Recycling Metals
- Everyday materials such as metals are produced from natural but finite sources
- Some products made from these materials can be reused which saves energy and decreases the environmental impact
- Metals can be melted and recast into new shapes
- Sometimes the materials being recycled need to be kept separate, depending on what the use of the recycled material will be
- Iron for example can be recycled together with waste steel as both materials can be added to a blast furnace, reducing the use of iron ore
- Recycling has advantages and disadvantages
Economic Implications
- It is economically beneficial to recycle metals, especially those that are costly to extract such as aluminium
- Recycling is fast becoming a major industry and provides employment which feeds back into the economy
Environment
- Mining and extracting metal from ores has detrimental effects on the environment and ecosystems
- It is much more energy efficient to recycle metals than it is to extract them as melting and re-moulding requires less energy
- Recycling decreases the amount of waste produced, hence saving space at landfill sites and energy in transport
Iron & steel are metals widely used in construction
Raw Materials
- There is a limited supply of every material on Earth
- As global populations increase there is greater need for effective recycling methods to attain sustainable development
- Mining and extraction use up valuable fossil fuels, which contributes to climate change
Iron ore supplies can be conserved and will last longer if iron is recycled
Disadvantages
- Collection and transport of material to be recycled requires energy and fuel
- Workers, vehicles and worksites need to be organised and maintained
- Materials need to be sorted before they can be recycled which also requires energy and labour
- Products made from recycled materials may not always be of the same quality as the original
Examiner Tip
You should be able to evaluate the advantages of recycling metals and how recycling can preserve both the environment and the supply of valuable raw materials.
