Iranian Journal of Chemical Engineering (IJChE)
Scientific Journal

Mathematical Modeling and Parameters Optimization of the Degradation of Acrylonitrile in Biofilters

Document Type : Regular Article

Authors

Hajar seyfi 1
Sirous shafiei 2
Reza Dehghanzadeh 3
Parya Amirabedi 4

1 Faculty of Chemical Engineering, Sahand University of Technology, Sahand New Town, Tabriz, Iran

2 Sahand University of Technology

3 Health and Environment Research Center, Tabriz University of Medical Sciences, Tabriz, Iran

4 Department of Chemical Engineering, Behbahan Khatam Alanbia University of Technology, Behbahan, Iran

https://doi.org/10.22034/ijche.2022.306304.1409
Abstract
The removal of Acrylonitrile (AN) from waste gas streams using biological methods, due to their better performance, has recently gained more attraction. The purpose of this research is modeling the AN removal by a bio-filter. The validation of the model is done by using the experimental data of a bench-scale bio-filter bed column including yard waste compost and shredded hard plastics and thickened municipal activated sludge. In this work the kinetics of the biodegradation of Acrylonitrile is first investigated. Then equations of the biofilm and air are obtained at a steady state and constant temperature. The unknown parameters of the model are determined by the least square optimization method along with solving the model equations using MATLAB. For inlet concentrations less than 1 g/m3 the model results show reasonable similarities to the experimental data. The effect of various parameters on the bio-filter performance is evaluated. The Peclet number, biofilm thickness and biomass concentration are the most important parameters. The proposed model can be useful for design purposes.

Keywords

Acrylonitrile
Bio-filtration
Modelling
Optimization
Waste Gas

Subjects

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Iranian Journal of Chemical Engineering (IJChE)
Volume 18, Issue 3
Summer 2021
Pages 3-15

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