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It can't be carbon negative if you burn the resulting oil. The carbon in the atmosphere goes up. Ths technology is pointless. The carbon can be sequestered as

• Cthulhu_ 4y ago
  But they don't like doing that because it does break down over time and starts leeching into the soil underneath. Which can be caught and prevented, of course, but nobody wants to build a landfill like that. I too think it should be sequestered, ideally in fairly stable conditions; worst case, it stays there for the next thousand years and the plastic breaks down into whatever it does (entropy etc). But in a good case, they discover a means to effectively reuse, recycle or break down plastics, so that the sequestered plastic can be processed. But it's not economically viable, not when it's cheaper to export it AND get paid by counties and the government (in the form of subsidies) for the box-ticking exercise of separating it out and calling it recycled.
  • lazide 4y ago
    Huh? Everyone already builds landfills like that. They have to be clay lined anyway and leachate collected for a number of reasons.