ALTERNATIVE METHODS OF EXTRACTING METALS
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4 Terms
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What do new methods of mining avoid
Avoids disadvantages of traditional mining methods of **digging, moving and disposing of large amounts of rock**
2
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What is phytomining
Plants are used to absorb metal compounds from the soil
Plants are harvested and burned to produce ash
Ash contains metal compounds
Plants are harvested and burned to produce ash
Ash contains metal compounds
3
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What is bioleaching
Bacteria used to produce leachate solutions: contain metal compounds
4
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Advantages/disadvantages of these methods
**ADVANTAGE**
* require less energy than traditional methods
* work on low concentration ores
**DISADVANTAGE**
* slow to carry out
* require less energy than traditional methods
* work on low concentration ores
**DISADVANTAGE**
* slow to carry out
Note 
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