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- Title
REMOVAL OF RHODAMINE-B DYE USING CHEMICALLY MODIFIED ACTIVATED MUSCOVITE: KINETICS, ISOTHERMS, AND THERMODYNAMIC STUDIES.
- Authors
Rashed, Mohamed Nageeb; Arfeen, Abedel-Salam Abedel Gany; El-Dowy, Fatma Ahmed
- Abstract
The chemically modified Muscovite adsorbent was prepared by activation of Muscovite with HCl and H2O2, and used for the adsorption of Rhodamine-B dye removal (RB) from polluted water. Optimum conditions were applied for maximum RB dye adsorption (solution temperature, adsorbent dose, pH, stirring time, and initial dye concentration). The results show that the maximum adsorption of RB dye (21.22 mg g-1) was achieved using a Muscovite adsorbent prepared with a mixture of HCl/H2O2. The maximum adsorption of RB dye by activated Muscovite adsorbent was 88.2 % at initial RB concentration 50 ppm, 60 min contact time, 25°C, adsorbent dose 1 g 50 mL-1, and pH 4. The adsorption kinetics studies show that the RB adsorption follows the pseudo-secondorder kinetic model. Adsorption isotherm models were investigated and ended to that the adsorption of RB dye by the activated Muscovite fitted well Langmuir adsorption isotherm. The thermodynamics parameters of RB dye adsorption using activated Muscovite indicated spontaneous and endothermic processes.
- Subjects
MUSCOVITE; ADSORPTION kinetics; ADSORPTION isotherms; GENTIAN violet; LANGMUIR isotherms; ATMOSPHERIC temperature; SORBENTS; ADSORPTION capacity
- Publication
Journal of Chemical Technology & Metallurgy, 2023, Vol 58, Issue 1, p143
- ISSN
1314-7471
- Publication type
Article