Removal of Cadmium ions By Several Solid Stationary Phases Prepared from Papyrus Plant

The removal of Cd2+ ions from aqueous solution, has been done by using stationary phases prepared from papyrus plant. The dried (DP) treated with 0.025 M ethylene diamine tetra-acetic acid (EDTA) at pH=10, The activated carbon samples (SAC and PAC) were treated by chemical activation with sulfuric acid and phosphoric acid. Then activated carbon has been modified by nitric acid and gives the oxidized sulfuric activated carbon (OSAC) and oxidized phosphoric activated carbon (OPAC). Batch adsorption experiments were held at different pH values (2 - 6), contact time (5 - 300) min, initial metal concentration (25 - 300) mg/L, where the adsorbed dosage (25 - 200) mg, and solution temperature (298 - 318) K. The oxidized activated carbon, activated carbon and the dried from were seen as Fourier Transform Infrared (FTIR), as well as Scanning Electron Microscopy (SEM). The particular adsorption stability was described using Langmuir as well as Freundlich isotherm designs. The adsorption kinetics followed a pseudo-second get kinetic design and intra particle diffusion was involved in the adsorption procedure. Thermodynamic outcomes indicated how the adsorption procedure was quickly arranged and endothermic within nature.