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cyberaxlast Wednesday at 2:13 AM1 replyview on HN

A better alternative is de-polymerization, turning the plastic into monomers (or at least oligopolymers). This way, 90% of it can be recycled without degradation.

And the remaining 10% can be burned, of course.


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kletonlast Wednesday at 5:50 AM

There would be serious logistical issues with this. Drive by the nearest refinery and see the cracking tower. Essentially this is doing as you describe, making ethylene, propylene etc from olefins. But these refineries are located at pretty centralized petroleum or gas terminals. Compared to the mass flow of used plastics distributed evenly across the population density. You either need the haul the stuff very long distances or build lots of huge refineries everywhere. An incinerator is a significantly smaller capital investment than a refinery.

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