Plastics & their disposal
- Plastics are made from polymers
- Many polymers are chemically unreactive which means that they are non-biodegradable
- This means that the disposal of plastics can cause environmental issues
Incineration
- Polymers release a lot of heat energy when they burn and produces carbon dioxide which is a greenhouse gas that contributes to climate change
- Some polymers release toxic fumes when they burn
- An example of this is poly(vinylchloride) which releases toxic hydrogen chloride gas when burned
- If incinerated by incomplete combustion, carbon monoxide will be produced which is a toxic gas
Polluting oceans
- Plastic waste is accumulating in oceans and causing huge disruptions to marine life
Landfills
- Waste polymers are disposed of in landfill sites but this takes up valuable land, as polymers are non-biodegradable so micro-organisms such as decomposers cannot break them down
- This causes sites to quickly fill up
Disposal of polymers is an environmental problem