بررسی کارایی روش فنتون/اولتراسونیک در حذف رنگ راکتیوقرمز 2 از محلول‌های آبی

نوع مقاله: مقاله پژوهشی

نویسندگان

1 استاد گروه مهندسی بهداشت محیط، دانشکده بهداشت، عضو مرکز تحقیقات توسعه اجتماعی و ارتقاء سلامت، دانشگاه علوم پزشکی کرمانشاه

2 دانش‌آموخته کارشناسی ارشد بهداشت محیط، دانشکده بهداشت، دانشگاه علوم پزشکی کرمانشاه

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

4 دانشیار گروه آمار زیستی و اپیدمیولوژی، دانشکده بهداشت، دانشگاه علوم پزشکی کرمانشاه

چکیده

رنگ‌های موجود در پساب صنایع رنگرزی و نساجی به‌دلیل سمیت و سرطانزایی از جمله خطرناک‌ترین منابع آلوده‌کننده محیط‌زیست به‌شمار می‌آیند. یکی از روش‌های مؤثر در حذف رنگ موجود در پساب صنایع اکسیداسیون به‌وسیله فرایند فنتون/ اولتراسونیک به‌دلیل کارایی بالا در حذف رنگ است. هدف از این تحقیق حذف رنگ راکتیو قرمز 2 به وسیله فرایند فنتون/اولتراسونیک و بررسی عوامل مؤثر بر آن بود. این مطالعه از نوع تجربی بود که در مقیاس آزمایشگاهی بر روی رنگ راکتیو قرمز 2 انجام شد. سپس تأثیر pH،H2O2 ،  Fe2+ بر کارایی حذف رنگ راکتیو قرمز 2 مورد ارزیابی قرار گرفت. بعد از پیدا کردن نسبت‌های بهینه اثر دما، سرعت اختلاط و غلظت‌های متفاوت رنگ بر کارایی فرایند فنتون/ اولتراسونیک سنجیده شد. در این مطالعه از دستگاه اولتراسونیک با فرکانس 20 کیلوهرتز و قدرت 100وات استفاده شد.مقدار پارامترهای بهینه برای فرایند فنتون/اولتراسونیک به‌صورتpH  برابر3 و غلظت پراکسید هیدروژن و یون فرو به‌ترتیب 2 و 2/0میلی‌مول در مدت زمان 45 دقیقه بود. به‌طوری که در نسبت بهینه پراکسید هیدروژن به یون فرو برابر 10، راندمان حذف 91/98 درصد حاصل شد. نتیجه بررسی نشان داد که فرایند فنتون/اولتراسونیک کارایی بالایی در حذف رنگ راکتیو قرمز 2 از محلول‌های آبی دارد.

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Investigation of Efficiency on Reactive Red 2 Dye Decolorization by Fenton/Ultrasonic Process

نویسندگان [English]

  • Ali Almasi 1
  • younes yousefi 2
  • Mohammad Soltanian 3
  • Amirhossein Hashemian 4
  • Alireza Mousavi 3
1 Prof. of Environmental Eng., Social Development and Health Promotion Research Center, Kermanshah University of Medical Sciences, Kermanshah
2 MSc Graduate of Envioronmental Health Eng., Kermanshah University of Medical Sciences, Kermanshah
3 Assist. Prof. of Environmental Health Eng., Kermanshah University of Medical Sciences, Kermanshah
4 Assoc. Prof. of Biostatistics, Kermanshah University of Medical Sceinces, Kermanshah
چکیده [English]

The colors present in the effluent from dyeing and textile plants are one of the most dangerous sources of environmental pollution due to their toxicity and carcinogenesis. Dye removal is, therefore, necessary to prevent their discharge into the environment. A number of methods are available for dye removal from industrial effluents, among which Fenton/Ultrasonic oxidation process is an effective one due to its high efficiency in color removal. The objective of this pilot-scale experimental study was to investigate the operational parameters involved in the removal of Reactive Red 2 dye (RR2) using the Fenton/Ultrasonic process and its efficiency. Theeffects of pH, H2O2, and Fe2+ were evaluated using an ultrasonic reactor at 40 KHz with a power of 100W. Once the parameters had been optimized, the effects of temperature, mixing speed, and different dye concentrations on the Fenton/Ultrasonic process efficiency were measured. The optimal parameters of pH, hydrogen peroxide, and ferrous ion concentration in the were determined to be 3, 2, and 0.2 mmole, respectively, in 45 minutes so that a removal efficiency of 98.91% was obtained for an optimum hydrogen peroxide to ferrous ion ratio of 10. The results indicated that the Fenton process has a good performance in the removal of Reactive Red 2.

کلیدواژه‌ها [English]

  • Advanced oxidation
  • Fenton / Ultrasonic Process
  • Reactive Red 2 Dye

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