کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5754502 | 1620885 | 2017 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Vitrification of urban soil contamination by hexavalent chromium
ترجمه فارسی عنوان
فرسایش آلودگی خاک شهری با کروم شش ظرفیتی
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کلمات کلیدی
اصلاح خاک، تبخیر کردن، کروم شش ظرفیتی، مکزیک،
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
زمین شناسی اقتصادی
چکیده انگلیسی
This research describes the characteristics, formation mechanisms, and leaching of Cr6Â + wastes that are contaminating a Mexican urban soil. By means of a vitrification process, a method has been proposed that transforms Cr6Â + to Cr3Â + and achieves effective immobilization of this highly toxic industrial waste affecting an urban area. By various physicochemical and microstructure characterization techniques, such as XRD, DTA, and SEM/EDS, carrying out complete characterization of these new materials was possible. The final vitrified or glassy products of silicate composition lead to a glass ceramic material that is environmentally very stable, showing high chemical and mechanical stability where all Cr6Â + was reduced to Cr3Â + in the residual glass network, as well as other chromium oxidation states confined in the crystalline phases formed in the final glass-ceramic. The leaching tests on samples stabilized by vitrification have shown that the release of ions from the structure of these new materials was negligible, yielding values <Â 0.5Â mg/l with respect to current international and domestic environmental regulations. The final glass-ceramics obtained by vitrification and controlled crystallization showed adequate mechanical resistance properties.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Geochemical Exploration - Volume 174, March 2017, Pages 132-139
Journal: Journal of Geochemical Exploration - Volume 174, March 2017, Pages 132-139
نویسندگان
S. Ballesteros, J.Ma. Rincón, B. Rincón-Mora, M.M. Jordán,