Kinetics and isotherm studies of Remazol Red adsorption onto polyaniline/ cerium oxide nanocomposites | ||||
| Journal of Basic and Environmental Sciences | ||||
| Volume 3, Issue 4, October 2016, Page 123-132 PDF (1.47 MB) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/jbes.2016.369616 | ||||
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| Authors | ||||
| M. Khairy1; R. Kamal2; N. H. Amin2; M. A. Mousa1 | ||||
| 1Chemistry Department, Faculty of Science, Benha University, Benha, Egypt. | ||||
| 2Chemistry Department, Faculty of Education, Ain shams University, Roxy 11757, Cairo, Egypt. | ||||
| Abstract | ||||
| Polyaniline/cerium oxide (PANI/CeO2) composites were prepared and characterized by XRD, FT-IR, nitrogen adsorption/desorption isotherms and TEM techniques. The PANI/CeO2 composites were used for removal of Remazol Red (RB-133) from aqueous solution. The adsorption behaviour of dye was studied at different experimental conditions of solution pH and reaction temperature. The adsorption isotherm studies were carried out using Langmuir and Freundlich models, of which Freundlich model was found more suitable. Pseudo-second-order model fitted well with good agreement with the experimental values of qe (equilibrium adsorption capacity). Thermodynamic parameters for the adsorption system were calculated and suggested that the adsorption process is spontaneous, exothermic and marked with an increase in randomness at the solid–liquid interface. | ||||
| Keywords | ||||
| Polyaniline; polyaniline/ cerium oxide; Remazol red dye; Adsorption isotherm | ||||
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