کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
151994 | 456485 | 2010 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Iron and chromium sulfates from ferrochromium alloy for tanning
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
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چکیده انگلیسی
In this study we investigated the production of soluble iron and chromium sulfate complexes from high carbon ferrochromium alloy (Fe-Cr-HC) for utilization as a tanning agent. The temperature, sulfuric acid concentration, and the reaction time between Fe-Cr-HC and sulfuric acid were selected as independent variables for iron and chromium conversion. A quadratic response surface model was adjusted using the Box-Behnken statistical experimental design technique. The results obtained by solving multi-objective optimization problem have shown about 98.6-100% Cr and 86.9-89.1% Fe conversions. Perchloric acid and ammonium sulfate additions were investigated in order to determine the system limitations. The results have showed that an increase of perchloric acid concentration decreased the quantity of soluble chromium and iron compounds, while an ammonium sulfate addition improved the conversion of chromium up to 100%.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Engineering Journal - Volume 165, Issue 1, 15 November 2010, Pages 17-25
Journal: Chemical Engineering Journal - Volume 165, Issue 1, 15 November 2010, Pages 17-25
نویسندگان
Bruno München Wenzel, Nilson Romeu Marcilio, Marcelo Godinho, Leonardo Masotti, Celso Brisolara Martins,