Biodegradation kinetics of naphthalene in nonaqueous phase liquid-water mixed batch systems: Comparison of model predictions and experimental results
- McGill Univ., Montreal, Quebec (Canada). Dept. of Civil Engineering and Applied Mechanics
- Carnegie Mellon Univ., Pittsburgh, PA (United States). Dept. of Civil and Environmental Engineering
A model is formulated to describe dissolution of naphthalene from an insoluble nonaqueous phase liquid (NAPL) and its subsequent biodegradation in the aqueous phase in completely mixed batch reactors. The physicochemical processes of equilibrium partitioning and mass transfer of naphthalene between the NAPL and aqueous phases were incorporated into the model. Biodegradation kinetics were described by Monod`s microbial growth kinetic model, modified to account for the inhibitory effects of 1,2-naphthoquinone formed during naphthalene degradation under certain conditions. System parameters and biokinetic coefficients pertinent to the NAPL-water systems were determined either by direct measurement or from nonlinear regression of the naphthalene mineralization profiles obtained from batch reactor tests with two-component NAPLs comprised of naphthalene and heptamethylnonane. The NAPLs contained substantial mass of naphthalene, and naphthalene biodegradation kinetics were evaluated over the time required for near complete depletion of naphthalene from the NAPL.
- OSTI ID:
- 571659
- Journal Information:
- Biotechnology and Bioengineering, Vol. 57, Issue 3; Other Information: PBD: 5 Feb 1998
- Country of Publication:
- United States
- Language:
- English
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