Adsorption Ability of Nitrogen-Containing Polymer Sorbents Based on Urea-Formaldehyde Resin and Aminoacetic Acid Towards Heavy Metal Ions

IF 1 4区化学 Q4 POLYMER SCIENCE

Polymer Science, Series A Pub Date : 2024-02-11 DOI:10.1134/S0965545X23600679

N. A. Ermuratova, Kh. Kh. Turaev, K. N. Kornilov, M. Zh. Abduvalieva, N. B. Chorieva

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Abstract

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.

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基于脲醛树脂和氨基乙酸的含氮聚合物吸附剂对重金属离子的吸附能力

摘要基于尿素、甲醛和氨基乙酸的聚酰胺吸附剂的新改性已被制备出来，在合成过程中试剂的比例有所不同。研究表明，最佳合成温度为 90°C。对聚酰胺的热稳定性进行了分析。研究了聚酰胺对 d 元素离子的吸附特性。考虑了合成温度对聚合体比容和静态交换容量的影响。还评估了介质 pH 值对铜(II)离子在聚两性聚合物中吸附的影响。结果发现，在 pH 值为 5.5 至 6.5 时，所考虑的吸附剂的吸附率最高。以尿素、甲醛和氨基乙酸的比例 2 : 5 : 0.7 制备的聚合体对 d 元素离子的吸附能力最高。在溶液温度为 20°C 时，吸附率最高。吸附作用遵循弗赖德利希方程。

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来源期刊

Polymer Science, Series A 化学-高分子科学

CiteScore

1.70

自引率

0.00%

发文量

审稿时长

3 months

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.