Aminothiozolyl maleamic acid based multi chelating hydrogels for the separation of uranium (VI) ions from aqueous environment

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• 作者：N. Sivagangi Reddy ; K.S.V. Krishna Rao ; K. Madhusudana Rao ; Surendran Parambadath and Chang Sik Ha
• 刊名：Polymers for Advanced Technologies
• 出版年：2016
• 出版时间：October 2016
• 年：2016
• 卷：27
• 期：10
• 页码：1317-1324
• 全文大小：299K
• ISSN：1099-1581

文摘

Multi chelating hydrogels (MCHs) were synthesized using a simple radical polymerization method from acrylamide, hydroxyethyl acrylate, and N-(2-aminothiozolyl)maleamic acid (AMA) monomers, methylenebisacrylamide (MBA) a cross-linker, and azobisisobutyronitrile (AIBN) an initiator. The resulting MCHs were characterized with Fourier transform infrared spectroscopy and scanning electron microscopy to confirm the formation and morphological properties. The MCHs were highly swellable in aqueous solutions as well as different pH conditions. MCHs were applied to evaluate uptake behavior of Uranium (VI) ion from aqueous solutions. Batch adsorption studies were performed by varying experimental conditions like contact time, pH, and initial metal ion concentration. The kinetics data was best suited with the second-order equation model. The equilibrium adsorption data was correlated with Langmuir and Freundlich isotherm models. This study suggests that maximum Uranium (VI) ion uptake has been found to be 288 mg.g⁻¹ and regenerated for 5 cycles without any significant change. Copyright