Abstract
In a search for bacteria capable of degrading styrene better than previously isolated strains, bacterium IS-3 was isolated from activated sludge and found to be most closely related to Pseudomonas sp. Styrene degradation by this strain was tested in liquid cultures and polyurethane-packed biofilters. In liquid cultures, the rate of styrene degradation by this bacterium increased from 24.93 to 76.53 μmol g-1 DCW h-1 for an initial mass range from 8.7 to 34.8 μmol. The maximum styrene elimination capacity was 580-635 g/m3·h at a space velocity (SV) of 50-200/h. The critical elimination capacities guaranteeing 95% removal of the input styrene were determined to be 635, 170, and 38 g/ m3·h, respectively, at SVs of 50, 100, and 200/h. Kinetic analysis revealed that the maximum styrene elimination velocity (Vm) for this biofilter was 1,000 g/m·h, and the saturation constant (Km) was 454 ppmv. Together, these results suggest that a polyurethane biofilter containing Pseudomonas sp. IS-3 could have potential practical applications for the effective removal of styrene gas.
Original language | English |
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Pages (from-to) | 1207-1213 |
Number of pages | 7 |
Journal | Journal of Microbiology and Biotechnology |
Volume | 15 |
Issue number | 6 |
State | Published - Dec 2005 |
Keywords
- Biofilter
- Degradation
- Elimination capacity
- Polyurethane
- Pseudomonas sp.
- Styrene