This sort of reminds me of something I read about 15 years ago, and to this day can’t believe it never took off. But a city down in Florida was building a large factory which basically had a core that could get hotter than the surface of the sun. Landfills would be dug up and thrown into this - basically vaporizing everything. It would also produce heat which would then generate electricity for the nearby towns. There was a small amount of leftover product which was basically carbon ash that would be compacted into bricks which would be sold various purposes. Enviros sued and it never took off that I know of.
“hotter than the surface of the sun. “
I don’t think so!