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Enhancement of aerobic biodegradation in an oxygen-limiting environment using a saponin-based microbubble suspension

Cited 22 time in Web of Science Cited 26 time in Scopus
Authors
Choi, Yong Ju; Kim, Young Jin; Nam, Kyoungphile
Issue Date
2009-08
Publisher
Elsevier
Citation
Environmental Pollution 157, 2197-2202
Keywords
Aerobic biodegradationBioaugmentationMicrobubble suspensionOxygen-deficientSaponin
Abstract
This study investigated the ability of a saponin-based microbubble suspension to enhance aerobic biodegradation of phenanthrene by subsurface delivery. As the microbubble suspension flowed through a sand column pressure buildup and release was repeatedly observed, which delivered oxygen to the less permeable regions. Burkholderia cepacia RPH1, a phenanthrene-degrading bacterium, was mainly transported in a suspended form in the microbubble suspension. When three pore volumes of the microbubble suspension containing B. cepacia RPH1 was introduced into a column contaminated with phenanthrene (100 mg/kg), the oxygen content declined to 5% from an initial value of 20% within 5 days and correspondingly, 34.4% of initial phenanthrene was removed in 8 days. The addition of two further three pore volumes enhanced the biodegradation efficiency by a factor of 2.2. Our data suggest that a saponin-based microbubble suspension could be a potential carrier for enhancing the aerobic biodegradation under an oxygen-limiting environment.
ISSN
0269-7491
Language
English
URI
https://hdl.handle.net/10371/8744
DOI
https://doi.org/10.1016/j.envpol.2009.04.014
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College of Engineering/Engineering Practice School (공과대학/대학원)Dept. of Civil & Environmental Engineering (건설환경공학부)Journal Papers (저널논문_건설환경공학부)
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