In situ growth of Prussian blue nanocrystal within Fe3+ crosslinking PAA resin for radiocesium highly efficient and rapid separation from water
| 第一作者： |
杨红军 |
| 英文第一作者： |
Yang, H. J. |
| 联系作者： |
于洪文 |
| 英文联系作者： |
Yu, H. W. |
| 发表年度： |
2015 |
| 卷： |
277 |
| 摘要： |
A new nanocomposite, called FPPB, was prepared by the in situ synthesis of a Prussian blue (PB) nanocrystal within Fe3+ crosslinking poly(acrylic acid) (PM) resin for the highly efficient and rapid separation of radiocesium from water. The adsorption of Cs+ by FPPB follows the Langmuir and Freundlich isotherm model with distribution coefficients touched 1.15 x 10(5) mL/g and a good adsorption capacity of 72.47 mg/g (pH approximate to 7). FPPB displays high adsorption capacity for Cs+ capture under a wide pH range (4.0-10). The kinetics of Cs+ uptake by FPPB is fast (>90% elimination capacity of relatively low Cs+ concentrations during only 20 min of Cs+/FPPB contact) and fit well with the pseudo-second-order kinetic model. This should be attributed to the high dispersion of PB nanoparticles. The adsorption Cs+ from complex solutions containing various competitive cations in large excess was also effective. FPPB is a cost-effective sorbent and could be developed by only stirring using environmental friendly and inexpensive materials at room temperature. Furthermore, the FPPB-Cs+ can be easily retrieved from water with sieve. It is expected that the as-prepared FPPB has extensive applicability in the elimination of radiocesium from nuclear wastewater. |
| 刊物名称： |
Chemical Engineering Journal |
| 参与作者： |
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