کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6309158 | 1618864 | 2014 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Optimisation of magnetic separation: A case study for soil washing at a heavy metals polluted site
ترجمه فارسی عنوان
بهینه سازی جداسازی مغناطیسی: مطالعه موردی برای شستشوی خاک در سایت آلوده به فلزات سنگین
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کلمات کلیدی
جداسازی مغناطیسی، شستشو خاک، آلودگی خاک، پردازش مواد معدنی،
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم محیط زیست
شیمی زیست محیطی
چکیده انگلیسی
Sandy loam soil polluted with heavy metals (As, Cu, Pb and Zn) from an ancient Mediterranean Pb mining and metallurgy site was treated by means of wet high-intensity magnetic separation to remove some of the pollutants therein. The treated fractions were chemically analysed and then subjected to magnetic characterisation, which determined the high-field specific (mass), magnetic susceptibility (κ) and the specific (mass) saturation magnetisation (ÏS), through isothermal remanent magnetisation (IRM) curves. From the specific values of κ and ÏS, a new expression to assess the performance of the magnetic separation operation was formulated and verified by comparison with the results obtained by traditional chemical analysis. The magnetic study provided valuable information for the exhaustive explanation of the operation, and the deduced mathematical expression was found to be appropriate to estimate the performance of the separation operation. From these results we determined that magnetic soil washing was effective for the treatment of the contaminated soil, concentrating the majority of the heavy metals and peaking its separation capacity at 60% of the maximum output voltage.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemosphere - Volume 107, July 2014, Pages 290-296
Journal: Chemosphere - Volume 107, July 2014, Pages 290-296
نویسندگان
C. Sierra, D. MartÃnez-Blanco, Jesús A. Blanco, J.R. Gallego,