Here in Zurich we separate PET from other plastic and recycle the PET and incinerate everything else along with household waste to generate electricity and heating. The CO2 is captured (using some amine system) and piped to greenhouses and/or sold to bottlers. I'm not sure how they dispose of the ash.
It's probably not economically profitable but does make things better overall.
It's probably not economically profitable but does make things better overall.