Brazilian Archives of Biology and Technology | |
Modelling the steady state and dynamic conditions of a biotrickling filter treating styrene and acetone in air | |
Andrew Mark Gerrard2  Josef Havranek2  Vratislav Novak1  Martin Halecky1  Kim Jones1  Carlos Ricardo Soccol1  Jan Paca1  | |
[1] ,University of Teesside School of Science and Technology Middlesbrough,England | |
关键词: Biotrickling filter; steady state; unsteady state; mathematical models; styrene; acetone; | |
DOI : 10.1590/S1516-89132010000500028 | |
来源: SciELO | |
【 摘 要 】
The aim of this work was the study a trickling biofilter, where water was circulated throughout the bed. In the first steady state experiment, the packing materials used were 25mm Pall rings. The airflow rate was increased gradually and the concentration of styrene in the air stream was held constant. In the second experiment, 15mm Pall rings were used. In this case, the feed contained both styrene and a small amount of acetone. The concentration of acetone and the air flow rate were kept constant, but the styrene inlet concentration was increased. The concentrations were measured at the input, and also at an intermediate and the outlet position in the biotrickling filter to determine the concentration profile along the reactor. Using the values of coefficient of determination (R²) and the coefficient of variation of the fitted constant as criteria, a zero order model with diffusional limitation was chosen as the best representation of the data. Then a further, third, set of experiments were done at unsteady state, using step changes of the inlet concentration levels of both styrene and acetone at a steady air flow-rate . Inlet and outlet concentrations were measured as a function of time and the results were adequately described using a simple first order model.
【 授权许可】
CC BY-NC
All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License
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