Abstract
Chitosan–clinoptilolite composite was prepared and tested for removing radiocobalt from aqueous solution. The composite was characterized with Fourier transform infrared spectroscopy, X-ray diffraction analysis and scanning electron microscopy coupled with energy dispersive X-ray analysis. The sorption of Co(II) on chitosan–clinoptilolite composite was pH-dependent and ionic strength-independent. The kinetic sorption was fitted well by a pseudo-second-order rate equation. The thermodynamic parameters (ΔH 0, ΔS 0, ΔG 0) revealed that the sorption of Co(II) on chitosan–clinoptilolite composite was spontaneous and endothermic. The study showed that chitosan–clinoptilolite composite had excellent potential for the treatment of wastewater containing radiocobalt.
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We thank the financial supports by the National Natural Science Foundation of China (Grant No. 11275147), Program for Changjiang Scholars and Innovative Research Team in University (No: IRT1280), and the Fundamental Research Funds for the Central Universities.
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Zhao, Y., Zhao, X., Deng, J. et al. Utilization of chitosan–clinoptilolite composite for the removal of radiocobalt from aqueous solution: kinetics and thermodynamics. J Radioanal Nucl Chem 308, 701–709 (2016). https://doi.org/10.1007/s10967-015-4475-9
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DOI: https://doi.org/10.1007/s10967-015-4475-9