Biosorption of Fe (II) and Pb (II) on unmodified Senna tora: Isotherm and kinetic modeling

Contamination of environment by heavy metals has become a major concern worldwide. The role conventional methods in remediating ineffective and costly. Therefore, it becomes imperative to explore bioremediation using cost effective, efficient environmentally friendly alternative method removing metals. In this study, the adsorption behaviour Senna tora, low-cost adsorbents, with respect Fe(II) Pb(II) ions, been studied order consider its application treatment wastewater. physicochemical properties unmodified tora were predetermined. batch experimental was employed: parameters such as pH, contact time, dosage initial metal concentration studied. influence pH ion solutions on uptake levels ions adsorbent used carried out between 4 10. optimum for both Fe (II) removals 7. An equilibrium time 60 min required onto tora. Percentage sorption increased from 94 99% that Pb 94.4 96% dose 2 10 g. isotherms data provide information capacity or amount remove unit mass pollutant under operating conditions. adsorbed pods fitted Langmuir, Freundlich, Temkin isotherms. On basis correlation coefficients R2, is concluded biosorption better Freundlich model. This suggests surface occurs heterogeneous binding sites equivalent energies multilayer coverage. results demonstrated pod holds potential cationic species industrial