Comments by "DynamicWorlds" (@dynamicworlds1) on "Climate Town" channel.

  1.  @davigurgel2040  "liquifying" could be via a cheap solvent or just by mixing it with some other oily waste and sending it through a grinder that only would need to be coursely ground/shreaded. The advantage is that rather than digging a wide, deep hole that you'll need to cover again in a way that won't let it come back up, you can just pump it right down existing oil and gas wells. Industrial shreaders are cheaper than mining equipment, so it is cheaper because you're able to take advantage of existing deep holes and geologic reservoirs capable of containing it. That's not to say dumping solid plastics into, for example, mines is a bad move, but we're talking about trying to dispose of a lot of material and pumps and pipes are a really efficient way to move large quantities of matter. Yes, burning plants also releases CO2, but the main challenge with carbon sequestration is getting the carbon into a form dense enough to be viable for sequestration (and ideally in a ways that doesn't release methane as decomposing biomass does while also being hard to seperate out all the water from the hydrocarbons). Plastics are simultaneously a waste product and one of the densest and purest forms of hydrocarbons we have, so disolved by waste solvent and/or ground into a slurry with waste oils is already the ideal carbon sequestration form, so needs minimal effort for processing/containment. When the goal is "shove as much carbon back under the Earth's surface" starting with the stuff that is both extremely carbon-dence and already waste is the most logical choice.
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