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Chen Z.,Guangdong Institute of Microbiology | Chen Z.,Guangdong University of Technology | Chen Z.,State Key Laboratory of Applied Microbiology | Chen Z.,Provincial Key Laboratory of Microbial Culture Collection and Application | And 14 more authors.
Chinese Journal of Environmental Engineering | Year: 2013

To evaluate the performance of biofiltration on removal of valatile organic compound (VOC) in waste gases from a paint manufacture plant, a pilot-scale biotrickling filter (BTF) with intermittent running model was designed, and was inoculated with a microbial consortium. The changes of the bacterial community structure of the BTF were also analyzed by polymerase chain reaction (PCR)-denaturing gradient gel electrophoresis (DGGE) technique. The major pollutants in waste gases were identified to be toluene, ethylbenyene and mixed xylenes (m, p, and o-xylene). The maximun removal efficiencies (REmax) for above pollutants obtained by BTF were 88.8%, 83.7%, and 86.3%, respectively. DGGE analysis indicated that the relative abundances of dominant bacteria did not increase with operating times (F, p > 0.05). The bacterial diversity under steady operating phase was significantly lower than that of the start-up phase (F, p < 0.05). The bacterial community of the bottom packing in BTF exhibited the higher diversity and variance than those in the upper packing. The increase of nutrient concentration from two times to four times has no significant influence on the bacterial community structure.

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