Table 9 Linear and non-linear constant s for various adsorption isotherm studies
Isotherm model | Linear constants | Non- linear constants |
|---|---|---|
Langmuir | R2 = 0.99 Qmax = 108.69 mg/g KL = 45.66 L/mg RL = 0.02 Residual sum of squares = 3.65 × 10–6 | Does not converge at all |
Freundlich | R2 = 0.96 Kf = 34.59((mg/g)(L/mg))0.25 1/n = 0.44 n = 2.27 Residual sum of squares = 0.00594 | R2 = 0.96 Kf = 37.84((mg/g)(L/mg))0.25 1/n = 0.38 n = 2.63 Reduced chi-square = 27.10 |
Temkin | R2 = 0.99 bT = 98.17 kT = 3.585 Residual sum of squares = 34.6 | R2 = 0.97 bT = 37.69 kT = 1.59 Reduced chi-square = 21.41 |
Sips | R2 = 0.95 1/ns = 0.2 ns = 5 ks = 29.68 Residual sum of squares = 0.00095 | Does not converge at all |