Adsorption of anionic dye on eco-friendly synthesised reduced graphene oxide anchored with lanthanum aluminate: Isotherms, kinetics and statistical error analysis. Issue 7 (1st April 2021)

• Record Type: Journal Article
• Authors: Alrobei, H.; Prashanth, M.K.; Manjunatha, C.R.; Kumar, C.B. Pradeep; Chitrabanu, C.P.; Shivaramu, Prasanna D.; Kumar, K. Yogesh; Raghu, M.S.
• Is Part Of: Ceramics international. Volume 47:Issue 7(2021)Part B
• Page Start: 10322
• Page End: 10331
• Publication Date: 2021-04-01
• Subjects: RGO-LaAlO3 nanocomposite -- Adsorption -- Methyl orange -- Error analysis -- Adsorption isotherm -- Kinetics; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2020.07.251
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: In the present study we made an effort to deploy eco-friendly synthesized reduced graphene oxide/Lanthanum Alluminate nanocomposites (RGO-LaAlO3 ) and Lanthanum Alluminate (LaAlO3 ) as adsorbents to remove dye from the synthetic media. XRD, SEM, BET surface area and EDX have been used to characterize the above-mentioned adsorbents. The impacts of different factors like adsorbent dosage, the concentration of adsorbate and PH on adsorption were studied. The best fit linear and nonlinear equations for the adsorption isotherms and kinetic models had been examined. The sum of the normalized errors and the coefficient of determination were used to determine the best fit model. The experimental data were more aptly fitted for nonlinear forms of isotherms and kinetic equations. Pseudo-second-order and Freundlich isotherm model fits the equilibrium data satisfactorily. Methyl orange (MO) has been used as model dye pollutant and maximum adsorption capacity was found to be 469.7 and 702.2 mg g −1 for LaAlO3 and RGO-LaAlO3, respectively. Graphical abstract: Image 1