title: Microbial Community in a Biofilter for Removal of Low Load Nitrobenzene Waste Gas.
abstract: To improve biofilter performance, the microbial community of a biofilter must be clearly defined. In this study, the performance of a lab-scale polyurethane biofilter for treating waste gas with low loads of nitrobenzene (NB) (< 20 g m-3 h-1) was investigated when using different empty bed residence times (EBRT) (64, 55.4 and 34 s, respectively). In addition, the variations of the bacterial community in the biofilm on the longitudinal distribution of the biofilters were analysed by using Illumina MiSeq high-throughput sequencing. The results showed that NB waste gas was successfully degraded in the biofilter. High-throughput sequencing data suggested that the phylum Actinobacteria and genus Rhodococcus played important roles in the degradation of NB. The variations of the microbial community were attributed to the different intermediate degradation products of NB in each layer. The strains identified in this study were potential candidates for purifying waste gas effluents containing NB.
authors.affiliation: State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing, PR China.|Department of Applied Chemistry, Nanjing Polytechnic Institute, Nanjing, PR China.
authors.forename: Jian
authors.initials: J
authors.lastname: Zhai
authors.affiliation: State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing, PR China.
authors.forename: Zhu
authors.initials: Z
authors.lastname: Wang
authors.affiliation: State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing, PR China.
authors.forename: Peng
authors.initials: P
authors.lastname: Shi
authors.affiliation: State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing, PR China.
authors.forename: Chao
authors.initials: C
authors.lastname: Long
mesh_terms: D000393:Air Pollutants / Q000378:metabolism*; D001673:Biodegradation, Environmental; D018441:Biofilms; D009578:Nitrobenzenes / Q000378:metabolism*
chemical_list: D000393:Air Pollutants; D009578:Nitrobenzenes; C036077:nitrobenzene