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Study finds sources of ocean plastic

 Ocean Conservancy recently released a study that notes that five countries - China, Indonesia, the Philippines, Vietnam and Thailand - account for nearly three-fifths of the estimated annual input of plastic into the global ocean, due to these nations' inadequate waste disposal and collection systems.The study concludes that by implementing fundamental waste management systems in the five nations, the amount of plastic entering the global ocean could be cut by 45%. At a glanceAt least 80 percent of ocean plastic comes from land-based sources, but the actual number is probably much higher.Three-fourths of land-sourced ocean plastic comes from uncollected waste or litter, while the remainder comes from gaps in the collection system itself.Low-residual-value plastic waste is more likely to leak than high-value plastic.Collected and uncollected plastic waste enters the ocean from five physical locationsImported end-of-life plastic contributes to the waste stream in China but is not a significant contributor in the Philippines.Treat waste by using gasification or incineration with energy recoveryIn the short term (by 2020), improving collection infrastructure and plugging postcollection gaps reduce annual leakage by nearly 50 percent.In the medium term (by 2025), the development of commercially viable waste treatment can reduce annual leakage by an additional 16 percent, ...

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