Статья

A novel extractant-impregnated resin containing carminic acid for selective separation and pre-concentration of uranium(VI) and thorium(IV)

Ahmad Hosseini–Bandegharaei Department of Engineering, Kashmar Branch, Islamic Azad University, Kashmar, P.O. Box 102, IranMohammad Saeid Hosseini Department of Chemistry, Faculty of Science, University of Birjand, Birjand, P.O. Box 414, IranYousef Jalalabadi Department of Engineering, Kashmar Branch, Islamic Azad University, Kashmar, P.O. Box 102, IranMehdi Nedaie Department of Engineering, Kashmar Branch, Islamic Azad University, Kashmar, P.O. Box 102, IranMasoud Sarwghadi Department of Engineering, Kashmar Branch, Islamic Azad University, Kashmar, P.O. Box 102, IranAkram Taherian Department of Engineering, Kashmar Branch, Islamic Azad University, Kashmar, P.O. Box 102, IranEsmat Hosseini Department of Engineering, Kashmar Branch, Islamic Azad University, Kashmar, P.O. Box 102, Iran

2011en

ABI

Аннотация

Abstract The present work proposes the use of a novel extractant-impregnated resin (EIR) as an adsorbent in trace separation and pre-concentration of U(VI) and Th(IV) ions. The new EIR was prepared by impregnating carminic acid onto Amberlite XAD-16 resin beads. The morphology of new EIR was studied by BET surface area measurements and SEM micrographs. A column packed with CA/XAD-16 was used for selective separation and pre-concentration of the metal ions. Maximum adsorption of Th(IV) and U(VI) ions occurred at pHs of 3.50–5.75 and 3.75–6.50, respectively. The adsorbed metals could be eluted sequentially using 0.55 mol L−1 HCl for U(VI) and 2.25 mol L−1 HCl for Th(IV). The dynamic capacity of EIR was found to be 0.832 and 0.814 mmol g−1 for Th(IV) and U(VI), respectively. The tolerance limit of some foreign ions was also studied. The proposed method showed a good performance in analyzing geological reference materials and a synthetic seawater sample. Furthermore, the above procedure was successfully employed for the analysis of natural water samples. Keywords: extractant-impregnated resinU(VI) and Th(IV) separationcarminic acidamberlite XAD-16

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Идентификаторы

DOI: 10.1080/03067319.2011.620706

Цитирования и источники

Цитирований: 2Использованных источников: 0

Показатели — AkademScholar