Statistical optimization of process parameters for the simultaneous adsorption of Cr(VI) and phenol onto Fe-treated tea waste biomass

Abstract

In this study, simultaneous removal of Cr(VI) and phenol from binary solution was carried out using Fetreated tea waste biomass. The effect of process parameters such as adsorbent dose, pH, initial concentration of Cr(VI) (mg/L), and initial concentration of phenol (mg/L) was optimized. The analysis of variance of the quadratic model demonstrates that the experimental results are in good agreement with the predicted values. Based on experimental design at an initial concentration of 55 mg/L of Cr(VI), 27.50 mg/L of phenol, pH 2.0, 15 g/L adsorbent dose, 99.99% removal of Cr(VI), and phenol was achieved.

Modeling of adsorption of Methylene Blue dye on Ho-CaWO4 nanoparticles using Response Surface Methodology (RSM) and Artificial Neural Network (ANN) techniques

“…The insignificant terms of the above model equation can be removed for the accurate prediction of the output response [41,42]. As seen in the normal probability plots of the residuals (normal % propability versus internally studentized residuals) (Fig.…”

“…RSM is a statistical technique for the study of the combined effects of independent process variables on a response or responses [41]. To study the interaction of the different process variables and their corresponding effects on the response (MB removal efficiency),two-dimensional (2D) contour plots and three-dimensional (3D) response surface plots against any two independent process variables were made while keeping the other process variables at their central (0) level.…”

Response Surface Optimization of Corn Husk Fiber Mercerization Using NaOH

“…The generated data were analyzed using design expert version 11 software, USA and then interpreted. RSM is a statistical technique for the study of the combined effects of independent process variables on a response [22]. A plot of the predicted versus actual values in Fig.…”

Removal and Recovery of Hazardous Metal Ions from the Industrial Effluent using Waste Fish Scale Impregnated Polyurethane Foam: Voltametric Method

“…The metal ions adsorbed fish scale impregnated on polyurethane foam separated from the adsorption process was then filled in the separation column and then the metal ions were stripped back using 10 ml 1M HCl at 1 ml per minute flow rate. The concentration of stripped metals was also checked for verification of adsorption efficiency [27][28][29] .…”