Difference between revisions of "Recycling"
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#Reforming the [[material]], usually by [[melting]] and molding into a block of the [[material]]. | #Reforming the [[material]], usually by [[melting]] and molding into a block of the [[material]]. | ||
#Transporting the [[material]] to [[Factory|factories]] where it can be used to [[manufacture]] a new [[Product (Business)|product]]. | #Transporting the [[material]] to [[Factory|factories]] where it can be used to [[manufacture]] a new [[Product (Business)|product]]. | ||
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| + | : Each stage of '''recycling''' carries an [[energy]] cost. Different [[material]]s require different amounts of [[energy]] to '''recycle'''. | ||
| + | The decision to '''recycle''' a [[material]] is based on several considerations: | ||
| + | *Can it be collected and transported easily? | ||
| + | *Can the [[Product (Business)|product]] be easily separated into its [[material]]s? | ||
| + | *Can the [[material]] be separated without significant [[impurities]]? | ||
| + | *Will the [[property|properties]] of the '''recycled''' [[material]] be good enough for use in another [[Product (Business)|product]]? | ||
| + | *Is it cheaper to [[Extraction|extract]] the raw [[material]] than to '''recycle''' old [[material]]s? | ||
| + | *Will it take more [[energy]] to '''recycle''' than to [[Extraction|extract]] new raw [[material]]s? | ||
Revision as of 09:41, 25 January 2019
Contents
Key Stage 3
Meaning
Recycling is taking materials that have been used and making them into new products.
About Recycling
- Recycling allows us to use less materials from the Earth.
- Recycling makes sure limited materials do not run out.
- Recycling often uses less energy to make products than extracting materials from the Earth.
Key Stage 4
Meaning
To recycle is to process waste materials so they can be used again.
About Recycling
Recycling involves several stages:
- Collecting and transporting the used products with recyclable materials.
- Separating a product into its separate materials.
- Cleaning the material to remove contaminants.
- Reforming the material, usually by melting and molding into a block of the material.
- Transporting the material to factories where it can be used to manufacture a new product.
- Each stage of recycling carries an energy cost. Different materials require different amounts of energy to recycle.
The decision to recycle a material is based on several considerations:
- Can it be collected and transported easily?
- Can the product be easily separated into its materials?
- Can the material be separated without significant impurities?
- Will the properties of the recycled material be good enough for use in another product?
- Is it cheaper to extract the raw material than to recycle old materials?
- Will it take more energy to recycle than to extract new raw materials?