title: Evaluation of the adsorption potential of eco-friendly activated carbon prepared from cherry kernels for the removal of Pb2+, Cd2+and Ni2+from aqueous wastes.
abstract: Development, characterization and evaluation of the efficiency of cost-effective medium for the removal of Pb2+, Cd2+and Ni2+from aqueous systems, as a novel, eco-friendly solution for wastewater remediation were done. The precursors for low-cost adsorbent were lignocellulosic raw materials (sweet/sour cherry kernels), as industrial byproducts and components of organic solid waste. Activated carbon synthesis was carried out by thermochemical conversion (H3PO4, 500 °C) in the complete absence of inert atmosphere. Characterization of the activated carbon was performed by elemental analysis, FTIR, SEM, EDX and BET. BET surface area corresponds to 657.1 m2g-1. The evaluation also included the influence of pH, contact time, solute concentration and adsorbent dose on the separation efficiency in the batch operational mode. The equilibrium and kinetic studies of adsorption were done. The maximum adsorption capacity of the activated carbon for Cd2+ions was calculated from the Langmuir isotherm and found to be 198.7 mg g-1. Adsorption of Pb2+and Ni2+were better suitable to Freundlich model with the maximum adsorption capacity of 180.3 mg g-1and 76.27 mg g-1, respectively. The results indicate that the pseudo-second-order model best describes adsorption kinetic data. Based on desorption study results, activated carbon was successfully regenerated with HNO3for 3 cycles. In order to provide the results for basic cost-effective analysis, competing ion-effects in a real sample have been evaluated.
authors.affiliation: Faculty of Technical Sciences, Department of Environmental Engineering and Occupational Safety and Health, University of Novi Sad, Trg Dositeja Obradovića 6, 21 000 Novi Sad, Serbia.
authors.forename: Sabolč
authors.initials: S
authors.lastname: Pap
authors.affiliation: Faculty of Technical Sciences, Department of Environmental Engineering and Occupational Safety and Health, University of Novi Sad, Trg Dositeja Obradovića 6, 21 000 Novi Sad, Serbia.
authors.forename: Jelena
authors.initials: J
authors.lastname: Radonić
authors.affiliation: Faculty of Chemistry, Chair of Applied Chemistry, University of Belgrade, Studentski trg 12-16, 11000 Belgrade, Serbia.
authors.forename: Snežana
authors.initials: S
authors.lastname: Trifunović
authors.affiliation: Faculty of Technical Sciences, Department of Environmental Engineering and Occupational Safety and Health, University of Novi Sad, Trg Dositeja Obradovića 6, 21 000 Novi Sad, Serbia.
authors.forename: Dragan
authors.initials: D
authors.lastname: Adamović
authors.affiliation: Faculty of Technical Sciences, Department of Environmental Engineering and Occupational Safety and Health, University of Novi Sad, Trg Dositeja Obradovića 6, 21 000 Novi Sad, Serbia.
authors.forename: Ivana
authors.initials: I
authors.lastname: Mihajlović
authors.affiliation: Faculty of Technical Sciences, Department of Environmental Engineering and Occupational Safety and Health, University of Novi Sad, Trg Dositeja Obradovića 6, 21 000 Novi Sad, Serbia.
authors.forename: Mirjana
authors.initials: M
authors.lastname: Vojinović Miloradov
authors.affiliation: Faculty of Technical Sciences, Department of Environmental Engineering and Occupational Safety and Health, University of Novi Sad, Trg Dositeja Obradovića 6, 21 000 Novi Sad, Serbia. Electronic address: majaturk@uns.ac.rs.
authors.forename: Maja
authors.initials: M
authors.lastname: Turk Sekulić
mesh_terms: D000327:Adsorption; D002412:Cations / Q000737:chemistry; D002606:Charcoal / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D007700:Kinetics; D019216:Metals, Heavy / Q000737:chemistry / Q000302:isolation & purification*; D008855:Microscopy, Electron, Scanning; D000068220:Prunus avium / Q000737:chemistry*; D062611:Solid Waste; D012996:Solutions; D017550:Spectroscopy, Fourier Transform Infrared; D062065:Wastewater / Q000737:chemistry; D014874:Water Pollutants, Chemical / Q000737:chemistry / Q000302:isolation & purification*; D018508:Water Purification / Q000295:instrumentation / Q000379:methods*
chemical_list: D002412:Cations; D002606:Charcoal; D019216:Metals, Heavy; D062611:Solid Waste; D012996:Solutions; D062065:Wastewater; D014874:Water Pollutants, Chemical
keywords: Adsorption; Aqueous wastes; Heavy metals; Industrial wastes; Sweet and sour cherry kernels