Equilibrium, kinetic, diffusion and thermodynamic applications for dye adsorption with pine cone

In the present study, the adsorption of methylene blue onto pine cone was investigated. Adsorbent was characterized by XRD and SEM. The adsorption data follow the Langmuir isotherm model. Maximum adsorption capacity was calculated 125 mg.g −1 . It was determined that the pseudo-second-order model wa...

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Published in:Separation science and technology 2019-12, Vol.54 (18), p.3046-3054
Main Author: Sarıcı Özdemir, Çiğdem
Format: Article
Language:English
Subjects:
Adsorption
adsorption kinetics
diffusion
Dye dispersion
Dyes
Feasibility studies
Free energy
Methylene blue
pine cone
thermodynamic
Thermodynamic equilibrium
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description In the present study, the adsorption of methylene blue onto pine cone was investigated. Adsorbent was characterized by XRD and SEM. The adsorption data follow the Langmuir isotherm model. Maximum adsorption capacity was calculated 125 mg.g −1 . It was determined that the pseudo-second-order model was the best choice among all the available kinetic models to describe the adsorption behaviour. E a was found to be 19.57 kJ mol −1. This confirms the fact that the adsorption was a physical process. The negative free energy values indicate the feasibility of the adsorption process and its spontaneous nature.
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subjects Adsorption
adsorption kinetics
diffusion
Dye dispersion
Dyes
Feasibility studies
Free energy
Methylene blue
pine cone
thermodynamic
Thermodynamic equilibrium
title Equilibrium, kinetic, diffusion and thermodynamic applications for dye adsorption with pine cone
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