Comparative study for Pb2+ adsorption from simulated wastewater of battery manufacture on activated carbon prepared from rice husk with different activation agents

This study contains a lab-scale investigation into the feasibility of applying an adsorption technique to treat wastewater polluted with lead metal simulated that exhaust from battery manufactory. Rice husks have been prepared for use in three forms; natural rice without any activation, activated carbon pretreated Sulfuric acid H2SO4, and other Potassium hydroxide KOH. Activated using KOH provided best condition removal than H2SO4 husks. The BET surface area morphology by FESEM analysis were characterized. values (20, 561, 722) m2/g husk, sulfuric acid, potassium respectively. process was studied Pb2+ at temperatures (25-40)o C concentration range (20-100) mg/l. maximum ratios or activation after 1h 51.21%, 92.3%, 97.25%, capacity onto husks, KOH, carbons (37, 86.2 94.6) mg/g respectively, 100 ppm 25oC. equilibrium curves obtained data fairly well fitted Freundlich-isotherm confidence level 0.99. kinetic two models, pseudo first order second order. results showed rapid increase rate initial until achieved. Pseudo model represented very