Co-Treatment with Single and Ternary Mixture Gas of Dimethyl Sulfide, Propanethiol, and Toluene by a Macrokinetic Analysis in a Biotrickling Filter Seeded with Alcaligenes sp. SY1 and Pseudomonas Putida S1

The biotrickling filter (BTF) treatment is an effective way of dealing with air pollution caused by volatile organic compounds (VOCs). However, this approach is typically used for single VOCs treatment but not for the mixtures of VOC and volatile organic sulfur compounds (VOSCs), even if they are often encountered in industrial applications. Therefore, we investigated the performance of BTF for single and ternary mixture gas of dimethyl sulfide (DMS), propanethiol, and toluene, respectively. Results showed that the co-treatment enhanced the removal efficiency of toluene, but not of dimethyl sulfide or propanethiol. Maximum removal rates (r(max)) of DMS, propanethiol and toluene were calculated to be 256.41 g center dot m(-3)center dot h(-1), 204.08 g center dot m(-3)center dot h(-1) and 90.91 g center dot m(-3)center dot h(-1), respectively. For a gas mixture of these three constituents, r(max) was measured to be 114.94 g center dot m(-3)center dot h(-1), 104.17 g center dot m(-3)center dot h(-1) and 99.01 g center dot m(-3)center dot h(-1), separately. Illumina MiSeq sequencing analysis further indicated that Proteobacteria and Bacteroidetes were the major bacterial groups in BTF packing materials. A shift of bacterial community structure was observed during the biodegradation process.