Abstract
Effects of pH, Eu(III) concentration, ionic strength, temperature and humic acid (HA) on Eu(III) sorption to iron oxides were investigated in detail. The sorption of Eu(III) to iron oxides was significantly dependent on pH and weakly dependent on ionic strength, and higher temperature was gainful to Eu(III) sorption. In the presence of HA, Eu(III) sorption was enhanced significantly at low pH; whilst obvious negative effect was observed in higher pH range. Below 12 mg/L HA, HA could obviously enhanced Eu(III) sorption to iron oxides, nevertheless Eu(III) sorption decreased steeply with increasing HA while HA exceeded 12 mg/L. The results were helpful for understanding radionuclides behaviors in natural environment.
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Financial support from National Natural Science Foundation of China (20871062, J1030932), Fundamental Research Funds for the Central Universities (lzujbky-2010-215) are acknowledged.
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Li, P., Fan, Qh., Pan, Dq. et al. Effects of pH, ionic strength, temperature, and humic acid on Eu(III) sorption onto iron oxides. J Radioanal Nucl Chem 289, 757–764 (2011). https://doi.org/10.1007/s10967-011-1153-4
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DOI: https://doi.org/10.1007/s10967-011-1153-4