Isotherm, kinetic, thermodynamics and reusability data on the adsorption of antidepressant onto silver nanoparticle-loaded biowaste

Raw data for the manuscript entitled "Isotherm, kinetic, thermodynamics and reusability data on the adsorption of antidepressant onto silver nanoparticle-loaded biowaste" by Kovo G. Akpomie and Jeanet Conradie. The dataset 1 is associated with the effect of adsorbent dosage. Dataset to is related to the effect of concentration and isotherm. Dataset 3 is associated with the influence of time and kinetics, while dataset 4 corresponds to the effect of temperature and thermodynamics for the adsorption of antidepressant.THIS DATASET IS ARCHIVED AT DANS/EASY, BUT NOT ACCESSIBLE HERE. TO VIEW A LIST OF FILES AND ACCESS THE FILES IN THIS DATASET CLICK ON THE DOI-LINK ABOV

Batch Sorption of Lead(II) From Aqueous Stream by "Ekulu" Clay-Equilibrium, Kinetic and Thermodynamic Studies

Abstract-Ekulu clay obtained from Ekulu in Enugu state Nigeria was utilized as a low-cost adsorbent for Lead(II) ions from solution. Batch adsorption technique was used to investigate the effect of pH, initial metal ion concentration, contact time and temperature on the adsorption process. Optimum pH of adsorption was obtained at a pH of 5.0 and equilibrium adsorption was achieved within 60 minutes. The Freundlich isotherm model gave a better fit to the adsorption data than the Langmuir isotherm. Kinetic studies revealed both the pseudo-first order and pseudo-second order as appropriate mechanism in the explanation of the sorption process. However, the pseudo-first order model with R 2 value of 0.994 was better than that of the pseudo-second order, 0.9833 obtained. Thermodynamics studies showed negative values of ΔG 0 at all temperatures. An entropy change, ΔS 0 of 32.93J/mol/K and enthalpy change ΔH 0 of 7.108kJ/mol were recorded. The result of this study indicated that the adsorption of lead(II) ions unto Ekulu clay is spontaneous, highly disordered and endothermic in nature

Application of response surface methodology for optimization of dissolved solids adsorption by activated coal

Abstract The adsorptive removal of total dissolved solids by activated coal using response surface methodology was investigated. A four-variable central composite experimental design was applied to correlate the adsorption variables (effluent pH, adsorbent dosage, contact time, and adsorption temperature). The adsorption variables were optimized based on the removal of total dissolved solids from fibre cement industry effluent. Three-dimensional surface plots were generated to estimate the effect of the combinations of the independent variables on the adsorption efficiency. The results of the model validation gave experimental yield 96.2%, predicted yield 96.5% obtained at effluent pH 6.27, adsorbent dosage 27.60 mg L−1, contact time 48.00 min, and adsorption temperature of 31.00 °C. The good agreement found between observed and predicted values supports the suitability of the applied model to predict the adsorption treatment