بررسی پارامترهای مؤثر بر حذف رنگ از پساب‌ صنایع پتروشیمی به روش فنتون و الکتروفنتون

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشکده مهندسی شیمی دانشگاه صنعتی امیرکبیر-تهران-ایران

2 دانشکده مهندسی شیمی دانشگاه امیرکبیر

3 عضو هیئت علمی دانشکده مهندسی شیمی- دانشگاه صنعتی امیرکبیر-تهران-ایران

چکیده

پساب‌های صنایع پتروشیمی یکی از خطرناک‌ترین پساب‌های موجود است که حاوی ترکیبات سمی و سخت تجزیه‌پذیر است و رهاسازی آن در طبیعت خطرات جدی زیست محیطی را به دنبال دارد. از این‌رو تصفیه آن‌ها امری ضروری است. در این تحقیق روش فنتون به عنوان یکی از روش‌های اکسیداسیون پیشرفته کارآمد برای تصفیه پساب پتروشیمی آبادان استفاده شد. بررسی تاثیر سه پارامتر pH ، غلظت H2O2 و نسبت Fe/H2O2 و تداخل آن‌ها بر بازدهی حذف رنگ از این پساب با استفاده از روش طراحی آزمایش آماری باکس بنکن و با کمک نرم افزار Design Expert انجام شد. به منظور دستیابی به بیشترین میزان حذف رنگ به عنوان یک شاخص آلایندگی، شرایط بهینه توسط نرم افزار به صورت PH=3/06، میزان اکسنده هیدروژن پراکسید (ml)8/88، نسبت مولی کاتالیست آهن به اکسنده Fe/H2O2=0/1 انتخاب شد. در این شرایط بیشترین میزان حذف رنگ 76/5 درصد پیش بینی شد که در شرایط واقعی بازدهی 72/5 درصد را نشان داد که این مقدار اختلاف با توجه به خطای آزمایشگاهی (0/004>|R2-R2adj|) قابل قبول است. همچنین به منظور افزایش بازدهی حذف، روش الکتروفنتون به‌کار برده شد. در روش الکتروفنتون در شرایط بهینه‌فرایند فنتون((ml)H2O2=8/88 و PH=3/06) و چگالی جریان 10(mA)، بیشترین بازده حذف رنگ برابر 100 درصد به دست آمد.

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

Investigation of Effective Parameters on Dye Removal from Petrochemical Industry Effluents by Fenton and Electro-Fenton Methods

نویسندگان [English]

  • Amirhosein Rajabzadeh Nobakht 1
  • Javad Toghiani 2
  • Narges Fallah 3
1 chemical eng. faculty-AUT-Tehran-Iran
2 chemical eng. faculty-AUT
3 chemical eng. faculty-AUT-Tehran-Iran
چکیده [English]

Petrochemical industry effluents are one of the most hazardous effluents available, which contain toxic and biodegradable compounds, and their release into nature carries serious environmental risks. In this way, it is necessary to purify them. In this research, the Fenton method was used as one of the efficient advanced oxidation methods for Abadan petrochemical wastewater treatment. The effect of three parameters of ,  concentration and  ratio, and their interference on the dye removal efficiency of this effluent was performed using the design method of the Box-Bonken statistical test with the help of Design Expert software. In order to achieve the maximum amount of dye removal as an indicator of pollution, the optimal conditions were Selected by the software as , the amount of oxidizing , and the molar ratio . In these conditions, the highest rate of dye removal was predicted to be 79.5%, which in real conditions showed a yield of 72.5%, which is acceptable due to laboratory error (). The electro-Fenton method was also used to increase the removal efficiency. In the electro-Fenton method, under optimal conditions of Fenton process ( and ) and current density of , the maximum dye removal efficiency of 100% was obtained.

کلیدواژه‌ها [English]

  • Fenton
  • Advanced oxidation process
  • Dye removal
  • Petrochemical effluent
  • Electro-Fenton

مراجع

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نشریه مهندسی مکانیک امیرکبیر
دوره 54، شماره 5
مرداد 1401
صفحه 947-960

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