Modeling of Hexane Abatement in a Fungal Biofilter with Variable Temperature at Continuous and Intermittent Loading

Document Type : Research Article

Authors

1 Chemical Engineering Department, Amirkabir University of Technology, PO Box 15875-4413 Tehran, I.R. IRAN

2 Chemical Engineering Department, Tarbiat Modares University, P.O. Box 14115-143 Tehran, I.R. IRAN

Abstract

In recent years biofiltration has been attended as an alternative method for the treatment of polluted air stream instead of traditional processes. Although temperature is a key factor in this process, biofiltration modeling based on the temperature effect on the reaction kinetics has been rarely considered. In this contribution, a dynamic mathematical model has been presented which takes into account the dispersion in gas phase, diffusion in biofilm, temperature effect, and potential of oxygen limitation in reaction kinetic. Model was calibrated and validated by using an experimental data in which the effect of temperature, intermittent and continuous loading on the biodegradation of n-hexane vapor was investigated. Results showed that model well predicted experimental data at intermittent loading in the temperature range of 30-35°C and continuous loading in the temperature range of 35-40°C. Sensitivity analysis showed that at high inlet loads, decreasing bed temperature may change the rate limited biodegradation to the diffusion limited and a part of biofilm become inactive.

Keywords

Main Subjects

References

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