해양퇴적토에 오염된 고분자 PAHs의 부내력 증진을 위한 UV와 생물분해의 동시적용

Title
해양퇴적토에 오염된 고분자 PAHs의 부내력 증진을 위한 UV와 생물분해의 동시적용
Alternative Title
Combinational treatment of UV-C and PAHs degrading bacteria for the remediation of sedimen contaminated with PAHs
Author(s)
정홍배; 권개경; 김상진
KIOST Author(s)
Kwon, Kae Kyoung(권개경)
Publication Year
2004-11-25
Abstract
To develop the effective and environment friendly remediation method of PAHs contaminated in marine sediment, the degradation rate of BaP and the Microtox toxicity of BaP degrading intermediates were evaluated by the combinatorial treatment of UV-C and BaP degrading bacteria, Novosphingobium pentaromativorans, using artificial sediment based on alumina particles, on which BaP was coated. The degradation rates of BaP treated either by UV-C for one day or by bacterial inoculum for two days, were 59% or 78%, respectively. The toxicities of remaining BaP and degrading intermediates were 32% and 12.5%. To enhance the degradation rate of BaP, UV-C and bacterial degradation were combined. The first microcosm was irradiated by UV-C for one day followed by the bacterial degradation for additional one day and the the second has been incubated with bacteria prior to UV-irradiation. The degradation rates in the two microcosms were increased to 94.2 ~ 99.6% compared to that of inoculation only. Toxicity was also decreased to 22 ~ 23.5% compared to that of 32%, UV-C irradiation only. The toxic intermediates presumably derived from UV treatment can be reduced by bacteria. It could be applicable as one of the effective and environment-friendly methods for the remediation of PAHs contaminated in marine sediment.
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/31620
Bibliographic Citation
한국해양환경공학회 2004년도 추계학술대회 논문집, pp.129 - 133, 2004
Publisher
한국해양환경공학회
Type
Conference
Language
English
Publisher
한국해양환경공학회
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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