Ethanol Plants as CO2 Factories

I recently received a request from the Darke Cty. LWV for helpful information on the planned CO2 sequestration project at the local ethanol plant. It appears that this is a first (or early) attempt to do this. In thinking about it, it occurred to me that there are lots of uses for CO2. Some ethanol plants are capturing and selling CO2, which seems a better idea than gas suppliers (e.g. Linde) manufacturing the CO2 they sell. Capturing and selling must be cheaper and more profitable than pumping CO2 into the ground.