کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4980933 1367844 2016 27 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Optimization of Fenton process using response surface methodology and analytic hierarchy process for landfill leachate treatment
ترجمه فارسی عنوان
بهینه سازی فرآیند فنتون با استفاده از روش سطح پاسخ و روند سلسله مراتبی تحلیلی برای درمان زباله های زباله
کلمات کلیدی
درمان شیرابه، فرآیند فنتون، روش سطح پاسخ، روند سلسله مراتب تحلیلی، استفاده مجدد از لجن آهن، اکسیداسیون پیشرفته
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی بهداشت و امنیت شیمی
چکیده انگلیسی
Typically, to treat landfill leachate, biological techniques alone are not sufficient. In this study, Fenton process was found to be effective as a pretreatment method. Analytic hierarchy process (AHP) was used to select the favorable catalyst between FeSO4 and FeCl2 when three criteria, namely, (i) COD removal, (ii) sludge to iron ratio, and (iii) risk were considered. Meanwhile, response surface methodology was applied to model and optimize three target responses, (i) COD removal, (ii) sludge to iron ratio, and (iii) organic removal to sludge ratio. The effective variables included pH, [H2O2]/[Fe2+], Fe2+ dosage and reaction time. In addition, to minimize the danger, generated sludge was reused in the Fenton process. According to AHP sensitivity analysis results, priority percentage for FeCl2 and FeSO4 were 64% and 36%, respectively. Additionally, according to the statistical analysis, all suggested models were adequate (with R2 of 0.9171-0.9617). The optimum condition was found to be pH = 6, [H2O2]/[Fe2+] = 20 mole ratio, [Fe2+] = 170 mM, and reaction time = 105 min. Results showed that [H2O2]/[Fe2+] and [Fe2+] are significant for COD removal while pH and [H2O2]/[Fe2+] were important factors for sludge to iron ratio (SIR) and organic removal to sludge ratio (ORSR), respectively. Meanwhile, when iron sludge was reused as catalyst, the results were acceptable even after five times regeneration.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Process Safety and Environmental Protection - Volume 104, Part A, November 2016, Pages 150-160
نویسندگان
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