Evaluation of adsorption performance of Cadaghi (Eucalyptus torelliana) on nitrate ions: Kinetics and thermodynamic Egga S.E.*, Gungshik J.R., Nwuche J.C., Okoko P.A. Department of Chemistry, Faculty of Natural Sciences, University of Jos, P.M.B. 2084, Jos, Plateau State, Nigeria *Corresponding author email id: samegga13@gmail.com, emmanuels@unijos.edu.ng
Online Published on 14 February, 2024. Abstract Cadaghi (Eucalyptus torelliana) sawdust biochar was used in this study for the removal of nitrate ions from an aqueous solution. Surface area and porosity analysis, FT-IR Spectroscopy, X-ray diffraction (XRD) and scanning electron microscopy (SEM) were used to evaluate the sawdust biochar characteristics. Batch adsorption studies were done under adsorbent dose, pH, contact time, agitation speed (RPM) and initial nitrate ion concentration. At a condition of initial nitrate ion concentration, adsorbent dose, contact time, agitation speed, pH, and temperature, the optimal percentage of nitrate ion removal utilising sawdust biochar was average above 90%. The Freundlich and Langmuir isotherm models were used to examine experimental data and it is evident that the Langmuir isotherm model best fits the study. Kinetic studies show that the pseudo-second-order model best describes the adsorption process and thermodyna mic studies indicated that the adsorption is an endothermic process. Top Keywords Nitrate ions, Adsorption isotherms, Eucalyptus torelliana, Osumilite. Top |