Research Article

Equilibrium Isotherm Studies of Adsorption of Pigments Extracted from Kuduk-kuduk (Melastoma malabathricum L.) Pulp onto TiO2 Nanoparticles

Table 2

Parameters and correlation coefficient ( ) of equilibrium isotherm models for the adsorption of KKP extract pigments onto TiO2 nanoparticles.

IsothermEquationParameters

Langmuir = 28.489 L/mg0.915
= 0.047 mg/g

Freundlich = 0.225 (1/g)0.893
= 0.69

Redlich-Peterson = 10 mg/g 0.657
= 45.814 mg/L 
= 0.335

Sips
 L/mg0.971
= 0.0130 mg/g