Abstract
Interaction mechanism of Eu(III) on magnetic biochar(MB) was investigated by batch, XPS, EXAFS and modeling techniques. Maximum Eu(III) adsorption capacity on MB is 105.53 mg/g at pH 3.0, which was demonstrated to various functional groups by XPS analysis. No effect of ionic strength revealed inner-sphere surface complexation. According to EXAFS analysis, inner-sphere surface complexation and surface co-precipitation dominated the Eu(III) adsorption at low and high pH, respectively. Eu(III) adsorption can be simulated by surface complexation modeling. These results indicated that MB can be used a promising candidate for the highly effective adsorbent of radionuclides.
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Financial support from Natural Science Foundation of China (21577093) and Science and Technology Project of Shaoxing (2014B70041) are acknowledged.
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Zhu, Y., Zheng, C., Wu, S. et al. Interaction of Eu(III) on magnetic biochar investigated by batch, spectroscopic and modeling techniques. J Radioanal Nucl Chem 316, 1337–1346 (2018). https://doi.org/10.1007/s10967-018-5839-8
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DOI: https://doi.org/10.1007/s10967-018-5839-8