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Why is extracting metal from a low-grade ore uneconomic using conventional methods?
A
Burning leaves a small amount of metal-rich ash that is more concentrated than the original soil.
B
Iron is more reactive than copper, so it displaces copper from copper sulfate solution.
C
- Large energy use produces very little metal.
- Mining creates extensive waste rock and landscape damage.
D
Both biological methods are much slower than conventional extraction.
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5.1.4 Biological methods of metal extraction Flashcards
20 flashcards on Edexcel GCSE Chemistry 5.1.4 Biological methods of metal extraction: the key terms, definitions and equations you need to recall for Paper 1 and Paper 2.