Thermodynamic study of malachite green by nanomaterial LaMnO3

Pollution of aquatic environments containing color waste from the chemical industry,such as pigment, textiles, leather and cosmetics, is harmful to humans and the environment [1,2]. In this study, LaMnO3 nanoparticles were used as a suitable adsorbent for malachite green (MG) removal from aqueous solutions. Adsorption values were investigated by changing the parameters of time, pH, temperature, adsorbent amount and initial amount of dye. The thermodynamic parameters of the LaMnO3 adsorption process were calculated such as Gibbs free energy (ΔG0), enthalpy (ΔH0) and entropy changes (ΔS0).The results showed that, due to the negative Gibbs free energy and the positive integrity of the enthalpy, the process is spontaneous and endothermic.

کلیدواژه ها:

LaMnO3 nanoparticle ، Malachite green ، Thermodynamics