ارزیابی عملکرد فرآیند الکتروفنتون در حذف رنگ حاصل از فاضلاب تولیدی در واحدهای صنعتی

نوع مقاله: مقالات پژوهشی

نویسندگان

1 گروه مهندسی بهداشت محیط،دانشکده بهداشت،دانشگاه علوم پزشکی مشهد،مشهد،ایران

2 دانشگاه علوم پزشکی مشهد - دانشکده بهداشت - گروه مهندسی بهداشت محیط و حرفه ای

3 استادیار،گروه مهندسی بهداشت محیط،دانشکده بهداشت،دانشگاه علوم پزشکی نیشابور

4 دانشکده علوم پزشکی نیشابور

چکیده

زمینه و هدف: فاضلاب تولیدی حاصل از صنایع مختلف، یک منبع آلاینده خطرناک و قابل توجه در آلودگی محیط زیست به‌شمار می­روند. مشکل عمده فاضلاب تولیدی صنایع رنگرزی، مواد رنگی غیرقابل تجزیه بیولوژیکی است، لذا مطالعه حاضر با هدف ارزیابی کارایی فرآیند الکتروفنتون در حذف رنگ از فاضلاب صنایع انجام شد.
مواد و روش‌ها: در این مطالعه تجربی که در سال 1396 انجام گرفت، نمونه‌برداری از فاضلاب بر اساس کتاب استاندارد آزمایش­های آب و فاضلاب انجام گرفت. نمونه به درون سلول الکتروشیمیایی انتقال یافته و تأثیر پارامترهای مختلف مانند میزان جریان الکتریکی، مقدار مصرفی یون­های آهن، pH و زمان واکنش در راهبری فرآیند مورد نظر بررسی گردید.
یافته‌ها: بر اساس نتایج حاصل، در شدت جریان 25 ولت برای غلظت رنگ 100 میلی‌گرم بر لیتر و شدت جریان 35 ولت برای غلظت رنگ 200 میلی‌گرم بر لیتر به بالا، در زمان 50-60 دقیقه، غلظت یون­های آهن 3/0 میلی‌گرم بر لیتر و 3=pH، حذف 8/99 درصدی رنگ به‌دست آمد.
نتیجه‌گیری: فرآیند الکتروفنتون، قادر به حذف رنگ با غلظت­های متفاوت با بازده بالا می­باشد. بر اساس نتایج حاصل، شدت جریان الکتریکی و غلظت یون­های آهن، پارامترهای مؤثر بر فرآیند الکتروفنتون در حذف رنگ هستند و پارامتر­های pH و زمان الکترولیز، تأثیر کمتری بر کارایی فرآیند الکتروفنتون در حذف رنگ حاصل از فاضلاب دارند.

کلیدواژه‌ها


عنوان مقاله [English]

Evaluation of Electro-Fenton process performance for Dye removal from industrial wastewater

نویسندگان [English]

  • Sima Zamand 1
  • hosein alidadi 2
  • Abolfazl Naimabadi 3
  • Vahid Taghavimanesh 4
1 Department of Environmental Health Engineering, School of Health, Mashhad University of Medical Science, Mashhad, Iran
2 Department of environmental health,school of health,Mashhad university of medical sciences
3 department of environmental health, Neyshabur university of medical sciences
4 Neyshabur university medical of science
چکیده [English]

Background and Aim: : Produced wastewater by various industries is a dangerous and considerable pollution resource for the environment. The presence of non-biodegradable dyes in effluents of dying industries is regarded as a major problem. The purpose of this study was to evaluate the efficiency of electro-fenton process in dye removal from the wastewater of dying industries.
Materials and methods: : In the present experimental study conducted in 2017, wastewater sampling was performed according to the Standard Methods for the Examination of Water and Wastewater. The samples were transferred to the electrochemical cell reactor and the effect of different parameters such as applied voltage, iron concentration, pH, and reaction time on dye removal efficiency were investigated.
Results: According to the results, optimum conditions of Electro-Fenton process in dye removal was determined. Accordingly, in applied voltages of 25 and 35 V in 100 and more than 200 mg/L dye concentrations, , reaction time of 50 - 60 minutes, Fe2+ concentration of 0.3 mg/L and pH of 3 the dye removal efficiency of 99.8 % was achieved.
Conclusion: The electro-fenton process is able to remove dye with different concentrations and maximum efficiency. Based on the results, the applied voltage and the concentration of Fe2+ were the parameters that are more efficient and pH along with reaction time demonstrated less impact on the efficiency of the electro-fenton process in dye removal from industrial wastewater.

کلیدواژه‌ها [English]

  • Electro-Fenton
  • dye
  • Industrial wastewater
  • dying industries
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