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Removal of lead(II) from water using activated carbon developed from jujube stones,a low-cost sorbent |
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| Authors: | Nasma Bouchelkia Lazhar Belkhiri Abdelkrim Bouzaza Jean-Claude Bollinger Khoudir Madani |
| Affiliation: | 1. Laboratoire de Gestion et Valorisation des Ressources Naturelles et Assurance Qualité. Faculté SNVST, Université Akli Mohand Oulhadj, Bouira, Algeria;2. Département d’Hydraulique, Université de Batna, Batna, Algeria;3. Laboratoire Sciences Chimiques de Rennes – Equipe Chimie et Ingénierie des Procédés, UMR 6226 CNRS, ENSCR, Rennes, France;4. Groupement de Recherche Eau-Sol-Environnement (GRESE), Université de Limoges, Limoges, France;5. Laboratoire de Biomathématiques, Biophysique, Biochimie, et Scientométrie, Faculté des Sciences de la Nature et de la Vie, Université de Bejaia, Bejaia, Algeria |
| Abstract: | The preparation of activated carbon from jujube stones with H2SO4 activation and its ability to remove lead from aqueous solutions were reported in this study. The surface structure of the activated carbon was characterized by various physico-chemical methods. Sorption studies were carried out by varying the initial metal ion and the pH: the amount of sorbed Pb(II) ions increased with increasing pH and initial Pb(II) ions concentration. The removal of lead ions was rapid and the kinetic of sorption can be well described by pseudo-second order modelling. The Langmuir model conveniently fits the data of isotherm experiments and the monolayer sorption capacity of Pb(II) ions was determined as 71.43 mg/g at pH 6.0 and 25°C. These results showed that activated carbon prepared from jujube stones could be considered for application as a potential sorbent for the removal of lead from wastewaters. |
| Keywords: | Chemical activation jujube stones lead sorption isotherms sorption kinetics |