بررسی و مقایسه حذف رنگزایAcid Red 37 با فرایندهای الکتروفنتون و الکتروکواگولاسیون

نوع مقاله : علمی - پژوهشی

نویسندگان

1 گروه معدن و محیط زیست، جهاد دانشگاهی واحد صنعتی امیرکبیر، تهران، ایران

2 گروه تکنولوژی نساجی، جهاد دانشگاهی واحد صنعتی امیرکبیر، تهران، ایران

3 دانشگاه آزاد اسلامی، واحد علوم و تحقیقات، گروه مهندسی نساجی، تهران، ایران.

چکیده

فاضلاب‌های رنگی صنایع نساجی به‌ویژه ترکیبات آزو معمولاً حاوی مواد سمی و پایدار در محیط‌زیست هستند. بنابراین بررسی کارایی روش‌های متعدد در حذف آن‌ها ضروری است. ترکیب رنگی Acid red 37 از نظر ساختار در گروه رنگ‌های منو آزو قرار دارد که در حال حاضر در صنایع نساجی کاربرد وسیعی یافته است. هدف از این تحقیق بهینه‌سازی عوامل مؤثر و مقایسه روش‌های الکتروفنتون و الکتروکواگولاسیون در حذف Acid Red 37 است. در این تحقیق فاضلاب مورد آزمایش از نوع سنتزی و رنگ Acid Red 37 تهیه و در مقیاس پایلوت انجام شد. پارامترهای مؤثر مانند غلظت، pH، دانسیته جریان الکتریکی و دما بر کارایی هر دو فرایند مورد بررسی قرار گرفت و درنهایت مقادیر بهینه هریک از پارامترها و میزان انرژی مصرفی در راندمان 90 درصد تعیین شد. درنهایت جهت بررسی تجزیه آلاینده و ترکیبات تولیدی، آنالیز GC-Mass صورت گرفت. شرایط بهینه جهت حذف آلاینده در روش الکتروفنتون شامل 3= pH، مدت زمان واکنش min160، دانسیته جریان الکتریکی معادل mA/cm230 در غلظت mg/L 50 با میزان انرژی مصرفی KWh/Kg Dye removal 8/142 بود. در روش الکتروکواگولاسیون 7pH = ، مدت زمان واکنش min120، دانسیته جریان الکتریکی معادل mA/cm230 در غلظت mg/L 150 با میزان انرژی مصرفی KWh/Kg Dye removal 2/130 بود. نتایج حاصل نشان داد که هر دو روش قابلیت حذف Acid red 37 را دارند اما روش الکتروکواگولاسیون نسبت به الکتروفنتون راندمان بالاتری دارد و می‌تواند به‌عنوان گزینه برتر معرفی شود.

کلیدواژه‌ها


عنوان مقاله [English]

Investigating and comparing removal of Acid Red 37 with electrofenton and electrocoagulation processes

نویسندگان [English]

  • Mina Rezaei 1
  • Farokh Hosseini Shekarabi 2
  • Mehdi Varsei 3
  • Abdoullah Samiee Bayragh 1
1 Department of Mining and Environment, Iranian Academic Center for Education, Culture and Research (ACECR), Branch of Amirkabir, Tehran, Iran
2 Department of Textile Technology, Iranian Academic Center for Education, Culture and Research (ACECR), Branch of Amirkabir, Tehran, Iran
3 Department of Textile Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran
چکیده [English]

wastewater of textile industry, especially azo compounds often are contain toxic materials and persistent in the environmental. Therefore, it is necessary to evaluate performance various methods for the removal. Acid red 37 combinations is single structure in the azo dyes which have already been widely used in the textile industry. Purpose this study Optimization of effective factors and Investigation performance electrofenton and electrocoagulation method at synthetic wastewater for Acid Red 37 dye removal from aqueous. This study, synthetic wastewater was formation from Acid Red 37 dye and pilot Scale was implemented. In this study was investigated concentration, pH, electrical density and temperature parameters. Ultimately was determine optimum conditions. was determine Amount of consumption energy at 90 percent efficiency. To investigate degradation of pollutant was GC-Mass. results was show both of methods was ability removal of Acid Red 37. But electrocoagulation was beter than electro fenton. Respectively, Optimum conditions to removal electro fenton and electrocoagulation were pH=3, time=120 min, density- 30 mA.cm2, concentration=50 mg/L, consumption energy 142.8 KWh/Kg Dye and pH=7 time=120 min, density- 30 mA.cm2, concentration=150 mg/L, consumption energy 130.2 KWh/Kg Dye. the results was show electrocoagulation beter than electrofenton and high ability for removal Acid Red 37.

کلیدواژه‌ها [English]

  • Textile
  • Acid Red 37
  • Electrofenton
  • Electrocoagulation
  • GC-Mass
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