5.10.1.4 Alternative methods of extracting metals Flashcards
1
Q
The Earth’s resources of metal ores are?
A
limited
2
Q
Copper ores are becoming
A
scarce
3
Q
new ways of extracting
copper from low-grade ores include
A
bioleaching and phytomining
4
Q
phytomining and bioleaching methods avoid traditional mining methods of
A
digging, moving
and disposing of large amounts of rock.
5
Q
Phytomining uses?
A
plants to absorb metal compounds
-The plants are harvested and then burned to produce ash that contains metal compounds.
6
Q
Bioleaching uses?
A
uses bacteria to produce leachate solutions that contain metal compounds
7
Q
The metal compounds can be processed to?
A
obtain the metal
8
Q
copper can be obtained from solutions of compounds by?
A
displacement using scrap iron or by electrolysis.
