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Technology of Recycling. By Susy Kindred. Source: http://www.main.org/nuna/welcome_to.html. Energy Balance. Energy required to make products from recycled materials vs. Energy required to make products from virgin material

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technology of recycling
Technology of Recycling

By Susy Kindred

Source: http://www.main.org/nuna/welcome_to.html

energy balance
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
why this doesn t work
Why this doesn’t work
  • Recyclables change hands many times
  • Recycling is done by private companies
  • Everyone does it differently
what i did instead
What I did instead
  • Estimate of energy required to collect recyclables nationwide
slide5

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

paper
Paper
  • Collected
  • De-inked

- Slush

- Detergent

  • Addition of new materials
  • Bleached
  • Dried
  • Ironed
  • Rolled

Source: http://www.carneyswaste.com/images/recycle_paper_web.jpg

plastic
Plastic
  • Collected
  • Separated
  • Grind
  • Clean
  • Remold

http://www.basscoast.vic.gov.au/files/685_recycling%20plastic.jpg

glass
Glass
  • Collected
  • Separated by color
  • Crushed
  • Cleaned
  • Used as cullet
  • Or remolded

Source: http://www.lotfi.net/recycle/Img0018.JPG

metals
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

recycle anyway
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?
improvements
Improvements
  • REDUCE
  • REUSE
  • THEN RECYCLE

Source: http://www.swansea.gov.uk/index.cfm?articleid=9442

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