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Received September 20, 2004
Accepted April 20, 2005
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Biodegradation of toluene and dimethyl sulfide in a cocultured biofilter
In-Gyung Jung1
Il-Hyun Lee2
Suk-Jin Choung1 3
Chang Nyung Kim1 4
Yoon-Mo Koo5
Eunki Kim5
Chang-Ho Park1 3†
1Industrial Liaison Research Institute, Korea 2Department of Chemical Engineering, Korea 3Department of Chemical Engineering, Kyung Hee University, Yongin-si 449-701, Korea 4Department of Mechanical Engineering, Kyung Hee University, Yongin-si 449-701, Korea 5Department of Biological Engineering, Inha University, Incheon 402-751, Korea
chpark@khu.ac.kr
Korean Journal of Chemical Engineering, January 2006, 23(1), 34-37(4), 10.1007/BF02705689
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Abstract
Biofiltration was performed for 50 days in a perlite-packed biofilter (8 cm I.D.×105 cm height) for the simultaneous removal of toluene and dimethyl sulfide (DMS). Two strains, Rhodococcus pyridinovorans PYJ-1 and Gordonia sihwaniensis PKL-1, were cocultured in the biofilter. Removal efficiencies of toluene and DMS at an empty bed residence time (EBRT) of 3min were 80-85% and 40-45%, respectively, for an input concentration of 2.5-3.0 mg/L of toluene and 1.5-2.0 mg/L of DMS. The pH of the perlite column was maintained at 7.0-7.2, and the moisture content varied from 61% at the bottom to 51% at the top. Starting from the same initial cell concentration (2.4×106 CFU/g of wet packing) the number of R. pyridinovorans PYJ-1 was 2.5 times higher compared with that of G. sihwaniensis PKL-1 after 50 days of operation.
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References
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Gervais P, Molin P, Grajek W, Bensoussan M, Biotechnol. Bioeng., 31, 457 (1988)
Joseph SD, Marc AD, Todd SW, Biofiltration for air pollution control, Lewis Publishers, Washington D.C. (1999)
Jung IG, Lee IH, Park CH, Korean J. Biotechnol. Bioeng., 19, 143 (2004)
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Lee BY, Park SH, Lee SC, Kang M, Park CH, Choung SJ, Korean J. Chem. Eng., 20(5), 812 (2003)
Ram ST, Cho KS, Mitsuyo H, Makoto S, Appl. Biochem. Biotechnol., 32, 135 (1992)
Shuler ML, Kargi F, Bioprocess engineering, Prentice-Hall Inc., New Jersey (1992)
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Yoon IK, Kim CN, Park CH, Korean J. Chem. Eng., 69, 954 (2002)
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