3.2.1. Adsorption isotherm of lac dye on cotton at pH 3.0
The isothermal equilibrium data of lac dye on cotton under
dyeing conditions of pH 3.0, MLR 1:100 in the dye concentration
range 52e1421 mg/L at 10, 30 and 60 C were described
employing the Langmuir isotherm equation as shown in Fig. 3.