Sorption of Cerium by the Pani / Cnt Composition from Sulfuric Chloride Solution

Ybraimzhanova L.K. Bektenov N.A. Troshkina I.D. Burakova I.V.
December 2022 Islamic Azad University

Journal of Chemical Health Risks
2022 #12 Issue 4 641 - 647 pp.

The purpose of the work is to study the sorption characteristics of a composite material based on carbon nanotubes and polyaniline (PANI/CNT) during the extraction of cerium from sulfuric chloride solutions. The sorption characteristics of a composite material based on carbon nanotubes and polyaniline (PANI/CNT) during the extraction of cerium from sulfuric chloride acid solutions are investigated. Nanocomposite polyaniline (60 wt.%)/CNT was prepared by oxidative polymerization of aniline on the CNT surface. Morphological and structural characteristics of the material were obtained using scanning electron microscopy.Using the PANI/CNT nanocomposite, a isotherm of cerium adsorption was obtained from aqueous solutions of the above composition, which has a linear character and can be described by the Henry equation.The kinetic constants obtained by processing the data on pseudo-first and pseudo-second order models and the Elovich model indicate that the kinetics of cerium adsorption on the PANI / CNT nanocomposite with a higher value of the correlation coefficient is described using a pseudo-second order model. Moreover, it was found that the equilibrium sorption time was 30 min, and the adsorption capacity of the sorbent was 15 mg g^-1. Data processing using kinetic models showed that absorption occurs due to the chemical interaction of cerium and the functional groups of the nanocomposite. As a consequence, it can be assumed that the chemical interaction with surface functional groups-carboxylic, phenolic, etc. – contributes to the adsorption mechanism of cerium by the PANI-CNT nanocomposite.

Activated carbon , Adsorption , Henry constant , Isotherm , Kinetic models

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M.Kh.Dulaty Taraz State University, Taraz city, Kazakhstan
JSC A. Bekturov Institute of Chemical Sciences, Republic of Kazakhstan, Almaty, Kazakhstan
Dmitry Mendeleev University of Chemical Technology of Russia, Miusskaya sq. 9, Moscow, 125047, Russian Federation
Tambov State Technical University, 106 Sovetskaya Street, Tambov, 392000, Russian Federation

M.Kh.Dulaty Taraz State University
JSC A. Bekturov Institute of Chemical Sciences
Dmitry Mendeleev University of Chemical Technology of Russia
Tambov State Technical University

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