microbial fuel cell-biotrickling filter system Genome sequencing
In this study, the shifts of removal efficiencies of the MFC-BTF were investigated for the purifying exhaust containing single and dual components of toluene and benzene. Interactions between benzene and toluene removal in the combined system was examined relating to both the mass transfer fraction and microbial degradation activity. Factors that influenced the mass transport of VOCs and the removal efficiency were inquired. In addition, the intermediates produced during the degradation of toluene and benzene were detected to illustrate their biodegradation pathway. Analysis of microbial diversity and extracellular polymeric substances (EPS) was performed to further elucidate the main contributor for benzene and toluene removal. The study would contribute to understanding in the mechanisms of biological degradation of multi-component VOCs in MFC-BTF system. The phylum of Bacteroidota and Chloroflexi were the main contributors to toluene and benzene degradation, respectively.