The risk is microplastic, which can escape cheap containment several ways (wind, water, etc). Yes, turning every planet-wide scrap of plastic into combustion b

The risk is microplastic, which can escape cheap containment several ways (wind, water, etc). Yes, turning every planet-wide scrap of plastic into combustion byproducts would release a lot of CO2. It's likely it would pale in comparison to fuel though, since the most it can release is the oil embodied in the plastic, plus the energy used in reprocessing.