Abstract
Pseudomonas sp. SR-5 was isolated as a styrene-degrading bacterium. In liquid culture containing 1% (v/v) styrene, more than 90% styrene was degraded in 53 h and the doubling time of SR-5 was 2 h. The removal of styrene gas was investigated in biofilters for 31 days using an organic packing material of peat and an inorganic packing material of ceramic inoculated with SR-5. The maximum-styrene-elimination capacities for peat and ceramic packing materials were 236 and 81 g m−3 h−1, respectively. The percentage of styrene converted to low molecular weight compounds including CO2 in the peat and ceramic biofilters during a 10-day operation were estimated to be 90.4 and 36.7%, respectively. As the pressure drop in the peat bioflter at the end of experiment was significantly higher than that in ceramic biofilter, a biofilter using a mixture of peat and ceramic was tested. We determined that the maximum elimination capacity was 170 g m−3 h−1 and the production of low molecular weight compounds was 95% at a low pressure drop for this mixed packing material filter.
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Jang, J.H., Hirai, M. & Shoda, M. Styrene degradation by Pseudomonas sp. SR-5 in biofilters with organic and inorganic packing materials. Appl Microbiol Biotechnol 65, 349–355 (2004). https://doi.org/10.1007/s00253-004-1628-0
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DOI: https://doi.org/10.1007/s00253-004-1628-0