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Solvent extraction of La(III) using Cyanex 921 in petrofin and modelling of data by linear and nonlinear techniques

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Abstract

Influence of various parameters affecting the extraction of La(III) from acidic nitrate medium has been analysed. The extraction of 99.1% La(III) from 0.01 mol/L HNO3 and 1 M NaNO3 has been obtained using 0.3 mol/L Cyanex 921 in petrofin. The ∆H 0, ∆S 0 calculated from temperature variation experiments and were found to be negative. Stripping has been effectively achieved using low concentrations of HCl and H2SO4. Separation of La(III) from other lanthanides (Ce, Pr, Nd, Sm) has shown maximum separation factor for La–Sm pair. Modelling of data has been performed using MLR, ANN and ANFIS.

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Acknowledgements

The authors express their sincere gratitude to the authorities of Siksha ‘O’ Anusandhan University for the support to conduct this research work. The authors are thankful to Indian Rare Earth Ltd., OSCOM, Odisha for experimental facilities.

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Authors and Affiliations

  1. Department of Chemistry, Institute of Technical Education and Research, Siksha ‘O’ Anusandhan University, Khandagiri Square, Bhubaneswar, Odisha, 751030, India

    Sagarika Acharya & Sujata Mishra

  2. Department of Mathematics, Institute of Technical Education and Research, Siksha ‘O’ Anusandhan University, Khandagiri Square, Bhubaneswar, Odisha, 751030, India

    Sunita Chand

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  1. Sagarika Acharya
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  3. Sunita Chand
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Correspondence to Sujata Mishra.

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Acharya, S., Mishra, S. & Chand, S. Solvent extraction of La(III) using Cyanex 921 in petrofin and modelling of data by linear and nonlinear techniques. J Radioanal Nucl Chem 314, 1813–1824 (2017). https://doi.org/10.1007/s10967-017-5607-1

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  • DOI: https://doi.org/10.1007/s10967-017-5607-1

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