Al-Mahadeen, Mohammed M. and Jiries, Anwar G. and Al-Trawneh, Salah A. and Alshahateet, Solhe F. and Eldouhaibi, Ahmad S. and Sagadevan, Suresh (2021) Kinetics and equilibrium studies for the removal of heavy metal ions from aqueous solution using the synthesized C-4-bromophenylcalix4] resorcinarene adsorbent. Chemical Physics Letters, 783. ISSN 0009-2614, DOI https://doi.org/10.1016/j.cplett.2021.139053.
Full text not available from this repository.Abstract
Heavy metal ion adsorbent (C-4-bromophenylcalix4]resorcinarene) was successfully synthesized. Several heavy metal ions including lead (Pb (II)), cobalt (Co (II)), copper (Cu (II)), manganese (Mn (II)), and zinc (Zn (II)) were selected to evaluate the adsorbent efficiency of the newly synthesized adsorbent. Various parameters such as adsorbate dose, agitation time, and solution's pH were optimized to approach the maximum removal efficiency. In addition, the adsorbent performance was analyzed against two kinds of solutions containing individual and mixture of the selected heavy metal ions. It was observed that the maximum efficiency could be obtained by adjusting the pH of the solution to 5.6 and 30 min contact time. This results in the decrease of the cation removal percentage by the applied adsorbent. As the results show, a 30 min contact time was sufficient to achieve maximum adsorption of the selected heavy metal ions on the synthesized adsorbent. Among the three models, the pseudo-2nd order kinetics was more consistent with the obtained experimental data. Therefore, the pseudo-2nd order model is better suited to explain the kinetics of the heavy metal ions on the synthesized adsorbent. Analysis of the solutions containing the individual heavy metal ions revealed that the adsorption capacity increased as Cu (II) > Pb (II) > Zn (II) > Mn (II) > Co (II). However, the capacity adsorption ranking of Cu (II) > Co (II) > Mn (II) > Pb (II) > Zn (II) was observed for the heavy metal ion mixture. Furthermore, the rate constant value, obtained through the Ho pseudo-second-order model, was ranked for the metal ions as the following: Co (II) > Cu (II) > Zn (II > Mn (II) > Pb (II).
| Item Type: | Article |
|---|---|
| Funders: | Mutah University |
| Uncontrolled Keywords: | Adsorption; Heavy metal ion adsorbent; Atomic absorption spectroscopy; Adsorption selectivity; C-4-bromophenylcalix4]resorcinarene |
| Subjects: | Q Science > Q Science (General) Q Science > QC Physics Q Science > QD Chemistry |
| Divisions: | Nanotechnology & Catalysis Research Centre |
| Depositing User: | Ms Zaharah Ramly |
| Date Deposited: | 31 Jul 2022 15:40 |
| Last Modified: | 31 Jul 2022 15:40 |
| URI: | http://eprints.um.edu.my/id/eprint/28371 |
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