Removal of lead (II) and copper (II) from aqueous solution using pomegranate peel as a new adsorbent

By E-S. Z. El-Ashtoukhy, N. Amin, O. Abdelwahab. 2008

589 citations recorded by the source corpus.

Abstract The effective removal of heavy metals from aqueous wastes is among the most important issues for many industrialized countries. Removal of lead (II) and copper (II) from aqueous solutions were studied using pomegranate peel (raw), activated carbon prepared from pomegranate peel (AC1) and activated carbon prepared from chemically treated pomegranate peel (AC2 and AC3). Batch adsorption experiments were performed as a function of pH, contact time, solute concentration and adsorbent dose. The optimum pH required for maximum adsorption were found to be 5.6 and 5.8, for lead and copper respectively. The experimental equilibrium adsorption data are tested for the Langmuir, Freundlich and Temkin equations. Results indicate the following order to fit the isotherms: Langmuir > Temkin > Freundlich in case of lead ions and Freundlich > Temkin > Langmuir in case of copper ions. Adsorption kinetics data were modeled using the pseudo-first and pseudo-second order, Elvoich equations and intraparticle diffusion models. The results indicate that the second-order model best describes adsorption kinetic data.

Subfields: Water Science and Technology

View Paper: https://www.semanticscholar.org/paper/fa0966f61c733bc215e56ba32f985d82cd790116

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In Water Science and Technology

Citations in the corpus

Adsorption of Cd(II) and Pb(II) ions from aqueous solutions using mesoporous activated carbon adsorbent: Equilibrium, kinetics and characterisation studies (2017, methodology): “Similar conclusions on the effect of contact time on sorption of adsorbate onto adsorbents have been proposed by studies reported in literature (El-Ashtoukhy et al., 2008; Iqbal et al., 2009b).”
Heavy Metals Removal Using Activated Carbon, Silica and Silica Activated Carbon Composite (2014, background): “[16] who explained that at low concentrations, metals are adsorbed by specific sites, while with increasing metal concentrations the specific sites are saturated and the exchange sites are filled.”
Life cycle environmental and economic performance of biochar compared with activated carbon: A meta-analysis (2017, methodology): “…and reduction, filtration, 52 membrane technology (separation), reverse osmosis, electrochemical treatment, electrodialysis, electroflotation, 53 electrolytic recovery, and adsorption by activated carbon (El-Ashtoukhy et al. 2008; Inyang et al. 2012; Pellera et al. 54 2012; Zheng et al. 2008).”
Removal of Heavy Metals Using Nanostructured Graphite Oxide, Silica Nanoparticles and Silica/ Graphite Oxide Composite (2014, background): “who reported that at low concentration, metals are absorbed at specific sites, while with increasing metal concentration, the specific sites are saturated and the exchange sites are filled [2,28].”