کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
691022 | 1460421 | 2015 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Application of recycled iron oxide for adsorptive removal of strontium
ترجمه فارسی عنوان
استفاده از اکسید آهن بازیافت شده برای حذف جاذب استرانسیم
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کلمات کلیدی
برو جذب، استرونتیوم، سینتیک، ترمودینامیک،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
تکنولوژی و شیمی فرآیندی
چکیده انگلیسی
To remove strontium (Sr) efficiently from aqueous solutions is important as Sr-90 is a radionuclide and could be a serious threat to the environment. This study examines the feasibility of Sr-90 removal using BT9, generated from a FBR-Fenton facility that was utilized in treating tannery wastewater. A rapid increased of Sr adsorption was detected when the solution pH increased from 7.11 to 11.22. A maxima adsorption capacity was estimated to be 29.85 mg Sr/g BT9 at 323 K and pH 11.22. Additionally, Sr adsorption decreases with the increase of the M/Sr from 0 to 100, indicating that the outer-sphere mechanism was importantly involved in the Sr adsorption. This Sr adsorption is spontaneous and endothermic, supported by the negative changed standard free energy with temperatures (ÎG° = â5.75, â6.26, â6.72 kJ/mol at 288, 303, and 323 K, respectively) and the positive ÎH° values (2.14 kJ/mol). The positive ÎS° (27.49 J/mol K) further indicates that the randomness increased at solid-solution interface during Sr adsorption.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of the Taiwan Institute of Chemical Engineers - Volume 53, August 2015, Pages 92-97
Journal: Journal of the Taiwan Institute of Chemical Engineers - Volume 53, August 2015, Pages 92-97
نویسندگان
Yao-Jen Tu, Chen-Feng You, Yi-Ru Chen, Chun-Ping Huang, Yao-Hui Huang,