Alternative Methods of Extracting Metals (OCR GCSE Chemistry A, Combined (Gateway Science Suite)): Flashcards
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Phytomining method
Phytomining method
Uses plants to extract copper from low-grade ores
Bioleaching method
Bioleaching method
Uses bacteria to extract copper ions from low-grade ores
What plants absorb in phytomining
What plants absorb in phytomining
Minerals, including copper compounds, from soil
What bacteria produce in bioleaching
What bacteria produce in bioleaching
Leachate - solution rich in copper ions
Phytomining advantage
Phytomining advantage
Less harmful to environment than traditional mining
Phytomining disadvantage
Phytomining disadvantage
Slow process - plants need time to grow
Bioleaching advantage
Bioleaching advantage
Produces no carbon emissions - green process
Bioleaching disadvantage
Bioleaching disadvantage
Time-intensive - bacteria need time to break down ore
Why is copper used in electronics
Why is copper used in electronics
Excellent electrical conductivity
Copper alloy examples
Copper alloy examples
Brass and bronze
What happens to copper ions in electrolysis?
What happens to copper ions in electrolysis?
Attracted to negative electrode, reduced to solid copper
Why does iron displace copper
Why does iron displace copper
Iron is more reactive than copper