Sure. Put it in a greenhouse and make food! Like I said to another thread, just use CaO->CaCO3 then go backwards CaCO3->CaO at the point that you're using it

Sure. Put it in a greenhouse and make food! Like I said to another thread, just use CaO->CaCO3 then go backwards CaCO3->CaO at the point that you're using it as long as the heating doesn't adversely effect the greenhouse environment.