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Bayberry Tannin immobilized Bovine Serum Albumin Nanospheres: Characterization, Irradiation Stability and Selective Removal Uranyl Ion from Radioactive Wastewater

Abstract

With the widespread uses of nuclear energy, uranium contained radioactive waste water has raised global concerns on environmental sustainability, calling for high-performance materials in effective pollution treatments. Here, a novel adsorbent was prepared by immobilizing bayberry tannin onto bovine serum albumin nanospheres (BSA-BT-NSs), which was shaped by the desolvent method. The as-prepared adsorbent was characterized by SEM, TEM, FT-IR, and XPS, and showed excellent adsorption capacity and high selective adsorption for uranyl ion (UO22+) from radioactive wastewater, in which included Fe3+, Mn2+, Cs2+, Co2+, and Sr2+. The effects of different adsorption parameters such as pH, temperature, time, and initial UO22+ concentration were investigated. The adsorption isothermal data were well fitted by the Langmuir isotherm model, and the maximum adsorption capacity of 487.805 mg g-1 was estimated. Furthermore, BSA-BT-NSs possess excellent stability under 60Co γ-ray irradiation at the total doses ranging from 10 kGy to 350 kGy. These facts indicated that BSA-BT-NSs could be used as a low-cost and environmental-friendly adsorbent for UO22+ removal with high efficiency and selectivity from various uranium-containing radioactive industrial effluents. More importantly, combined with the characterization analysis, adsorption experiments results, and theory calculation based on the Density Functional Theory, the adsorption mechanism of BSA-BT-NSs is revealed.

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Publication details

The article was received on 28 May 2018, accepted on 05 Jul 2018 and first published on 06 Jul 2018


Article type: Paper
DOI: 10.1039/C8TA05000G
Citation: J. Mater. Chem. A, 2018, Accepted Manuscript
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    Bayberry Tannin immobilized Bovine Serum Albumin Nanospheres: Characterization, Irradiation Stability and Selective Removal Uranyl Ion from Radioactive Wastewater

    J. Yu, X. luo, B. Liu, J. Zhou, J. Feng, W. Zhu, S. Wang, Y. Zhang, X. Lin and P. Chen, J. Mater. Chem. A, 2018, Accepted Manuscript , DOI: 10.1039/C8TA05000G

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