N. A. Ermuratova, Kh. Kh. Turaev, K. N. Kornilov, M. Zh. Abduvalieva, N. B. Chorieva
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Adsorption Ability of Nitrogen-Containing Polymer Sorbents Based on Urea-Formaldehyde Resin and Aminoacetic Acid Towards Heavy Metal Ions
New modifications of a polyampholyte sorbent based on carbamide (urea), formaldehyde, and aminoacetic acid, differing in the reagents ratio during the synthesis, have been prepared. It has been shown that the optimal synthesis temperature is 90°C. Thermal stability of the polyampholyte has been analyzed. Sorption properties of the polyampholyte towards d-element ions have been investigated. The effect of the synthesis temperature on specific volume and static exchange capacity of the polyampholyte has been considered. The influence of the medium pH on sorption of copper(II) ions with the polyampholyte has been evaluated. It has been found that the sorption degree by the considered sorbents is the highest at pH from 5.5 to 6.5. The polyampholyte prepared at the urea, formaldehyde, and aminoacetic acid ratio 2 : 5 : 0.7 has revealed the highest sorption capacity towards the d-element ions. The sorption rate has been maximum at the solution temperature of 20°C. The adsorption has been shown to follow the Freundlich equation.
期刊介绍：
Polymer Science, Series A is a journal published in collaboration with the Russian Academy of Sciences. Series A includes experimental and theoretical papers and reviews devoted to physicochemical studies of the structure and properties of polymers (6 issues a year). All journal series present original papers and reviews covering all fundamental aspects of macromolecular science. Contributions should be of marked novelty and interest for a broad readership. Articles may be written in English or Russian regardless of country and nationality of authors. All manuscripts are peer reviewed. Online submission via Internet to the Series A, B, and C is available at http://polymsci.ru.
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