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Solid Waste: The Throwaway Society Solid Waste • Any discarded material that is not liquid or gas. – 56% - Manufacturing Waste – 26% - Mining Waste – 9% - Agricultural Waste – 6% - Hazardous Waste – 2% - Municipal Solid Waste**** – 1% - Other Biodegradable Waste • A material that can be broken down by decomposers (fungus & bacteria). • Created from living things. – Newspapers – Paper Bags – Cotton – Food – Leather Non-biodegradable Waste • Materials that cannot be degraded by living things. • Made from oil, but chemically rearranged. – Nylon – Polyester – Plastic – Fleece 2005 MSW by TYPE (EPA) • • • • • • • • • Paper - 34% Yard Trimmings - 13% Food Scraps - 12% Plastics - 12% Metals - 8% Rubber, Leather & Textiles - 7% Glass - 5% Wood - 5% Other - 4% How is waste processed on Earth? • 57% Landfills • 28% Recovered, Recycled or Composted • 15% Incinerated (burned) Solid Waste Management Hierarchy Landfills • Modern waste-disposal facility where wastes are put on plastic-lined ground and covered each day with a layer of dirt & plastic.
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