PAHs 오염퇴적토 정화용 생물반응기

Title
PAHs 오염퇴적토 정화용 생물반응기
Alternative Title
REMEDIATION OF PAHS CONTAMINATED MARINE SEDIMENT USING FED-BATCH BIOSLURRY REACTOR
Author(s)
권개경; 정홍배; 이희순; 김상진
KIOST Author(s)
Kwon, Kae Kyoung(권개경)
Publication Year
2006-08-22
Abstract
Polycyclic aromatic hydrocarbons (PAHs) are well known as one of toxic environmental pollutants and can be eventually accumulated in marine sediments. Due to those potential hazardous effects on ecosystem, removal of PAHs from marine sediment has been great concern. In this study, we optimized the fed-batch parameters in bioslurry reactor. The effect of cyclodextrin on the degradation rate of PAHs was also considered with simultaneous measurement of the proportion of PAHs-degrading bacteria using T-RFLP method. The activity of electron transport system (ETSA) in the first batch was increased from 5.1±0.1 ug-O2/ml/hr of 1 day incubation to 27.4±0.3 ug-O2/ml/hr after 2-3 days. ETSA was highly maintained for 2 and 3 days even with the successive addition of the contaminated sediments to the bioreactor. The degradation rate of PAHs in the whole process was maintained between 81-95% regardless of inoculum size, 1/5 or 1/10. As a result, the degradation rate of PAHs could be maintained or even slightly increased when sediments were added after 2 days incubation with inoculum size higher than 10%. However, addition of cyclodextrin seems very critical. No significant degradation was observed and the inoculated bacteria were significantly reduced without cyclodextrin. The result implies that the fed-batch reactor could be applied to bioremediation of sediments contaminated by PAHs under appropriate conditions.
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/30920
Bibliographic Citation
11th International Symposium on Microbial Ecology, pp.276, 2006
Publisher
International Society of Microbial Ecology
Type
Conference
Language
English
Publisher
International Society of Microbial Ecology
Related Researcher
Research Interests

Acquisition of marine microbial bioresources,Marine microbial diversity,Application study on marine microbes,해양미생물 자원 확보,해양미생물 다양성,해양미생물 기능 활용

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