Alternative metal extraction methods

The first stage in phytomining involves .

• Plants being harvested and burnt

• Using plants to absorb metal compounds

• Plants absorbing metal compounds from high grade ore

• Producing leachate

Bioleaching produces

• An acidic solution of ions

• An alkaline solution of ions

• Ash containing metal compounds

• Bacteria

What toxic substance foes bioleaching produce?

Iron is used to

• Produce copper sulfate

• Is displaced by copper

• Displace copper from leachate

• Neutralise copper from leachate

What does lysis mean?

Electrolysis is

• Splitting of substances using electrolytes

• Splitting of substances using bacteria

• Splitting of substances using metal

• Splitting of substances using electricity

What charge does the anode have?

What ions does the anode attract?

Copper ions are attracted to

• The negatively charged anode

• The negatively charged cathode

• The positively charged anode

• The positively charged cathode

Alternative metal extraction methods are beneficial because

• They avoid traditional mining methods

• They are really quick and efficient

• They work on a big scale

• They are good for the environment