الگوسازی و شبیه‌سازی فرایند حذف زیستی مس در یک ستون بستر ثابت

نوع مقاله : مقاله پژوهشی

نویسندگان

1 هیات علمی دانشگاه علم و صنعت ایران

2 دانشگاه علم و صنعت

3 دانشجو دانشکده مهندسی شیمی، نفت و گاز، دانشگاه علم و صنعت ایران

چکیده

در اینتحقیق فرایند جذب زیستی فلز مس بهوسیلۀ قارچ میله­ای رزوپوساریزوس در یک بستر ثابت از پساب‌‌های صنعتی الگوسازی شدهاست. عملکرد سه ایزوترم لانگمویر، فروندلیچ و BET برای محاسبۀ شدت جذب مقایسه‌شدند. براساس نتایج الگوسازی، الگوی فرندلیچ با ضریب همبستگی 974/0 نسبت به دیگر الگو­های ارائه شده تطابق بهتری با نتایج تجربی نشانداد. بیشترین تطابقات الگوی فروندلیچ با داده‌های تجربی برابر در مقادیر 855/01/n= و 991/0K= بهدستآمد. در ادامه، اثر مؤلفه‌های الگوی انتخابشده بر میزان جذب بررسیشد که مشخصشد در یکضریب ثابت فروندلیچ، افزایش در مقدار توان الگو باعث افزایش ظرفیت جذب در دسترس برای غلظت کم املاح می­شود. همچنین ­اثر شرایط عملیاتی در ستون از قبیل بده حجمی، قطر ستون، طول ستون، غلظت اولیه و چگالی جاذب بر میزان جذب بررسیشد. بهطور کلی می­توان گقت که الگوسازی فرایندهای زیستی برای حذف فلزات یکی از ابزار مهم در شناخت رفتار این فرایندها است و با کمترین هزینه می­توان عملکرد فرایند را در شرایط مختلف عملیاتی ارزیابی‌کرد.

کلیدواژه‌ها


عنوان مقاله [English]

Modeling and Simulation of Copper Biosorption Process in a Fixed Bed Column

نویسندگان [English]

  • A. Ghaemi 1
  • A. Hemmati 2
  • P. Amani 3
1 Nuclear Science and Technology Research Institute
2 Nuclear Science and Technology Research Institute
3 Nuclear Science and Technology Research Institute
چکیده [English]

In this research, the biosorption process of copper metal from industrial wastewater by Rhizopus Arrhizus has been modeled in a fixed bed column. The performances of the three isotherms of Langmuir, Freundlich, and BET were compared to calculate the adsorption rate. Based on the modeling results, the Freundlich model with a correlation coefficient of 0.974 showed better agreement with the experimental results than the other models. The highest agreement of Freundlich model with experimental data was obtained at k=0.991 and n= 0.8551. Then, the effect of the selected model parameters on the adsorption rate was investigated, and it was found that at a constant Freundlich coefficient, an increase in the power of the model enhances the available adsorption capacity for low solute concentrations. The effects of operating conditions in the column include volume flow, column diameter, column length, initial concentration, and adsorbent density on the adsorption rate were also investigated. In general, it can be stated that the modeling of biological processes for metal removal is one of the important tools in understanding the behavior of these processes with the least cost, and also the performance of the process can be evaluated at different operating conditions.

کلیدواژه‌ها [English]

  • Biosorption
  • Copper Metal
  • Rhizopus Arrhizus
  • Isotherm model
  • Fixed Bed Column

 

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