumn here, and fallen leaves are all over the place on the sidewalks and roads, I wonder if it makes sense collect them and put them into tanks and pass air through it to promote aerobic decomposition and use a gas separation technique to separate the carbon-dioxide produced by decomposition which we can sequester or use it for making synthetic fuels using renewable energy. The residue will be humus which needs to be redistributed to fertilize the soil.
Assume all the energy needed for this process are coming from renewable energy.