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Recycling Plastic
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Plastic Facts!
2.7 Billion plastic bottles were recycled in 2006
However 13 billion bottles were disposed of in total, meaning
only about
20% is recycled
20,000 plastic bottles weigh 1 tonne! For each tonne of plastic
recycled, 1.5 tonnes of CO2 is saved.
For every bottle recycled, the energy saved can power a 60W
light bulb for
6 hours
2.7 Billion bottles recycled saved enough energy to run a 60W
bulb for
16.2 Billion hours. Which is 675,000,000 days. Or 1,849,315.07
years!
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Plastics are a type of polymer
A polymer is a long chain of
molecules made of repeated unitscalled monomers
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Monomerfor example: ethene
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Monomerfor example: ethene
Polymerfor example: polyethene
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Make a monomer
You will need:
4 tooth picks
One ball of one colourFour balls of another colour
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As a table:
Join together your monomers
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What is Recycling?The concept of recycling is putting materials
to effective re-use
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Recycling is a lengthy circular process.
A company picks up thematerial
Plastics is
transported
to a factory
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Benefits of Recycling
Less waste goes to landfill
Less waste is burnt which translates to fewer toxic fumes
e.g
carbon monoxide
Carbon monoxide is a green house gas which causes Global
warming
Less raw materials are use e.g To create plastic a vast amount
of
crude oil is used which is a non-renewable source
A decrease of deforestation which in turn effects oxygen
levels,
food chains and natural habitats.
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What happens if we dont recycle!
Due to the fact that it has such a huge impact on theenvironment
if fewer people recycle then the global
temperature will increase and polar ice caps will melt which
in
turn causes sea levels to rise
Food chains will be effected meaning some species will be
endangered or made extinct and habitats will also be ruined
The local authority is charged on how much waste is put into
landfill sites more waste equates to issues such as
highercouncil tax charges
We will run out of natural resources
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How is plastic recycled?
Mechanical Recycling
Sorting Shredding
Washing
Melting Pelletizing
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Shredding
Once sorted the plastic is fed into a shredder to
break the plastic down into small lumps.
Why do we do this?
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Washing
The plastic is washed before it is melted.
Why do we do this?
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Melting and pelletizing
Both of these processes are usually completed using the same
machine
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Feedstock recycling
This breaks the polymers down into their
constituent molecules using heat or pressure.
These molecules can then be used to make
different plastics or chemicals.
What do you think are the advantages of this?
And the disadvantages?
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Task:
Your local council has put in a new requirement for the public
to sort plastics in the
home. The plastics need to be sorted into four groups:
1.polyethylene terephthalate,
2.high density polyethylene
3.polyvinyl chloride
4.other
Your job as a designer is to design an exciting new recycling
box to go in the home.
Think about where in the home the box will be kept. Will it be
on view? What size will
it need to be? How can you minimise the space it takes up?
