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Question 1
Equilibrium isotherm data for adsorption of glucose from an aquous solution to activated
alumina are as follows:
c(g/cm3) 0.0040 0.0087 0.019 0.027 0.094 0.195
q(g solute/g alumina) 0.026 0.053 0.075 0.082 0.123 0.129
Determine the isotherm that fits the data and give the constants of the equation using the
given units.
Solutions:
Question 2
A wastewater solution having a volume of 2.5 m3 contains 0.25 kg phenol/m3 of solution. This
solution is mixed thoroughly in a batch process with 3.0 kg of granular activated carbon until
equilibrium is reached. Use the following isotherm and calculate the final equilibrium values
and the percent phenol extrated.
Solution:
c q
kg phenol/ m3 solution kg phenol/ kg carbon
0.322 0.15
0.117 0.122
0.039 0.094
0.0061 0.059
0.0011 0.045