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Advantages of Recycling

Advantages of Recycling. Prevents the emission of many greenhouse gases and water pollutants, Saves energy, Supplies valuable raw materials to industry, Creates jobs, Stimulates the development of greener technologies, Conserves resources for our children’s future, and

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Advantages of Recycling

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  1. Advantages of Recycling www.assignmentpoint.com

  2. Prevents the emission of many greenhouse gases and water pollutants, • Saves energy, • Supplies valuable raw materials to industry, • Creates jobs, • Stimulates the development of greener technologies, • Conserves resources for our children’s future, and • Reduces the need for new landfills and combustors. www.assignmentpoint.com

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  4. Recycling Challenges • Location of wastes (9000 curbside programs) • Uncertainty of supply • Administrative and institutional constraints • Legal restrictions • Uncertain markets • Technical challenges to recycling • Changes in materials (i.e. light weighting) • Too many items in waste • Actually encourages waste production (because recycling will take care of it) www.assignmentpoint.com

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  6. Paper Recycling • Problems • Chlorination produces dioxins/furans • Inks are petrochemical based • Acid used to break fibers shortens life • Coating of high gloss paper • Demand for high quality paper • Glues, laminates, plastics, inks not water soluble • Paper can only be reused 4-12 times, always need a virgin source www.assignmentpoint.com

  7. Paper Recycling • ~ 50% of consumed material and growing • Goal 55% by 2012 • Strong markets for old corrugated cardboard (OCC) and newsprint (ONP) • Expanding domestic and international demand • Office paper lower demand www.assignmentpoint.com

  8. Steel Recycling • Expanding economy – increased steel demands; China and India biggest markets • 36.4% of steel is recycled • Use of plastic for automobiles is a problem • One ton steel recycled saves 2500 lb of iron ore, 1000 lb of coal, 40 lb of limestone, and significant energy savings www.assignmentpoint.com

  9. Aluminum Recycling • About 51 percent of aluminum cans is being recycled • Twenty years ago it took 19 aluminum cans to make one pound, but today, aluminum beverage cans are lighter and it takes 29 cans to make a pound. • Americans throw away enough aluminum every three months to rebuild our entire commercial air fleet. • Making new aluminum cans from used cans takes 95 percent less energy and 20 recycled cans can be made with the energy needed to produce one can using virgin ore. • Domestic recycling has declined recently, collection is expensive www.assignmentpoint.com

  10. Glass Recycling • Glass always lags other recyclables • Alternative markets needed – grind for construction fill, “glassphalt,” fiberglass • Transportation of heavy glass is expensive • Raw materials are inexpensive • Contamination is an issue • Reuse used to be common practice; however as manufacturing plants became larger and decreased in number, bottles had to be carried further for refilling. • More colored glass is imported than used domestically www.assignmentpoint.com

  11. Plastic Recycling • Problems • Light weight, bulky, low density • Wide variety of polymers • Concerns over contamination for reuse • Difficult to differentiate among types www.assignmentpoint.com

  12. Plastic Recycling • PET and HDPE have high prices due to domestic and international demand • Curbside recycling is down, driving prices up • More expensive oil prices makes virgin plastic more expensive www.assignmentpoint.com

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