Table of contents |
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Biological Methods |
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Phytomining |
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Bioleaching |
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Biological methods of metal extraction - Higher |
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Higher Tier Only
Copper in soil can be extracted by phytoextraction
Exam Tip
Phytoextraction and bioleaching are principally used for copper extraction due to the high global demand for copper, but these methods can be applied to other metals.
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Alternative Methods of Extracting Metals
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Phytoextraction is slow but it:
Example 1: Suggest reasons why phytoextraction reduces damage to the environment.
Mining for metal ores involves quarries, which are large holes in the ground. These create noise, dust and traffic. They also destroy natural habitats. Phytoextraction reduces the need for mining and reduces this damage.
Example 2: Give one disadvantage of phytoextraction.
It is a slow process.
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