Evaluation of the interaction between biodegradation and sorption of phenanthrene in soil-slurry systems
SCIE
SCOPUS
- Title
- Evaluation of the interaction between biodegradation and sorption of phenanthrene in soil-slurry systems
- Authors
- Woo, SH; Park, JM; Rittmann, BE
- Date Issued
- 2001-04-05
- Publisher
- JOHN WILEY & SONS INC
- Abstract
- This work develops and utilizes a non-steady-state model for evaluating the interactions between sorption and biodegradation of hydrophobic organic compounds in soil-slurry systems. The model includes sorption/desorption of a target compound, its utilization by microorganisms as a primary substrate existing in the dissolved phase, and/or the sorbed phase in biomass and soil, oxygen transfer, and oxygen utilization as an electron acceptor. Biodegradation tests with phenanthrene were conducted in liquid and soil-slurry systems. The soil-slurry tests were performed with very different mass transfer rates: fast mass transfer in a flask test at 150 rpm, and slow mass transfer in a roller-bottle test at 2 rpm. The results of liquid tests indicate that biodegradation of the soil-soluble organic fraction did not significantly enhance the biodegradation rate. In the slurry tests, phenanthrene was degraded more rapidly than in liquid tests, but at a similar rate in both slurry systems. Modeling analyses with several hypotheses indicate that a model without biodegradation of compound sorbed to the soil was not able to account for the rapid degradation of phenanthrene, particularly in the roller-bottle slurry test. The model with sorbed-phase biodegradation and the same biokinetic parameters, but unique mass transfer: coefficients, simulated the experimental data in both slurry tests most successfully. Reduced mass transfer resistance:to bacteria attached to the soil is the most likely phenomenon accounting for rapid sorbed-phase biodegradation. (C) 2001 John Wiley & Sons, Inc.
- Keywords
- phenanthrene; biodegradation; soil slurry; sorbed-phase biodegradation; non-steady-state model; kinetics; POLYCYCLIC AROMATIC-HYDROCARBONS; MICROBIAL-DEGRADATION; CONTAMINATED SOIL; ORGANIC-COMPOUNDS; ACTIVATED CARBON; MASS-TRANSFER; PAH COMPOUNDS; BIOAVAILABILITY; MODEL; GROWTH
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/19630
- DOI
- 10.1002/1097-0290(20010405)73:1<12::AID-BIT1032>3.0.CO;2-W
- ISSN
- 0006-3592
- Article Type
- Article
- Citation
- BIOTECHNOLOGY AND BIOENGINEERING, vol. 73, no. 1, page. 12 - 24, 2001-04-05
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- There are no files associated with this item.
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