Lantana camara shoot adsorption potential for removal of Pb (II) from aqueous solutions

Abstract: The aim of this study was to evaluate utilization of waste weed material as Lantana camara Shoots (LS) as adsorbent for removal of Pb(II) from aqueous solutions. The batch and column mode studies were performed for metal sequestration. The adsorbent material was low cost and found in abundant form in studied area. In batch system, effect of pH, dose, contact time, initial metal concentration and particle sizes were studied. The monolayer adsorption capacities for Pb(II) was 2.42 mg/g at pH 5. Langmuir model fitted well with Pb(II) metal uptake. Pseudo second order kinetic models suits better than Pseudo first order in all experimental data. SEM and FTIR studies describe adsorption mechanism and support adsorption phenomenon. Column studies with real textile effluent reports more than 87% metal removal within 120 min contact time. Hence, this LS adsorbent could be attributing as efficient adsorption in its natural state.

Keywords: Lantana camara, Metal removal, Batch, Column, Flow rate