This study investigated the adsorption kinetics of lac dye on
cotton. The initial dye adsorption rates (hi) onto cotton before
equilibrium time increased at higher dyeing temperatures which
indicated a kinetically controlled process.The adsorption kinetics
of lac dye on cotton was found to follow the pseudo second-order
kinetic model and the rate constant indicated a faster adsorption
rate than that for lac dye on silk [12]. The activation energy for
the adsorption process on cotton was found to be 42.4 kJ/mol.