Burning plastics are unpleasant at best, polluting at worst. Hate to say it, but the eviroweenies are right once in a while.
Incinerating plastic is NOT harmful to the environment.
https://phys.org/news/2013-12-plastic-cleanly-natural-gas.html
On a side note, has anyone ever wonder why the Lord switched from water to fire in judging? In the end the Lord heats the earth up so hot that all man made stuff is incinerated. Also let’s not forge that Satan and all that follow him are tossed in the Lake of fire. So, IMHO incinerating today is the right thing as it will become the process that the Lord uses.
Incinerating plastic is the best solution!