Study the adsorption of Basic blue and neutral red dye from aqueous solution by Zeolite clay surface

Abstract

In this study, the removal of cationic dye basic blue and neutral red dye used in the aqueous
solutions with zeolite was investigated as a function of ionic strength, pH and temperature.
Adsorption process was attained to the equilibrium within 1 h.
The adsorbed amount of two dyes basic blue and neutral red dye increased with increasing
ionic strength, but decreased with increasing temperature and pH. Adsorption of cationic
dye basic blue and neutral red dye was investigated by using uv-visible technique.
The Freundlich and Dubinin- Rasdushkevich (D-R) isotherm equations were applied to the
data and values of parameters of these isotherm equations were calculated.
The mean energy of adsorption E, was also calculated from the adsorption energy constant
Keng. It’s Value determined from the D-R isotherm equation. Finally thermodynamic
functions ΔG, ΔS and ΔH, were calculated by using Freundlich isotherm.