Chemistry 10.1.5

Question 1

What are Some Biological Methods of Extracting Metals? What is the Advantage of Using them? (2)

Answer 1

-Phytoextraction.

-Bioleaching.

The Advantage is that they Don’t Cause any Significant Environmental Damage.

Question 2

Explain the Metal Extraction Process ‘Phytomining’: (4)

Answer 2

-The Plants are Grown in Areas known to Contain Metals of Interest in the Soil.

-As the Plants Grow, the Metals are Taken Up Through the Plants Vascular System, & Become Concentrated in Specific Parts, such as their Shoots & Leaves.

-These Parts of the Plant are Harvested, Dried, & Burned.

-The Resulting Ash Contains Metal Compounds. Extracted via Displacement Reactions / Electrolysis.