Removal of lithium from water by aminomethylphosphonic acid containing resin

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Aydın Çiçek
Onur Yılmaz
Ozgur Arar
http://orcid.org/0000-0002-3687-9534

Abstract

This paper gives an overview of the ability of an aminomethyl­phos­phonic acid-containing chelating resin for the removal of lithium from water. The studies were performed under various conditions, such as resin dose, initial Li+ concentration, solution pH and solution temperature. The results showed that the sorption of Li+ reached equilibrium within 15 min and the experimental data were well-fitted by the pseudo-second-order kinetic model. The Li+ sorp­tion was highly pH dependent, and the optimum pH for Li+ removal was ≥3. Isotherm sorption data displayed good correlation with the Langmuir model, and the maximum monolayer sorption capacity of the resin found to be 13.65 mg g-1. Thermodynamic studies suggested that Li+ sorption onto the chelating resin was an exothermic and spontaneous process in nature. The resin could be regenerated by 0.1 M HCl, NaCl or H2SO4 with > 99 % efficiency. Desorption of Li+ with 0.1 M NaCl resulted in no changes in the uptake capacity through four sequential sorption/desorption cycles.

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How to Cite
[1]
A. Çiçek, O. Yılmaz, and O. Arar, “Removal of lithium from water by aminomethylphosphonic acid containing resin”, J. Serb. Chem. Soc., vol. 83, no. 9, pp. 1059–1069, Sep. 2018.
Section
Environmental Chemistry
Author Biographies

Aydın Çiçek, Ege University, Faculty of Science, Department of Chemistry, 35100, Izmir

Faculty of Science
Department of Chemistry
35100 IZMIR, TURKEY

Onur Yılmaz, Ege University, Faculty of Science, Department of Chemistry, 35100, Izmir

Faculty of Science
Department of Chemistry
35100 IZMIR, TURKEY

Ozgur Arar, Ege University, Faculty of Science, Department of Chemistry, 35100, Izmir

Ozgur ARAR, Ph.D.
Chemist
Ege University
Faculty of Science
Department of Chemistry
35100 IZMIR, TURKEY
Tel: +90-2323112389
Fax: +90-2323888264
E-mail: ozgur.arar@ege.edu.tr
ozgurarar@gmail.com

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