Liquid–liquid anion exchange extraction studies of samarium(III) from salicylate media using high molecular weight amine
Liquid–liquid extraction and separation of samarium(III) were carried out by using 0.025 mol dm−3 2-octylaminopyridine(2-OAP) in xylene at 298 K. The extraction behavior of samarium was studied as a function of pH, weak acid concentration, extractant concentration, diluent, and equilibration time. S...
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doaj-12685d30a05844baa3e91df63a89d0752020-11-24T23:14:33ZengElsevierArabian Journal of Chemistry1878-53522015-07-018445646410.1016/j.arabjc.2011.01.026Liquid–liquid anion exchange extraction studies of samarium(III) from salicylate media using high molecular weight amineAniruddha M. Mandhare0Sung-H Han1Mansing A. Anuse2Sanjay S. Kolekar3Analytical Chemistry Laboratory, Department of Chemistry, Shivaji University, Kolhapur 416 004, MS, IndiaInorganic Nano-Material Laboratory, Department of Chemistry, Hanyang University, Seoul 133-791, South KoreaAnalytical Chemistry Laboratory, Department of Chemistry, Shivaji University, Kolhapur 416 004, MS, IndiaAnalytical Chemistry Laboratory, Department of Chemistry, Shivaji University, Kolhapur 416 004, MS, IndiaLiquid–liquid extraction and separation of samarium(III) were carried out by using 0.025 mol dm−3 2-octylaminopyridine(2-OAP) in xylene at 298 K. The extraction behavior of samarium was studied as a function of pH, weak acid concentration, extractant concentration, diluent, and equilibration time. Samarium was quantitatively extracted at pH 7.5 to 10.0 from 0.01 mol dm−3 sodium salicylate solution with 0.025 mol dm−3 2-OAP. The possible composition of the extracted species in organic phase has been determined by using model of slope analysis method and extraction mechanism was found to proceed via an anion exchange mechanism. The stripping efficiency was found to be quantitative in HNO3, HCl and CH3COOH. The robustness of the procedure was demonstrated by the average recoveries obtained (>99.6%) for samarium(III) extraction in the presence of several cations and anions which are commonly associated with it. The proposed method facilitates the separation and determination of samarium(III) from binary and synthetic mixtures. The various thermodynamic functions like free energy (ΔG), enthalpy (ΔH) and entropy (ΔS) of extraction mechanism were discussed.http://www.sciencedirect.com/science/article/pii/S187853521100030XLiquid–liquid extractionSamarium(III)Salicylate2-OctylaminopyridineSynthetic mixtures |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Aniruddha M. Mandhare Sung-H Han Mansing A. Anuse Sanjay S. Kolekar |
spellingShingle |
Aniruddha M. Mandhare Sung-H Han Mansing A. Anuse Sanjay S. Kolekar Liquid–liquid anion exchange extraction studies of samarium(III) from salicylate media using high molecular weight amine Arabian Journal of Chemistry Liquid–liquid extraction Samarium(III) Salicylate 2-Octylaminopyridine Synthetic mixtures |
author_facet |
Aniruddha M. Mandhare Sung-H Han Mansing A. Anuse Sanjay S. Kolekar |
author_sort |
Aniruddha M. Mandhare |
title |
Liquid–liquid anion exchange extraction studies of samarium(III) from salicylate media using high molecular weight amine |
title_short |
Liquid–liquid anion exchange extraction studies of samarium(III) from salicylate media using high molecular weight amine |
title_full |
Liquid–liquid anion exchange extraction studies of samarium(III) from salicylate media using high molecular weight amine |
title_fullStr |
Liquid–liquid anion exchange extraction studies of samarium(III) from salicylate media using high molecular weight amine |
title_full_unstemmed |
Liquid–liquid anion exchange extraction studies of samarium(III) from salicylate media using high molecular weight amine |
title_sort |
liquid–liquid anion exchange extraction studies of samarium(iii) from salicylate media using high molecular weight amine |
publisher |
Elsevier |
series |
Arabian Journal of Chemistry |
issn |
1878-5352 |
publishDate |
2015-07-01 |
description |
Liquid–liquid extraction and separation of samarium(III) were carried out by using 0.025 mol dm−3 2-octylaminopyridine(2-OAP) in xylene at 298 K. The extraction behavior of samarium was studied as a function of pH, weak acid concentration, extractant concentration, diluent, and equilibration time. Samarium was quantitatively extracted at pH 7.5 to 10.0 from 0.01 mol dm−3 sodium salicylate solution with 0.025 mol dm−3 2-OAP. The possible composition of the extracted species in organic phase has been determined by using model of slope analysis method and extraction mechanism was found to proceed via an anion exchange mechanism. The stripping efficiency was found to be quantitative in HNO3, HCl and CH3COOH. The robustness of the procedure was demonstrated by the average recoveries obtained (>99.6%) for samarium(III) extraction in the presence of several cations and anions which are commonly associated with it. The proposed method facilitates the separation and determination of samarium(III) from binary and synthetic mixtures. The various thermodynamic functions like free energy (ΔG), enthalpy (ΔH) and entropy (ΔS) of extraction mechanism were discussed. |
topic |
Liquid–liquid extraction Samarium(III) Salicylate 2-Octylaminopyridine Synthetic mixtures |
url |
http://www.sciencedirect.com/science/article/pii/S187853521100030X |
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