title: Removal of lead (II) ions from aqueous solutions onto activated carbon derived from waste biomass.
abstract: The removal of lead (II) ions from aqueous solutions was carried out using an activated carbon prepared from a waste biomass. The effects of various parameters such as pH, contact time, initial concentration of lead (II) ions, and temperature on the adsorption process were investigated. Energy Dispersive X-Ray Spectroscopy (EDS) analysis after adsorption reveals the accumulation of lead (II) ions onto activated carbon. The Langmuir and Freundlich isotherm models were applied to analyze equilibrium data. The maximum monolayer adsorption capacity of activated carbon was found to be 476.2 mg g⁻¹. The kinetic data were evaluated and the pseudo-second-order equation provided the best correlation. Thermodynamic parameters suggest that the adsorption process is endothermic and spontaneous.
authors.affiliation: Department of Chemistry, Faculty of Science, Anadolu University, 26470 Eskisehir, Turkey. merdem@anadolu.edu.tr
authors.forename: Murat
authors.initials: M
authors.lastname: Erdem
authors.forename: Suat
authors.initials: S
authors.lastname: Ucar
authors.forename: Selhan
authors.initials: S
authors.lastname: Karagöz
authors.forename: Turgay
authors.initials: T
authors.lastname: Tay
mesh_terms: D000042:Absorption; D002606:Charcoal / Q000737:chemistry*; D007220:Industrial Waste / Q000517:prevention & control*; D007477:Ions / Q000737:chemistry / Q000302:isolation & purification; D007854:Lead / Q000737:chemistry / Q000302:isolation & purification*; D013025:Glycine max; D014462:Ultrafiltration / Q000379:methods; D014867:Water / Q000737:chemistry*; D014874:Water Pollutants, Chemical / Q000737:chemistry / Q000302:isolation & purification*; D018508:Water Purification / Q000379:methods*
chemical_list: D007220:Industrial Waste; D007477:Ions; D014874:Water Pollutants, Chemical; D014867:Water; D002606:Charcoal; D007854:Lead