مطالعه آزمایشگاهی و مدل‌سازی ریاضی جذب 1- بوتانول برروی کربن فعال

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشکده مهندسی شیمی و مواد، دانشگاه صنعتی شاهرود، ایران

2 گروه مهندسی شیمی، دانشکده فنی و مهندسی، دانشگاه گلستان، ایران

چکیده

در این مطالعه جذب تعادلی و سینتیکی 1- بوتانول برروی جاذب کربن فعال مورد مطالعه قرارگرفته است. ایزوترم‌های لانگمویر، فرندلیچ و تاث برروی داده‌های تعادلی برازش شده است. برای مدل‌سازی سینتیک جذب از مدل سینتیکی شبه درجه دوم و مدل نفوذ بین‌ذره‌ای استفاده‌شده است. نتایج به‌دست‌آمده نشان داد که جذب 1- بوتانول برروی کربن فعال با ایزوترم فرندلیچ متوسط خطای نسبی 3/6% و مدل ایزوترم تاث خطای نسبی 9/5% را پیش‌بینی می‌کند. مدل سینتیکی شبه درجه دوم به‌خوبی با داده‌های سینتیکی آزمایشگاهی برازش می‌شود. با استفاده از مدل نفوذ بین‌ذره‌ای، نشان داده شد که نفوذ بین‌ذره‌ای به‌تنهایی توانایی پیش‌بینی سینتیک جذب را نداشته و در فرآیند جذب 1- بوتانول بیش از یک مرحله وجود دارد. همچنین، مقایسه نتایج این کار با کارهای مشابه نشان داد که جاذب کربن فعال مورد استفاده در این مطالعه تقریباً دارای دو برابر ظرفیت جذب جاذب زئولیتی مورد استفاده در مراجع دیگر را دارد.
 

کلیدواژه‌ها


عنوان مقاله [English]

Laboratory Study and Mathematical Modeling of 1-butanol Adsorption on Activated Carbon

نویسندگان [English]

  • Mashallah Rezakazemi 1
  • Nasibeh Hajilary 2
1 Faculty of Chemical and Materials Engineering, Shahrood University of Technology, Iran
2 Department of Chemical Engineering, Faculty of Engineering, Golestan University, Iran
چکیده [English]

In this study, the equilibrium and kinetic absorption of 1-butanol on activated carbon adsorbent has been studied. Langmuir, Freundlich, and Toth isotherms are fitted on equilibrium data. A quasi-quadratic kinetic model and bifurcation penetration model have been used to model the absorption kinetics. The results have shown that the absorption of 1-butanol on active carbon is predicted by the Freundlich and Toth isotherm models with AARD 6.3% and 5.9% respectively. The pseudo-second kinetic model is well adjusted to experimental kinetic data. Using the biodegradation diffusion model, it has been shown that the intrusive penetration alone cannot predict the kinetics of adsorption, and there is more than one stage in the 1-butanol absorption process. Also, the results of the samilar work showed that the active carbon adsorbent used in this study was two times more absorbent than the zeolite adsorbent used in the references.
 

کلیدواژه‌ها [English]

  • 1-butanol
  • Adsorption
  • pseudo-second-order kinetics
  • Adsorption Isotherm
  • Frendlich
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