نوع مقاله : مقاله کامل پژوهشی

نویسندگان

1 مجتمع آموزش عالی فنی و مهندسی اسفراین، خراسان شمالی، اسفراین، ایران

2 گروه مهندسی شیمی، دانشگاه آزاد اسلامی واحد فیروزآباد، فیروزآباد، ایران

چکیده

در این مطالعه، راندمان حذف متیل اورانژ با استفاده از دو نوع فتوکاتالیست مغناطیسی حاوی اکسید روی در حضور و بدون حضور اکسید گرافن مورد بررسی قرار گرفت. هم­چنین سینتیک واکنش حذف متیل اورانژ و تاثیر پارامترهای عملیاتی از جمله زمان تابش ­دهی و کسر وزنی فتوکاتالیست­ها با استفاده از روش آماری و آزمون چند­دامنه­ای دانکن بررسی شد. نتایج حاصل شده نشان داد راندمان حذف متیل اورانژ تحت تاثیر زمان تابش­ دهی و کسر وزنی فتوکاتالیست می­باشد به طوری که با افزایش این دو پارامتر، میزان حذف متیل اورانژ نیز افزایش می­یابد. سینتیک واکنش تجزیه با استفاده از هر دو نوع فتوکاتالیست منطبق بر سینتیک واکنش شبه درجه اول می­باشد و سرعت تجزیه متیل اورانژ با استفاده از فتوکاتالیست حاوی اکسید گرافن بیشتر از فتوکاتالیست فاقد اکسید گرافن می­باشد. بررسی آماری تاثیر زمان تابش­دهی و کسر وزنی فتوکاتالیست با استفاده از آزمون چند­دامنه­ای دانکن نشان می­دهد هر دو پارامتر دارای تاثیر معنی­داری بر روی حذف متیل اورانژ می­باشند.

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

The Study of kinetic Reaction of the Photocatalytic Elimination of Methyl Orange in the presence of Magnetic Composite of Fe3O4-ZnO Based on Graphene Oxide

نویسندگان [English]

  • Sedigheh Abbasi 1
  • Farshad Farahbod 2
  • Mohammad Imani 1
  • Ali Koroushavi 1

1 Esfarayen University of Technology, Esfarayen, North khorasan, Iran

2 Department of Chemical Engineering,, Firoozabad Branch, Islamic Azad University, Firoozabad, Iran

چکیده [English]

The removal efficiency of methyl orange using two kinds of magnetic photocatalysts containing ZnO in the presence and absence of graphene oxide is investigated. Meanwhile, the kinetic of removal reaction of methyl orange, the effect of operational parameters such as irradiation time and weight fraction of photocatalysts based on statistical method and Duncan’s multiple range test are studied. The removal efficiency of methyl orange using both of the applied photocatalysts is affected by irradiation time and weight fraction of photocatalyst. So that the enhancement of these two parameters leads to the increment of removal efficiency of methyl orange. The results show that the kinetic reaction is pseudo first order. The rate of reaction using photocatalyst containing graphen oxide is higher than that of without it. The results of statistical analysis based on Duncan’s multiple range test reveals that both of the studied parameters have significant influence on the removal efficiency of methyl orange.

کلیدواژه‌ها [English]

  • Graphene oxide
  • ZnO nanoparticles
  • Kinetic of reaction
  • Removal efficiency
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