Performance of a styrene-degrading biofilter inoculated with Pseudomonas sp. SR-5.
Styrene removal was studied for 3 months in a laboratory-scale biofilter packed with a mixed packing material of peat and ceramic at a ratio of 1 to 1 on a dry-weight basis and inoculated with Pseudomonas sp. SR-5. More than 90% removal efficiency (RE) was attained at 1-140 g/m3/h styrene loads under nitrogen-source limitation. When RE decreased to 70% after 30 d with an increase in styrene load, readdition of SR-5 and washing of the filter packing material restored the RE to more than 90% by maintaining the population of SR-5 at 1-10% of the total cell number. The maximum elimination capacity (EC) by kinetic analysis was estimated to be 290 g/m3/h. High conversion of the removed styrene carbon to CO2, and significantly small production of cell mass from the removed carbon were confirmed.
Jang
Jong Hee
JH
Chemical Resources Laboratory, Tokyo Institute of Technology, R1-29-4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan.
Hirai
Mitsuyo
M
Shoda
Makoto
M
D001673:Biodegradation, Environmental; D005374:Filtration / Q000379:methods; D007220:Industrial Waste; D007700:Kinetics; D011549:Pseudomonas / Q000378:metabolism*; D020058:Styrene / Q000378:metabolism*
D007220:Industrial Waste; D020058:Styrene