Microbial Degradation Pathways of Acrylic Paint Thinner Gas in Biotrickling Filter and Comparison of Kinetic Models Under Different Gas Concentrations

In this study, the effect of inlet concentration pollutants, empty bed residence time (EBRT) and liquid recycling velocity on performance BTF was explored. The results showed best operating characteristics biotrickling filter for study were at an 500 mg/m3�Cthe EBRT 300s 25.46 m h-1. At condition, total removal efficiency pollutants can reach more than 90%. Among them, toluene ethylbenzene above 95%, xylene (m-xylene, o-xylene) could 70%, corresponding to elimination capacities (ECs) 3.02 �} 0.33 g m-3 h-1, 1.81 0.2 0.60 0.07 Through fatty acid identification system 16S rDNA identification, it be found that four dominant bacteria (Bacillus cereus, Bacillus subtilis, Acinetobacter calcoaceticus, Belem Bacillus) had a significant acrylic paint thinner. According detection organic compounds by gas chromatography enzymes produced bacteria, pathways microorganisms degrade inferred. absorption-biofilm theory adsorption-biofilm used simulate verify degradation process exhaust different concentrations respectively.