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The effect of uranium speciation on the removal of gross alpha activity from acid mine drainage using anion exchange resin |
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| Authors: | Dlamini Thulani C Tshivhase Victor M Maleka Peane Penabei Samafou Mashaba Machel |
| Institution: | 1.Centre for Applied Radiation Science and Technology, North-West University, Mafikeng, South Africa ;2.Nuclear Physics Group, iThemba LABS (Laboratory for Accelerator Based Sciences), Cape Town, South Africa ;3.ATRSN (Agence Tchadienne de la Radioprotection et la Sûreté Nucléaire), N’Djamena, Chad ;4.Department of Physics, University of Botswana, Gaborone, Botswana ; |
| Abstract: | The study was conducted to understand, (a) the effect of pH on the speciation of uranium in acid mine drainage and (b) determine the effect of uranium speciation on the removal of gross alpha activity from acid mine drainage. Speciation modeling predicted a dominance of neutral and positively charged species under acidic and neutral conditions. Negative species become dominant from pH 8. The effectiveness of the anionic exchange resin to remove gross alpha activity was lower under acidic conditions (pH < 6) compared to alkaline conditions (pH ≥ 8). |
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