حذف متیلن‌بلو از محلول آبی با استفاده از نانوجاذب آهن مغناطیس اصلاح‌شده با گوانیدین

نوع مقاله: مقاله پژوهشی

نویسندگان

1 گروه مهندسی شیمی، دانشکده فنی مهندسی، واحد کرمانشاه، دانشگاه آزاد اسلامی، کرمانشاه، ایران

2 گروه مهندسی شیمی، دانشکده فنی مهندسی، واحد کرمانشاه، دانشگاه آزاد اسلامی، کرمانشاه، ای

3 گروه شیمی، دانشکده علوم پایه، واحد کرمانشاه، دانشگاه آزاد اسلامی، کرمانشاه، ایران

چکیده

هدف از این مطالعه سنتز نانوذرات مغناطیسی عامل‌دار شده با گوانیدین و بررسی توانایی رنگبری رنگ متیلن بلو از نمونه فاضلاب واقعی می‌باشد. مشخصات فیزیکی و ساختاری جاذب سنتز شده با استفاده از تکنیک‌های SEMا، TEM و FTIR بررسی شد و اثر فاکتورهای pH، غلظت جاذب و متیلن بلو، زمان تماس و دما بر‌روی آن بررسی شد. شرایط بهینه جذب رنگزا عبارتند از: pH=6، زمان تماس min 30 و دوز جاذب g/L 5/2 در دمای اتاق. داده‌های ایزوترم تعادلی جذب نشان داد که فرآیند جذب با مدل لامگمویر مطابقت داشته و از سینتیک جذب مرتبه دوم پیروی می‌کند. مطالعه حاضر نشان داد که نانوذرات مغناطیسی عامل‌دار شده با گوانیدین علاوه‌بر ویژگی‌هایی مانند جداسازی ساده و سریع، پتانسیل بالایی برای رنگبری متیلن بلو دارند. بنابراین، می‌توان آن را برای جذب و جداسازی چنین آلاینده‌هایی از محلول‌های آبی به‌کار برد.
 

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Investigation of Methylene Blue Adsorption in Water Solution Using Modified Magnetic Fe3O4 by Guanidine

نویسندگان [English]

  • Somayeh Najafi 1
  • Farhad Salimi 2
  • Changiz Karami 3
1 Department of Chemical Engineering, Kermanshah Branch, Islamic Azad University, Kermanshah, Iran
2 Department of Chemical Engineering, Kermanshah Branch, Islamic Azad University, Kermanshah, Iran
3 Department of Chemistry, Kermanshah Branch, Islamic Azad University, Kermanshah, Iran
چکیده [English]

In this study, magnetic nanoparticle supported by guanidine was synthesized, and its property was investigated in adsorption of methylene blue from wastewater samples. Physical and structural characteristics of the adsorbent were investigated by SEM, TEM, and FTIR techniques. The effect of pH, initial concentration of methylene blue and adsorbent, contact time, and temperature were investigated to determine equilibrium isotherms, and kinetics of adsorption process. The optimum conditions of adsorbent were: pH=6, contact time=30min, adsorbent dose of 2.5 g/L and room temperature. The equilibrium isotherm study showed that the adsorption process was fitted by Langmuir model and the adsorption kinetic a good compliance with pseudo second-order model. The present study showed that the magnetic nanoparticle supported by guanidine has high potential for adsorption of methylene blue, in addition to features like simple and rapid separation. Therefore, it can be used for adsorption and separation of such pollutants from aqueous solutions.
 

کلیدواژه‌ها [English]

  • Adsorption
  • Methylene Blue
  • Modified Magnetic Iron (II
  • III) Oxide by Guanidine
  • Adsorption Isotherm
  • Adsorption Kinetic

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