کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9465208 | 1315131 | 2005 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Optimizing the APC residue washing process to minimize the release of chloride and heavy metals
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موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
مهندسی ژئوتکنیک و زمین شناسی مهندسی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Optimizing the APC residue washing process to minimize the release of chloride and heavy metals Optimizing the APC residue washing process to minimize the release of chloride and heavy metals](/preview/png/9465208.png)
چکیده انگلیسی
An optimization of the air pollution control (APC) residue washing process was carried out to minimize the release of chloride and heavy metals. Taking into account economic parameters such as the consumption of water and reaction time, the best relation found was a S/L ratio of 1/3 during 1Â h. At a laboratory scale and according to the values obtained for chloride and heavy metals, the APC residue is classified as non-special according to Catalonian Regulations (Spain). Moreover, the pH of the solution, when MgSO4 is added during the washing process, may be controlled by the formation of gypsum. In these conditions, the concentration of heavy metals will decrease as a consequence of the formation of their respective insoluble hydroxides. Therefore, the counter-current batch washing process with the addition of small amounts of MgSO4 is revealed as an economically feasible treatment of the APC residue. This washed residue is ready to be used as secondary material or to be landfilled safely.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Waste Management - Volume 25, Issue 7, 2005, Pages 686-693
Journal: Waste Management - Volume 25, Issue 7, 2005, Pages 686-693
نویسندگان
J.M. Chimenos, A.I. Fernández, A. Cervantes, L. Miralles, M.A. Fernández, F. Espiell,