Table 3 R2 and constant values for the different adsorption isotherm models of Zn(II), Cd(II) and Hg(II) on TLSB.
Materials | Parameters | Langmuir | Freundlich | Temkin | D–R | ||||
|---|---|---|---|---|---|---|---|---|---|
Zn(II) | R2 | 0.9956 | 0.9586 | 0.8496 | 0.8995 | ||||
Constants | KL | 0.2130 L/mg | Kf | 47.53 L/g | bt | 51.02 J/mol | B | 0.029 × 10–8 mol2 J2 | |
qmax | 351.36 mg/g | 1/n | 0.1121 | at | 2.15 × 1010 L/g | ε | 8.58 kJ/mol | ||
qmax | 251.32 g/mg | ||||||||
Cd(II) | R2 | 0.9964 | 0.9662 | 0.9639 | 0.9096 | ||||
Constants | KL | 0.1744 L/mg | Kf | 20.09 L/g | bt | 35.66 J/mol | B | 0.102 × 10–8 mol2 J2 | |
qmax | 465.29 mg/g | 1/n | 0.2306 | at | 1.73 × 1010 L/g | ε | 10.26 kJ/mol | ||
qmax | 308.09 g/mg | ||||||||
Hg(II) | R2 | 0.9950 | 0.8479 | 0.9089 | 0.4655 | ||||
Constants | KL | 0.1996 L/mg | Kf | 25.77 L/g | bt | 39.07 J/mol | B | 0.088 × 10–8 mol2 J2 | |
qmax | 211.02 mg/g | 1/n | 0.1881 | at | 5.40 × 1010 L/g | ε | 9.67 kJ/mol | ||
qmax | 311.55 g/mg | ||||||||
