[논문]EFFECTS OF TRANSFORMATION CAPACITY ON COMETABOLIC DEGRADATION OF TRICHLOROETHENE

Lee, Seung-Bong; Kim, Geon-Ha

doi:10.4491/eer.2005.10.2.079

EFFECTS OF TRANSFORMATION CAPACITY ON COMETABOLIC DEGRADATION OF TRICHLOROETHENE 원문보기

Environmental engineering research, v.10 no.2, 2005년, pp.79 - 87

Lee, Seung-Bong , Kim, Geon-Ha

Abstract ▼ AI-Helper

The effects of transformation capacity on cometabolic degradation of trichloroethene (TCE) were evaluated using TCE-degrading actinomycetes pure and mixed culture under various culture conditions. The TCE transformation capacity of the actinomycetes enrichment culture in a batch test with phenol addition was 1.0 mg of TCE/mg of volatile suspended solids (VSS). The resting cell TCE transformation capacity of the actinomycetes pure culture cell was 0.75 mg TCE/mg VSS, which increased to 2.0 mg TCE/mg VSS when phenol was added as an external substrate. When the pure culture had an internal substrate in the form of poly-β-hydroxybutyrate (PHB) at 19% of the cell mass, the resting cell TCE transformation capacity increased from 0.47 to 0.6 mg TCE/mg VSS. The presence of PHB increased transformation capacity by 57%, whereas, the addition of phenol caused more than two fold increase in transformation capacity. The actinomycetes culture showed the highest transformation capacity.

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문제 정의

This research evaluated the effects of transformation capacity on cometabolic degradation of TCE using actinomycetes culture under various culture conditions. Both mixed and pure actinomycetes culture were used for TCE transformation capacity tests.

제안 방법

As shown in this study, the Tc values measured in TCE batch experiments depend on several factors such as the type of culture used, history of culture cultivation and the availability of electron donor in the form of an internal or external substrate.
In this study, the effects of transformation capacity on cometabolic TCE degradation were evaluated under batch experiments in the presence of both internal and external substrate. Modest amount of phenol was added to evaluate the effect of external substrate on the actino- mycetes culture with high transformation capacity.
Modest amount of phenol was added to evaluate the effect of external substrate on the actino- mycetes culture with high transformation capacity. The effect of internal substrate was investigated by measuring the internal P_너R concentrations. The culture used was phenoldegrading actinomycetes bacteria in both mixed and pure culture.

성능/효과

3. When the pure culture had an internal substrate in the form of poly- B -hydroxybutyrate (PHB) at 19% of the cell mass, the resting cell TCE transformation capacity increased from 0:47 to 0.6 mg TCE/mg VSS.
4. The presence of PHB increased transformation capacity by 57%, whereas, the addition of phenol caused more than two fold increase in transformation capacity. The actinomycetes culture showed the highest transformation capacity.

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DOI : 10.4491/eer.2005.10.2.079 [무료]
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