where X – the mass of adsorbate (mg), M – the mass of adsorbent
(mg), Ce – the concentration of solute remaining at equilibrium in
mg/L, a, b – the constants. a is the coefficient, and b is the amount of
adsorbate needed to form a complete monolayer on the adsorbent
surface and so increases with molecular size. A plot of (1/(X/M))
against (1/Ce) gave a straight line