New uses for old tires

Article Abstract:

The US discards about 242 million used tires annually, and less than 7% is recycled. The rest are either stockpiled, dumped illegally or landfilled. Fortunately, technology is providing possibilities for lesser tire disposal. Modifying the surface of tires and combining them with commercial polymers produces composite materials. Combining recycled rubber granules with resins produces flooring material. Varied recycling approaches produce artificial tire reefs, tire derived fuel chips, chips for gardening applications, doormats and rubber modified asphalt.

Waste management, Recycling (Waste, etc.), Recycling, Tires

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Composting commercial organics at a county landfill

Article Abstract:

The Oneida County Solid Waste Department in Wisconsin is expanding its composting programs with a view to reduce wastes by making a profitable use of them. On the basis of land application and composting trials at the University of Wisconsin Agricultural Research Station, the Oneida County landfill has collaborated with company paper mills, supermarkets, and other commercial generators. It has started land applying the fiber cake produced by the mills and set up a composting area. The landfill has started taking source separated organics also.

Management, Organic wastes, Industrial wastes

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Moving towards consensus on degradable plastics

Article Abstract:

The introduction of allegedly degradable polymers in the 1980s has been disappointing because their performance did not meet the expectations of the public. Fortunately, the search for truly degradable polymers has led to the introduction of materials that will mineralize with the compost materials they contain. The production of these degradable polymers is considerably more expensive than that for conventional plastics but research is underway to make the production of these materials competitive.

Polymers, Plastics, Biodegradable plastics

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