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Removal of benzene and toluene in polyurethane biofilter immobilized with Rhodococcus sp. EH831 under transient loading

Title
Removal of benzene and toluene in polyurethane biofilter immobilized with Rhodococcus sp. EH831 under transient loading
Authors
Lee E.-H.Ryu H.W.Cho K.-S.
Ewha Authors
조경숙이은희
SCOPUS Author ID
조경숙scopus; 이은희scopusscopus
Issue Date
2009
Journal Title
Bioresource Technology
ISSN
0960-8524JCR Link
Citation
vol. 100, no. 23, pp. 5656 - 5663
Indexed
SCI; SCIE; SCOPUS WOS scopus
Abstract
The performance of a polyurethane (PU) biofilter inoculated with Rhodococcus sp. EH831 was evaluated under different transient loading conditions, such as shutdown, intermittent and fluctuating loading. A mixture of benzene and toluene vapors was employed as model pollutants. When the biofilter was restarted after a 2 week-shutdown, during which neither clean air nor water was supplied, the benzene and toluene removal capacities were rapidly restored after a re-adaptation period of only 1 day. A comparison of the removal capacity under continuous and intermittent loading revealed that constant and periodic loading (8 h on/16 h off per day) and a 2 day-shutdown did not significantly influence the biofilter performance, although the removals of benzene and toluene were relatively unstable and lower under intermittent loading during the initial week. The result of quantitative real-time PCR showed that Rhodococcus sp. EH831 could be maintained during transient loading periods (10 10-10 11 CFU/g-dry PU) irrespective of the different operating conditions. © 2009 Elsevier Ltd. All rights reserved.
DOI
10.1016/j.biortech.2009.06.036
Appears in Collections:
엘텍공과대학 > 환경공학전공 > Journal papers
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