C14 Flashcards
1
Q
What are finite resources?
A
Resources that will eventually run out if we continue to exploit them (e.g. metal ores, crude oil, limestone)
2
Q
How is water made safe to drink?
A
Refer to notes
3
Q
How is waste water treated?
A
Refer to notes
4
Q
How does phytomining work?
A
- plants that can absorb copper ions are grown on low grade copper ore
- plants are burnt and copper is extracted from the ash
- copper irons are dissolved from the ash by adding sulfuric acid
- you can then get pure copper from displacement by scrap iron then electrolysis
5
Q
How does bleaching work?
A
-bacteria feed on low grade metal ores
- by a combination of chemical and biological processes, leachate can be obtained from waste copper or by displacement with scrap iron, then electrolysis
6
Q
What is leachate?
A
A solution of copper sulfate
7
Q
How is a life cycle assessment carried out?
A
- listing all the material inputs and outputs into the environment
- evaluating potential environmental impacts from inputs and outputs.
- interpreting results to help make decisions about using one material, process, product or service over another
8
Q
A
