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-Skg-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-Skg-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-1h-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.
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Tiwaree, R.S., Cho, Ks., Hirai, M. et al. Biological deodorization of dimethyl sulfide using different fabrics as the carriers of microorganisms. Appl Biochem Biotechnol 32, 135–148 (1992). https://doi.org/10.1007/BF02922154
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DOI: https://doi.org/10.1007/BF02922154