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科技与生活常识·英语30篇(1)

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Why Compostable Packaging Often Ends Up in Landfills — Not Compost Bins

Why Compostable Packaging Often Ends Up in Landfills — Not Compost Bins

为何可堆肥包装常被送入垃圾填埋场而非堆肥箱

  1. Compostable packaging breaks down fully only under industrial composting conditions—high heat, moisture, and microbes.
  2. Home compost piles rarely exceed 40°C, while industrial facilities maintain 55–65°C for weeks.
  3. Without those conditions, ‘compostable’ plastics like PLA may sit unchanged for years in soil or landfills.
  4. Most cities lack separate collection for compostables, so they mix with regular trash or recycling.
  5. Contamination is another issue: food residue on compostables confuses sorting machines at recycling centers.
  6. Labels like ‘biodegradable’ or ‘eco-friendly’ don’t guarantee compostability—only certified logos do.
  7. Standards such as ASTM D6400 or EN 13432 verify breakdown within 180 days in industrial settings.
  8. When sent to landfills, compostable items decompose anaerobically, releasing methane—a potent greenhouse gas.
  9. Clear consumer education and better municipal infrastructure are needed to close the loop.
  10. Until then, reusable containers remain the most climate-smart choice for everyday use.
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