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Technology of Recycling

Dive into the energy balance comparison between recycling and virgin material production, explore the processes of paper, plastic, glass, and metal recycling, and discover the environmental benefits of the Reduce, Reuse, Recycle hierarchy.

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Technology of Recycling

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  1. Technology of Recycling By Susy Kindred Source: http://www.main.org/nuna/welcome_to.html

  2. Energy Balance • Energy required to make products from recycled materials vs. • Energy required to make products from virgin material • Factors – sources, collection of recyclables, virgin materials, process equipment

  3. Why this doesn’t work • Recyclables change hands many times • Recycling is done by private companies • Everyone does it differently

  4. What I did instead • Estimate of energy required to collect recyclables nationwide

  5. Source: ttp://www.concordnet.org/cpw/recycle/html/drivers.html

  6. Paper • Collected • De-inked - Slush - Detergent • Addition of new materials • Bleached • Dried • Ironed • Rolled Source: http://www.carneyswaste.com/images/recycle_paper_web.jpg

  7. Plastic • Collected • Separated • Grind • Clean • Remold http://www.basscoast.vic.gov.au/files/685_recycling%20plastic.jpg

  8. Glass • Collected • Separated by color • Crushed • Cleaned • Used as cullet • Or remolded Source: http://www.lotfi.net/recycle/Img0018.JPG

  9. Metals • Collected • Separated into aluminum and steel Aluminum Steel Steel sells Shredded Flattened at $0.10/lb Cleaned De-tinned Tin sells Melted Drained at $4.413/lb Ingots or sheets Rinsed Baled

  10. Recycle Anyway? • Paper is the number one trash in landfills • Plastic is made from petroleum • Glass is easy to recycle but even easier to reuse • Metals are valuable ores • Environment?

  11. Improvements • REDUCE • REUSE • THEN RECYCLE Source: http://www.swansea.gov.uk/index.cfm?articleid=9442

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