Reactivity Series and Extraction of Metals - Alternative Methods of Extracting Metals Flashcards
1
Q
The earth’s resources of metal ores are ______
A
limited
2
Q
Coper ore is becoming scare, what are two new ways of extracting copper from low grade ores?
A
phytomining and bioleaching
3
Q
What do the new extraction methods avoid
A
digging, moving and disposing large amounts or rock
4
Q
How does phytomining work?
A
Phytomining uses plants to absorb metal compounds. The plants are harvested then burned to produce ash that contains metal compounds
5
Q
How does bioleaching work?
A
by bacteria breaking down ores to form acidic solutions containing metal ions called a leachate
