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Effect of empty bed residence time on biotrickling filter performance: case study—triethylamine
Mirmohammadi, M.; Bayat, R.; Shirazi, H. Keshavarzi & Sotoudeheian, S.
Abstract
In this study, a laboratory-scale biotrickling filter
(BTF) is used to remove Triethylamine (TEA) from gaseous
wastes. The BTF is made of stainless steel with a height of
210 cm and an internal diameter of 21 cm packed with lava
rocks. TEA elimination pattern was evaluated by changing
empty bed residence times (EBRTs). The maximum elimination
capacity (EC) has been determined to be 87 g/m3/h. At
all EBRTs 52, 31, 20, and 10 s, contaminant transferring from
gas phase to liquid was more than the EC. Also, the removal
efficiencywas 100% for amass loading of 100 g/m3/h.While
the liquid recirculation velocity of 3.466 m3/m2/h was maintained,
the flow rate was adjusted to 60, 100, 156, and 312 L/
min. The results show that due to the high solubility of TEAin
water for all the EBRTs, TEA can be solved in the circulated
liquid and then be degraded gradually by microorganisms.
Therefore, the least EBRT of 10 s is more appropriate.
Keywords
Air pollution; Biotrickling filter; Empty bed residence time (EBRT); Triethylamine
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