title: Enhancement of styrene removal efficiency in biofilter by mixed cultures of Pseudomonas sp. SR-5.
abstract: The styrene-degrading bacterium Pseudomonas sp. SR-5 exhibited a high styrene removability in a biofilter. However, the styrene removal efficiency (RE) of SR-5 decreased with time. We carried out styrene gas removal in a biofilter inoculated with mixed cultures of SR-5 and other microorganisms to determine the possibility of obtaining an enhanced RE for a long period. The following three inocula were carried out: (i) styrene-degrading bacteria, strains 1 and 3, (ii) a benzoic acid-degrading bacterium Raoultella sp. A, and (iii) wastewater from a chemical company dealing with styrene. These biofilters with mixed SR-5 showed an enhanced RE compared with those with a single culture of SR-5. The complete styrene elimination capacities for ensuring 100% styrene removal in those mixed cultures were 151, 108 and 124 g/m(3)/h, compared with a single culture of SR-5.
authors.affiliation: Chemical Resources Laboratory, Tokyo Institute of Technology, R1-29-4259 Nagatsuta, Yokohama 226-8503, Japan.
authors.forename: Jong Hee
authors.initials: JH
authors.lastname: Jang
authors.forename: Mitsuyo
authors.initials: M
authors.lastname: Hirai
authors.forename: Makoto
authors.initials: M
authors.lastname: Shoda
mesh_terms: D019149:Bioreactors / Q000382:microbiology*; D018920:Coculture Techniques / Q000295:instrumentation* / Q000379:methods; D004867:Equipment Design; D019544:Equipment Failure Analysis; D007220:Industrial Waste / Q000517:prevention & control; D011549:Pseudomonas / Q000145:classification / Q000254:growth & development / Q000378:metabolism*; D013045:Species Specificity; D020058:Styrene / Q000302:isolation & purification* / Q000378:metabolism*; D014462:Ultrafiltration / Q000295:instrumentation* / Q000379:methods; D014871:Water Microbiology; D014874:Water Pollutants, Chemical / Q000302:isolation & purification / Q000378:metabolism
chemical_list: D007220:Industrial Waste; D014874:Water Pollutants, Chemical; D020058:Styrene