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KMID : 0545120030130010070
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Journal of Microbiology and Biotechnology
2003 Volume.13 No. 1 p.70 ~ p.76
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Benzene Biodegradation Using the Polyurethane Biofilter Immobilized with Stenotrophomonas maltophilla T3-c
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KWON, HEOCK-HOI
LEE, EUN YOUNG/CHO, KYUNG-SUK/RYU, HEE WOOK
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Abstract
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The benzene removal characteristic of the polyurethane (PU) biofilter immobilized with S. maltophilia T3-c, that could efficiently degrade benzene, was investigated. Maximum capacity to eliminate benzene was maintained at 100-110 g??m^-3??h^-1 when space velocity (SV) ranged from 100 to 300 h^-1, however, it decreased sharply to 55 g??m^-3??h-1 as SV increased to 400 h^-1. The critical elimination capacities that guaranteed 90% removal of inlet loading of the PU biofilter were determined to be 70, 30, and 15 g??m^-3??h^-1 at SV 100, 200, and 300 H^-1, respectively. Based on the result a kinetic analysis of the PU biofilter, maximum benzene elimination velocity (V_m) was 125 G??m^-3 of PU??h^-1 and saturation constant (K_m) was 0.22 g??m^-3 of benzene (65㎕??l^-1). This study suggests that the biofilter utilizing S. maltophilia T3-c and polyurethane is a very promising technology for effectively degrading benzene.
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KEYWORD
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