کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5409742 | 1506550 | 2016 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The biosorption of Sr(II) on Bacillus subtilis: A combined batch and modeling study
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: The biosorption of Sr(II) on Bacillus subtilis: A combined batch and modeling study The biosorption of Sr(II) on Bacillus subtilis: A combined batch and modeling study](/preview/png/5409742.png)
چکیده انگلیسی
The batch macroscopic experiments showed that the biosorption kinetics of Sr(II) on Bacillus subtilis can be fitted by pseudo-second-order kinetic model very well, and adsorption isotherms can be satisfactorily fitted by Langmuir model with high correlation coefficient (R2Â >Â 0.995). The independent of ionic strength of Sr(II) biosorption on B. subtilis at pHÂ 2.0-11.0 indicated the inner-sphere surface complexation. The maximum adsorption capacity of Sr(II) on B. subtilis calculated from Langmuir model at pHÂ 5.0 and 293Â K was 49.75Â mg/g. The fitted results of the surface complexation modeling revealed that the biosorption of Sr(II) on B. subtilis can be simulated by diffuse layer modeling with two inner-sphere surface complexes such as SOSr+ and SOSr(OH)2â species. Theses observation indicated that B. subtilis can be regarded as a promising bio-adsorbent candidate for the preconcentration and immobilization of radionuclides from aqueous solutions in the environmental remediation.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Molecular Liquids - Volume 220, August 2016, Pages 762-767
Journal: Journal of Molecular Liquids - Volume 220, August 2016, Pages 762-767
نویسندگان
Yingwei Guo, Weigang Du, Song Wang, Liqiang Tan,