حذف موثر رنگزای اسیدبلو 113 با استفاده از نانوکاتالیزور برپایه منیزیم اکسید در فرایند ازون‌زنی کاتالیزوری نوری

نوع مقاله : مقاله پژوهشی

نویسندگان

1 گروه شیمی کاربردی، دانشکده شیمی، دانشگاه گیلان، رشت، ایران، صندوق‌پستی: ۱۹۱۴۱- ۴۱۳۳۵

2 گروه شیمی کاربردی، دانشکده شیمی، دانشگاه گیلان، رشت، ایران، صندوق‌پستی: ۱۹۱۴۱-۴۱۳۳۵

10.30509/jcst.2024.167311.1227

چکیده

در این تحقیق، از فرایند ازون‌زنی کاتالیزوری نوری برای حذف رنگزای اسید بلو 113 از محلول رنگی استفاده شد. کاتالیزور مورد استفاده در فرایند، نانوکامپوزیت سه‌جزیی Fe2O3/MgO/MoS2 بود که برای اولین بار با روش هیدروترمال سنتز شد و سپس با روش‌های مختلف مورد شناسایی قرار گرفت. برای آنالیز و بهینه‌سازی متغیرهای فرایند از روش سطح پاسخ با طراحی آزمایش باکس- بنکن استفاده شد. مطالعات نشان داد که زمان، pH و مقدارکاتالیزور متغیرهای تأثیرگذار بر حذف ماده رنگزا بوده است. شرایط بهینه برای این متغیرها برای محلول دارای ماده رنگزا با غلظت 25 میلی‌گرم در لیتر، در pH برابر با 2.27، مقدار کاتالیزور 8.6 میلی‌گرم، شدت جریان ازون 0.2 میلی‌گرم در لیتر در ساعت، و زمان 26 دقیقه به دست آمد. در این شرایط، 99.3 درصد ماده رنگزا توسط فرایند پیشنهادی حذف شد. علاوه بر این، نانوکاتالیزور قابلیت بازیابی و پایداری بالایی (92.0  درصد) پس از هشت چرخه متوالی استفاده نشان داد. مطابق نتایج، نانوکامپوزیت سنتز شده می‌تواند در فرایند ازون‌زنی کاتالیزوری نوری برای تصفیه پساب‌های صنعتی حاوی مواد رنگزا مورد استفاده قرار گیرد.

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

Effective Removal of Acid Blue 113 Dye Using Magnesium Oxide-based Nanocatalyst in Photocatalytic Ozonation Process

نویسندگان [English]

  • Nadia Garivani 1
  • Naz Chaibakhsh 1
  • Fatemeh Bagheri 2
  • Reyhaneh Rahimpour 2
1 Department of Applied Chemistry, Faculty of Chemistry, University of Guilan, Rasht 41996-13776, Iran
2 Department of Applied Chemistry, Faculty of Chemistry, University of Guilan, Rasht 41996-13776, Iran
چکیده [English]

In this study, photocatalytic ozonation process was used to remove Acid Blue 113 dye from the dye solution. The catalyst applied in the process was the three-component nanocomposite Fe2O3/MgO/MoS2, which was synthesized by hydrothermal method for the first time and then identified by various methods. To analyze and optimize
the parameters of the photocatalytic ozonation process, response surface methodology (RSM) was employed using the Box-Benken design. The results show that time, pH, and amount of the catalyst are the parameters that influence dye removal. The optimal conditions for these variables to remove dye solution with a concentration of 25 mg/l include pH 2.27, 8.6 mg of the catalyst, ozone flow of 0.2 mg/l.h in 26 min. Under these conditions, the proposed process removed 99.3 % of the dye. In addition, the nanocatalyst showed high reusability and stability (92 %) after eight consecutive use cycles. According to the results, the synthesized nanocomposite can be used in the catalytic ozonation process to treat industrial dye-containing effluents.

کلیدواژه‌ها [English]

  • Photocatalytic ozonation Acid Blue 113 Magnesium oxide Three
  • component nanocomposite Optimization

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