کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8102470 1522129 2016 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Red ceramics enhancement by hazardous laundry water cleaning sludge
ترجمه فارسی عنوان
تقویت سرامیک سرخ توسط لجن تمیز کردن آب شستشوی خطرناک
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی انرژی های تجدید پذیر، توسعه پایدار و محیط زیست
چکیده انگلیسی
The purposes of the research were the next: to develop eco-friendly ceramics that include and immobilize hazardous laundry sludge after cleaning of extremely polluted industrial uniforms with high contents of As, Ba, Cd, Pb, Cr, Hg, Cu, Zn and grease, oil, resin, tar, paints, organic volatile compounds, etc.; to improve the mechanical properties of red ceramic, using laundry sludge; to demonstrate a possibility of natural raw materials extraction decrease, partially replacing them with laundry sludge. This sludge was introduced in the traditional clay-sand mix in the amount of 0, 3, 5, 7, 10, 15 and 20 wt. %. After sintering of these composites at temperatures 1000°, 1050°, 1100°, 1150 °C the maximum values of flexural strength resistance of the ceramics was 15.6 MPa, values of linear shrinkage ranged from 4.5 to 14.1%, water absorption values - from 13.0 to 20.3%, and density values ranged from 1.65 to 1.83 g/cm3. All these characteristics of the mechanical properties of the developed materials significantly exceed the properties of ceramics from traditional clay-sand mixes without laundry sludge. The leaching and solubility values of the heavy metals immobilized within these ceramics are hundreds of times lower than threshold levels set by the national standards of Brazil. This study showed that industrial laundry sludge can be safely used as additive to ceramics in proportions of 10-20% wt. %, enhancing the mechanical properties of the materials and constituting an ecological way to manage these wastes.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Cleaner Production - Volume 120, 1 May 2016, Pages 157-163
نویسندگان
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