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[CHEMOSPHERE],卷: 216 页: 507-515
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作者: Wei, CL (Wei, Changlong) ; Song, X (Song, Xin) ; Wang, Q (Wang, Qing) ; Liu, Y (Liu, Yun) ; Lin, N (Lin, Na

 

题目:Influence of coexisting Cr(VI) and sulfate anions and Cu(II) on the sorption of F-53B to soils 

 

刊物:CHEMOSPHERE,卷: 216  页: 507-515

DOI: 10.1016/j.chemosphere.2018.10.098

出版年: FEB 2019 

 

文章下载:https://ac.els-cdn.com/S0045653518319593/1-s2.0-S0045653518319593-main.pdf?_tid=11fa8a32-78f1-4a42-a03e-4ce3cfec4452&acdnat=1545007685_f4a34c73bb565f7c10f968f86e3905f7

 

摘要:

6:2 chlorinated polyfluorinated ether sulfonate (trade name F-53B), a perfluorooctane sulfonate alternative used as a mist suppressant in the chromium plating industry, is environmentally persistent and bioaccumulative. In this study, the kinetic and equilibrium data of F-53B sorption onto soils were obtained to investigate the relationship between sorption parameters and soil attributes. The effects of potential coexisting Cu(II), anionic Cr(VI) and sulfate on F-53B sorption by soils were explored. This is the first report of the effects of F-53B sorption behavior on soils with coexisting contaminants of Cu(II) and Cr(VI). The results showed that sorption kinetics of F-53B on soils could be well-fitted by the pseudo second -order model. The maximum F-53B sorption capacity ranged from 22.71 to 92.36 mg/kg on six different soils, and the correlation analysis indicated a positive relationship between the maximum sorption capacity and the soil organic content, Al2O3, and Fe2O3. The desorption percentages of F-53B in this study, defined as the proportion of sorbed F-53B on soils that was recovered upon desorption, were lower than 8.2%. Moreover, F-53B sorption capacities generally decreased in the presence of Cu(II), Cr(VI), and sulfate, indicating that these ions can facilitate the F-53B mobility in the subsurface. Taken together, these findings suggest that electrostatic interaction, hydrophobic interaction, ligand exchange, and surface complexation contributed to the F-53B sorption on soils. (C) 2018 Elsevier Ltd. All rights reserved.

 

 

 

 

 

 

 

 


 

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