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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… Click to show full 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.
Journal Title: Journal of Radioanalytical and Nuclear Chemistry
Year Published: 2018
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