Macro-kinetic investigation on phenol uptake from air by biofiltration: Influence of superficial gas flow rate and inlet pollutant concentration
✍ Scribed by M. Zilli; B. Fabiano; A. Ferraiolo; A. Converti
- Publisher
- John Wiley and Sons
- Year
- 2000
- Tongue
- English
- Weight
- 703 KB
- Volume
- 49
- Category
- Article
- ISSN
- 0006-3592
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✦ Synopsis
The macro-kinetic behavior of phenol removal from a synthetic exhaust gas was investigated theoretically as well as experimentally by means of two identical continuously operating laboratory-scale biological filter bed columns. A mixture of peat and glass beads was used as filter material. After sterilization it was inoculated with a pure strain of Pseudornonas putida, as employed in previous experimental studies. To determine the influence of the superficial gas flow rate on biofilter performance and to evaluate the phenol concentration profiles along the column, two series of continuous tests were carried out varying either the inlet phenol concentration, up to 1650 m g . m-3, or the superficial gas flow rate, from 30 t o 460 m 3 . m-' . h-'. The elimination capacity of the biofilter is proved by a maximum volumetric phenol removal rate of 0.73 kg . m--3 . h-'. The experimental results are consistent with a biofilm model incorporating firstorder substrate elimination kinetics. The model may be considered a useful tool in scaling-up a biofiltration sys- tem. Furthermore, the deodorization capacity of the biofilter was investigated, at inlet phenol concentrations up to 280 mg . m-3 and superficial gas flow rates ranging from 30 to 92 m3 ' m-'. h-'. The deodorization of the gas was achieved at a maximum inlet phenol concentration of about 255 m g . m-3, operating at a superficial gas flow rate of 30 m 3 . m-' . h-'. 0