Enhanced adsorption of congo red using cationic surfactant functionalized zeolite particles

By R. Nodehi, H. Shayesteh, A. R. Kelishami. 2020

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Abstract In the present work, natural and modified clinoptilolite by cationic surfactant used for congo red removal. Adsorption kinetic models showed that pseudo-second-order by R2 > 0.99 for both adsorbents were well adapted. Congo red maximum adsorption capacities can attain 16.92 and 200 mg/g for natural and cationic surfactant modified clinoptilolite of the Langmuir isotherm, respectively. The enthalpy change (ΔHo) in the adsorption process are −39.94 and −14.39 kJ/mol , showing the adsorption is an exothermic reaction. ΔS∘

Subfields: Analytical Chemistry, Electrical and Electronic Engineering, Water Science and Technology

View Paper: https://www.semanticscholar.org/paper/442b945b98cca018ada705ae111d39e7f4bc199f