Adsorption of Congo, Red Rhodamine B and Disperse Blue Dyes From Aqueous Solution onto Raw Flint Clay

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Sameer H. Kareem
Enaas ABD-Al-Hussien

Abstract

Removal of Congo red, Rhodamine B, and Dispers Blue dyes from water solution have been achieved using Flint Clay as an adsorbent. The adsorption was studied as a function of contact time, adsorbent dose, pH, and temperature under batch adsorption technique. The equilibrium data fit with Langmuir, Freundlich and Toth models of adsorption and the linear regression coefficient R2 was used to elucidate the best fitting isotherm model. Different thermodynamic parameters, namely Gibb’s free energy, enthalpy and entropy of the on-going adsorption process have also been evaluated. Batch technique has been employed for the kinetic measurements and the adsorption of the three dyes follows a second order rate kinetics. The kinetic investigations also reveal that intraparticle diffusion mechanism was operative

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Adsorption of Congo, Red Rhodamine B and Disperse Blue Dyes From Aqueous Solution onto Raw Flint Clay. Baghdad Sci.J [Internet]. 2012 Dec. 2 [cited 2024 Mar. 29];9(4):680-8. Available from: https://bsj.uobaghdad.edu.iq/index.php/BSJ/article/view/1413
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How to Cite

1.
Adsorption of Congo, Red Rhodamine B and Disperse Blue Dyes From Aqueous Solution onto Raw Flint Clay. Baghdad Sci.J [Internet]. 2012 Dec. 2 [cited 2024 Mar. 29];9(4):680-8. Available from: https://bsj.uobaghdad.edu.iq/index.php/BSJ/article/view/1413

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