| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 4979549 | Journal of Hazardous Materials | 2017 | 31 Pages |
Abstract
In this study, Fe-Mn binary oxides, which harbor the strong oxidative power of manganese dioxide and the high adsorption capacity of iron oxides, were synthesized for Tl(I) removal using a concurrent chemical oxidation and precipitation method. The adsorption of Tl onto the Fe-Mn adsorbent was fast, effective, and selective, with equilibrium sorption reaching over 95% under a broad operating pH (3-12), and high ionic strength (0.1-0.5Â mol/L). The adsorption can be well fitted with both Langmuir and Freundlich isotherms, and the kinetics can be well described by the pseudo-second-order model. Fourier transform infrared (FT-IR) and X-ray photoelectron spectroscopy (XPS) spectra suggest that surface complexation, oxidation and precipitation were the main mechanisms for the removal of Tl. This study shows that the Fe-Mn binary oxides could be a promising adsorbent for Tl removal.
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Authors
Huosheng Li, Yongheng Chen, Jianyou Long, Xiuwan Li, Daqian Jiang, Ping Zhang, Jianying Qi, Xuexia Huang, Juan Liu, Ruibing Xu, Jian Gong,