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Selective adsorption of thorium on activated charcoal from electrolytic aqueous solution

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Abstract

The adsorption of thorium on activated charcoal has been studied as a function of shaking time, amount of adsorbent, pH, concentration of adsorbate and temperature. Adsorption of thorium obeys the Langmuir isotherm. ΔH0 and ΔS0 were calculated from the slope and intercept of ln KD vs. 1/T plots. The influence of different anions and cations on thorium adsorption has been examined. The adsorption of other metal ions on activated charcoal has been studied under specified conditions to check its selectivity. Consequently, thorium was removed from Cs, Co, Ba, Cr, Sr, Cd, Cu, Mn and Zn. More than 98% adsorbed thorium on activated charcoal can be recovered with 55 ml 3M HNO3 solution. Wavelength dispersive X-rays fluorescence spectrometer was used for measuring thorium concentration.

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Authors and Affiliations

  1. Pakistan Institute of Nuclear Science and Technology, P.O. Box No. 1356, Islamabad, Pakistan

    Riaz Qadeer & Javed Hanif

  2. Department of Chemistry, Quaid-i-Azam University, Islamabad, Pakistan

    M. Saleem & M. Afzal

Authors
  1. Riaz Qadeer
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  2. Javed Hanif
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  3. M. Saleem
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  4. M. Afzal
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Qadeer, R., Hanif, J., Saleem, M. et al. Selective adsorption of thorium on activated charcoal from electrolytic aqueous solution. Journal of Radioanalytical and Nuclear Chemistry, Articles 157, 321–334 (1992). https://doi.org/10.1007/BF02047447

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  • DOI: https://doi.org/10.1007/BF02047447

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