title: Biological deodorization of dimethyl sulfide using different fabrics as the carriers of microorganisms.
abstract: Biological deodorization of dimethyl sulfide (DMS) was studied using nine unwoven fabrics as the carriers of microorganisms in a laboratory-scale deodorizing system. The activated carbon fabric FN-200CF-15 was the best packing material compared with other packing materials used, on the basis of removal rate. The maximum removal rate (Vm), evaluated by using Michaelis-Menten equation, was 2.28 g-S.kg-dry fab.-1.day-1 in this fabric biofilter. The critical load of DMS in this fabric biofilter was dependent on space velocity (SV), determined as 0.78 and 0.66 g-S.kg-dry fab.-1 at SV 100 and 150 h-1, respectively. Strain IM1 isolated from the carbon fabric FN-200CF-15 biofilter in modified Waksman (MW) medium successfully degraded DMS as well as hydrogen sulfide (H2S), methanethiol (MT), and dimethyl disulfide (DMDS) in batch test. The DMS removal rates (g-S.cell-1.h-1) by this strain measured in batch culture and calculated in FN-200CF-15 biofilter by the cell numbers appeared in MW medium were found almost equal, indicating that strain IM1 may be the dominant microorganism in this biofilter.
authors.affiliation: Research Laboratory of Resources Utilization, Tokyo Institute of Technology, Yokohama, Japan.
authors.forename: R S
authors.initials: RS
authors.lastname: Tiwaree
authors.forename: K S
authors.initials: KS
authors.lastname: Cho
authors.forename: M
authors.initials: M
authors.lastname: Hirai
authors.forename: M
authors.initials: M
authors.lastname: Shoda
mesh_terms: D000397:Air Pollution / Q000517:prevention & control*; D001431:Bacteriological Techniques; D002244:Carbon / Q000737:chemistry; D015169:Colony Count, Microbial; D004121:Dimethyl Sulfoxide / Q000737:chemistry*; D005374:Filtration / Q000295:instrumentation; D005740:Gases / Q000737:chemistry; D007700:Kinetics; D009812:Odorants / Q000517:prevention & control*; D013455:Sulfur / Q000737:chemistry; D013784:Textiles; D014835:Volatilization
chemical_list: D005740:Gases; D013455:Sulfur; D002244:Carbon; D004121:Dimethyl Sulfoxide