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Vol. 28 No. 10 (2016): Vol 28 Issue 10

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Paper Industry Waste Sludge: A Low-Cost Adsorbent for Removal of Malachite green Dye

https://doi.org/10.14233/ajchem.2016.19886
Anita Thakur
Department of Chemistry, Punjabi University, Patiala-147 002, India *Corresponding author: E-mail: preetjudge@yahoo.co.in
Harpreet Kaur*
Department of Chemistry, Punjabi University, Patiala-147 002, India *Corresponding author: E-mail: preetjudge@yahoo.co.in

Asian Journal of Chemistry, Vol. 28 No. 10 (2016): Vol 28 Issue 10

Abstract

In the present work, paper industry waste sludge has been used as a low-cost adsorbent for the investigation of adsorption isotherms, kinetics and thermodynamic parameters of Malachite green dye adsorption from aqueous solution. Three kinetic models, pseudo-first-order, pseudo-second-order and intra-particle-diffusion model have been used to predict the adsorption rate constants. The kinetics of adsorption has been best described by pseudo-second-order model and is supported by intra-particle-diffusion model. The equilibrium adsorption capacity has been determined by subjecting the experimental data to Langmuir, Freundlich and Temkin isotherms. The thermodynamic parameters such as; change in free energy, enthalpy and entropy have been calculated.

Keywords

Malachite green Adsorption Kinetics Thermodynamics.
Thakur, A., & Kaur*, H. (2016). Paper Industry Waste Sludge: A Low-Cost Adsorbent for Removal of Malachite green Dye. Asian Journal of Chemistry, 28(10), 2139–2145. https://doi.org/10.14233/ajchem.2016.19886
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