Impacts of surface sealings on long-term plume development at a former coking plant area

Hornbruch, G., Schäfer, D. and Dahmke, A. (2008) Impacts of surface sealings on long-term plume development at a former coking plant area Grundwasser, 13 (3). pp. 167-175. DOI 10.1007/s00767-008-0065-x.

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Abstract

Changes in the electron acceptor supply must be considered in order to simulate reliable future plume spreading in groundwater. For example, decreasing amounts of electron acceptor mass fluxes from the unsaturated zone caused by less groundwater recharge due to surface sealing could lead to further plume spreading during the forecast horizon. However, to accept monitored natural attenuation (MNA) as an alternative remediation strategy, steady state plumes have to be proved. This article deals with the quantitative impacts of different amounts of surface sealing on future plume spreading by using a reactive transport model. Due to these interventions, the results show significant changes in plume length (increases up to 50%) and in some cases the plumes no longer attain steady-state conditions. This underlines the necessity of considering surface sealing scenarios for MNA concepts at such sites.

Document Type: Article
Keywords: natural attenuation reactive transport modelling BTEX, PAK sources for electron acceptors contaminated aquifer biodegradation recharge model groundwater simulation reduction sulfate
Research affiliation: Kiel University
DOI etc.: 10.1007/s00767-008-0065-x
ISSN: 1430-483X
Date Deposited: 12 Jan 2012 06:02
Last Modified: 08 Oct 2012 10:14
URI: http://eprints.uni-kiel.de/id/eprint/15844

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