کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6635610 461120 2015 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Coal fly ash as a potential fixation reagent for radioactive wastes
ترجمه فارسی عنوان
خاکستر از خاکستر ذغال سنگ به عنوان یک رقیق کننده احتمالی برای ضایعات رادیواکتیو
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
چکیده انگلیسی
FAs are utilized worldwide, mainly as a cement additive for the construction industry. Recently, it was demonstrated that Class F FA can act as an excellent fixation reagent for acidic wastes from the phosphate or the oil regeneration industries. In the current work the potential utilization of Class F FAs as fixation reagents for low-activity radioactive waste from the nuclear industry was examined. Aqueous solutions containing radionuclide simulants: cesium (Cs+), strontium, (Sr2+), and cerium (Ce3+, Ce4+) were used as case studies with promising results. It is suggested that the primary fixation mechanism involves the aluminate/silicate anions at the FA surface. A novel experimental fixation approach utilizing the formation of carbonates is demonstrated and a new interaction mechanism is suggested based on the electrostatic interactions of the positively charged fine precipitates with the negatively charged FA surface.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Fuel - Volume 153, 1 August 2015, Pages 437-444
نویسندگان
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