Plastics are almost exclusively made from petroleum, and they retain a lot of potential energy after they have been used. So, it may seem to make sense to simply burn them for power. However, the challenge to this approach is that combustion of plastics creates several undesirable pollutants, such as dioxins and furans. Waste plastics may also contain undesirable components. PVC, for example, is polyvinyl chloride, and the chlorine atoms can form corrosive hydrochloric acid when combusted. Pyrolysis is another different approach that involves the thermal degradation of plastic waste in the absence of oxygen to produce a liquid oil. But it creates many undesirable byproducts, and the resulting oil requires significant additional processing. Which solution do you think is novel to plastic pollution ?

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