Browse
S-Space
College of Engineering/Engineering Practice School (공과대학/대학원)
Dept. of Civil & Environmental Engineering (건설환경공학부)
Journal Papers (저널논문_건설환경공학부)
Enhancement of aerobic biodegradation in an oxygen-limiting environment using a saponin-based microbubble suspension
- Issue Date
- 2009-08
- Publisher
- Elsevier
- Citation
- Environmental Pollution 157, 2197-2202
- Keywords
- Aerobic biodegradation ; Bioaugmentation ; Microbubble suspension ; Oxygen-deficient ; Saponin
- 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
- Files in This Item: There are no files associated with this item.
Items in S-Space are protected by copyright, with all rights reserved, unless otherwise indicated.