کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
222241 | 464271 | 2013 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Reusing chelating agents to wash metal-contaminated soils
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
We studied a chemical treatment in order to reuse aqueous solutions of chelating agents for trace-metals extraction from a contaminated soil. FeS, air-sparging and Ca3(PO4)2 were successively used to precipitate Cu, Ni and Pb from chelates in soil extracts and recover polyaminocarboxylates in their Ca-form. The results of batch experiments showed that the reused extracting solutions kept their high extraction efficiency after 3-runs. Chelant and solution losses were stable on each run and ranged from 10 to 20%. The low solubility and the stability of FeS in mild acidic conditions make it a promising reagent for metal precipitation and chelant recovery in soil-washing.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Environmental Chemical Engineering - Volume 1, Issue 3, September 2013, Pages 448–452
Journal: Journal of Environmental Chemical Engineering - Volume 1, Issue 3, September 2013, Pages 448–452
نویسندگان
Anthony Efligenir, Mahmoud Ahmed Mohamed, Patrick Fievet, Nicolas Fatin-Rouge,