Utilization of Natural Pumice Stone as a Low-Cost Ion Exchanger for Lead (Pb(II)) Removal: A Kinetics, Isotherms and Mechanisms Studies

Authors

• Ahmad Sulaiman, Department of Chemistry, Faculty of Science, University of Tartous, Tartous, SyriaFollow

Abstract

Pumice is one of the raw materials that is widely available, especially in the ``Middle East region and Turkey''. In this research, an ion exchanger was prepared from Syrian pumice by converting it into a low-silica ion exchanger (P_Na) for the removal of Pb²__MATH₀__⁺ uptake was 4.3 mmol/g (308.15 K). Removal efficiency was 100% at low concentrations and >80% at medium/high concentrations. The adsorption kinetics followed a pseudo-first-order model, and the equilibrium data fit well to Langmuir, Freundlich, and Redlich-Peterson isotherms (R² > 0.99).

Keywords

Adsorption isotherm, Exchange-adsorption capacities, Ion exchanger, Pumice, Removal coefficients, Surface area

Subject Area

Chemistry

Article Type

Article

First Page

1473

Last Page

1489

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

How to Cite this Article

Sulaiman, Ahmad (2026) "Utilization of Natural Pumice Stone as a Low-Cost Ion Exchanger for Lead (Pb(II)) Removal: A Kinetics, Isotherms and Mechanisms Studies," Baghdad Science Journal: Vol. 23: Iss. 4, Article 25.
DOI: https://doi.org/10.21123/2411-7986.5280