کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
221873 464267 2016 13 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Development of Box Behnken design for treatment of terephthalic acid wastewater by electrocoagulation process: Optimization of process and analysis of sludge
ترجمه فارسی عنوان
توسعه طراحی جعبه بنکن برای تصفیه فاضلاب اسید ترفتالات توسط فرایند الکتروکواگولاسیون: بهینه سازی فرآیند و تجزیه و تحلیل لجن
کلمات کلیدی
ANOVA، تجزیه و تحلیل واریانس؛ BA، اسید بنزوئیک؛ BBD، طراحی جعبه بنکن؛ چگالی جریان؛ COD، تقاضای اکسیژن شیمیایی؛ DTA / TGA، تجزیه و تحلیل حرارتی دیفرانسیل / تجزیه گرما گرماسنجی گرما؛ FTIR، طیف سنجی مادون قرمز تبدیل فوریه؛ PA، اسید فتالیک
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
چکیده انگلیسی


• Al electrodes give higher % removal of TPA-89.75 and COD-83.88.
• ANOVA analysis results shows good adequacy of the selected model.
• Sludge exhibit carbonyl and hydroxyl group shows efficient removal of TPA.
• Fe electrodes generated sludge shows better settling properties.
• Energy consumption (57.25 kW h/kg CODremoval) was lower in case of Al electrodes.
• Operating cost ($8.59) was lower in case of Al electrodes for per kg/COD removal.

Present research work deals with the treatment of terephthalic acid (TPA) wastewater by electrocoagulation (EC) process. TPA is counted in the major toxic pollutants of purified terephthalic acid (PTA) wastewater and contributes high COD. Box Behnken Design (BBD) in Response Surface Methodology (RSM) tool of Design Expert Software (8.0.7.1, 2010, Stat-Ease Inc., Minnepolis) has been developed for this study. Effect of various operating parameters viz. pH: (7 to 11), current density (A/m2): (38.40 to 105), electrolysis time (min): (15.0 to 60.0) and NaCl dosages (g/L): (0.50 to 1.25) on percentage removal of TPA, chemical oxygen demand (COD) and energy consumption (kW h/kg CODremoved) are presented. Maximum percentage removal of TPA: 89.75, 73.86; COD: 83.88, 67.63 and minimum energy consumption (kW h/kg CODremoved): 57.25, 70.84 are found at optimum operating conditions using Al and Fe electrodes respectively. Properties of sludge were analyzed by point of zero charge, settling, XRD, SEM/EDX, FTIR and TGA/DTA. Process operating costs ($) (Al: 8.59, Fe: 9.82) are determined based on electrical energy, electrode consumption and electrode maintenance cost for per kg of COD removal at optimum operating conditions.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Environmental Chemical Engineering - Volume 4, Issue 1, March 2016, Pages 178–190
نویسندگان
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