Question 4 b)

In a counter current adsorption process pure gold is going to be separated from a Gold alloy. The gold alloy enters the separator while the content of the gold, calcium, silver, fluorine are 0.6, 0.3, 0.05 and 0.05 Kg/Kg respectively. The alloy concentration after the separation process is 0.2, 0.4, 0.3 and 0.1 Kg/Kg. The adsorption process follow the Freundlich isotherm of Y=1.2 X^1.6

i) Calculate the extraction percentage

ii) Calculate the concentration of Gold in the first stage.