Sorption Of Cerium By The Pani / Cnt Composition From Sulfuric Chloride Solution

Journal of Chemical Health Risks

دوره 12، شماره 4، اسفند 2022، صفحه 641-647   

نوع مقاله: Original Article

شناسه دیجیتال (DOI): 10.22034/jchr.2022.689795

نویسندگان

L.K. Ybraimzhanova^{* 1}؛ N.A. Bektenov²؛ I.D. Troshkina³؛ I.V. Burakova⁴

¹M.Kh.Dulaty Taraz State University, Republic of Kazakhstan, Taraz city

²JSC A.Bekturov Institute of Chemical Sciences, Republic of Kazakhstan, Almaty

³Dmitry Mendeleev University of Chemical Technology of Russia, Miusskaya sq. 9, 125047 Moscow, Russia

⁴Tambov State Technical University, 106 Sovetskaya Street, Tambov 392000, Russia

چکیده

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. 

کلیدواژه‌ها

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

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