C4 - Extracting Metals
Biological methods of extraction
Life Cycle Assessment
Displacement
Reactivity Series
Phytoextraction
Bioloeaching
Disadvantage - It is a slow process.
Advantage - Does not need high temperatures
Advantage - Absorbs mineral ions through their roots.
Disadvantage - Produces toxic substances
Potassium, Sodium, Calcium, Magnesium, Aluminium, Carbon,
Zinc, Iron, Tin,
Lead, Copper, Silver, Gold
4 Factors
Manufacture
Product use
Choice of Material
Disposal
Recycling
Advantage - Less plastic goes into the water and pollutes it
Advantage - Re-use materials and components that no one wants
Disadvantage - Not many people do it
Disadvantage - Increased environmental problems
The reason iron is extracted by carbon is because it is more reactive so it reduces its electrons.
The reason calcium cannot be extracted by carbon is because it is more reactive than carbon so it needs to be extracted by electrolysis.
Haber Process
Equation = nitrogen + hydrogen Equilibrium symbol ammonia
N2(g) + 3H2(g) Equilibrium symbol 2NH3(g)
Conditions
450 degrees C
200 pressure
Iron Catalyst