Example problems on adsorption
1. The following data were gathered in a laboratory study of the adsorption of
trichlorophenol (MW= 197.5 g/mol) on a commercial powdered activated carbon for the
following conditions:
Initial concentration of solute: 470 mg/L
Volume of solvent: 500 mL
Carbon Dose (mg)
Ce (mg/L)
13.4
4.1
9.3
6.2
5.6
27.9
3.3
91.1
2.0
168.0
Fit these data to the Langmuir and Freundlich isotherms, and determine the constants of
both the models. Which model fits better?
Example 2
3.