Paper Title
CONGO RED ADSORPTION MECHANISM ON SNZNFEO NANOCOMPOSITES: STATISTICAL MODELLING AND INTERPRETATION

Abstract
It is explained in this study how synthetic SnO2/ZnO/Fe2O3 nanoparticles (SnZnFeONPs) can remove the color Congo Red (CR) from aqueous solutions. A variety of structural methods were used to analyze the SnZnFeONPs, including SEM, EDX, FTIR, and XRD. The impact of variables such as the starting concentration of CR dye, pH, ultrasound duration, and quantity of adsorbent on the effectiveness of the dye's removal. More than 97 % adsorption efficiency was achieved using the process's optimum parameters. In equilibrium, the Langmuir monolayer adsorption capacity for CR dye was 344.82 mg g-1, and the Langmuir model was better suited to the equilibrium results than the Freundlich model. The adsorption technique was studied using a kinetic model to confirm pseudo-second-order. Mathematical physics simulations were used to compute the adsorption direction of CR molecules, and a parallel orientation was discovered. According to the CR dye adsorption process, the exothermic phase involves physical forces. By varying temperatures (298, 308, and 318 K) different n values were obtained 0.599, 0.593, and 0.563 (values obtained were less than 1) respectively. As a result, CR and SnZnFeONP active sites interact via horizontal molecule orientation and several locking mechanisms. At 298, 308, and 318 K, Qsat had values of 438.465, 66.084, and 34.633 mg/g, respectively. By showing that Qsat values decrease with temperature, CR molecules and SnZnFeONPs contact with each other seldom. This adsorbent showed good adsorption in industrial effluent using an adsorption technique, and it has great potential. Keywords - SnZnFeO Nano Composites, is Otherm Modeling, N Values, Statistical Physics Model.