Abstract
Toluene and acetone mixtures are commonly encountered from the manufacture of semi-conductor or opto-electronic apparatus. This study attempts to employ a trickle-bed air biofilter (TBAB) for treating toluene and acetone mixtures under different gas flow rates and influent concentrations. In the pseudo-steady-states, the elimination capacities of toluene and acetone increased but the removal efficiencies decreased with the increase of influent carbon loading. The removal efficiencies of toluene were higher than those of acetone, indicating that toluene is a preferred substrate in the mixtures. Greater than 90% removal efficiencies were achieved with influent carbon loadings of toluene and acetone below 125 and 15 g/m3 h, respectively. The TBAB appears efficient for controlling toluene and acetone mixture with medium toluene and low acetone loadings. Applicable operating conditions of TBAB for treating mixed toluene and acetone emission are suggested.
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