Journal article
Successive identification of biodegradation rates for multiple sequentially reactive contaminants in groundwater
Journal of contaminant hydrology, Vol.51(1), pp.83-95
2001
Handle:
https://hdl.handle.net/2376/117156
PMID: 11530928
Abstract
At the field scale, the biodegradation rate is usually estimated from analytical solutions to single species transport with first-order reactions, using measured data as input. Because many contaminants, e.g., chlorinated solvents, are degraded in a sequential pattern, with degradation products further reacting to produce new species, it is of great interest to quantify the transformation rate of every reaction. The conventional inverse solutions for identifying the transformation rates are limited to single species problems. In the present study, we propose a successive optimization approach to identify the biodegradation rate for each species by using a previously developed analytical solution to multi-species first-order reactive transport using data obtained at the field scale. By specifying a link between analytical solutions to sequentially reactive transport problems and optimization methods and assuming constant transport parameters (velocity, dispersivities, and retardation factors), the first-order transformation rates are optimized successively from parent species to its daughter species.
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Details
- Title
- Successive identification of biodegradation rates for multiple sequentially reactive contaminants in groundwater
- Creators
- Yunwei Suna - Groundwater Modeling Group, Weiss Associates, 5801 Christie Avenue, Suite 600, Emeryville, CA 94608-1827, USAJames N Petersen - Center for Multiphase Environmental Research, Washington State University, PO Box 642710, Pullman, WA 99164-2719 USAJacob Bearc - Department of Civil Engineering, Technion-Israel Institute of Technology, Haifa 32000, Israel
- Publication Details
- Journal of contaminant hydrology, Vol.51(1), pp.83-95
- Academic Unit
- Chemical Engineering and Bioengineering, School of
- Publisher
- Elsevier B.V
- Identifiers
- 99900548451601842
- Language
- English
- Resource Type
- Journal article