Prommer, Henning ; Aziz, Lidia H. ; Bolaño, Nerea ; Taubald, Heinrich ; Schüth, Christoph (2008)
Modelling of geochemical and isotopic changes in a column experiment for degradation of TCE by zero-valent iron.
In: Journal of Contaminant Hydrology, 97 (1-2)
doi: 10.1016/j.jconhyd.2007.11.003
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
Zero-valent iron (ZVI) permeable-reactive barriers have become an increasingly used remediation option for the in situ removal of various organic and inorganic chemicals from contaminated groundwater. In the present study a process-based numerical model for the transport and reactions of chlorinated hydrocarbon in the presence of ZVI has been developed and applied to analyse a comprehensive data set from laboratory-scale flow-through experiments. The model formulation includes a reaction network for the individual sequential and/or parallel transformation of chlorinated hydrocarbons by ZVI, for the resulting geochemical changes such as mineral precipitation, and for the carbon isotope fractionation that occurs during each of the transformation reactions of the organic compounds. The isotopic fractionation was modelled by formulating separate reaction networks for lighter (12C) and heavier (13C) isotopes. The simulation of a column experiment involving the parallel degradation of TCE by hydrogenolysis and β-elimination can conclusively reproduce the observed concentration profiles of all collected organic and inorganic data as well as the observed carbon isotope ratios of TCE and its daughter products. © 2007 Elsevier B.V. All rights reserved.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2008 |
| Autor(en): | Prommer, Henning ; Aziz, Lidia H. ; Bolaño, Nerea ; Taubald, Heinrich ; Schüth, Christoph |
| Art des Eintrags: | Bibliographie |
| Titel: | Modelling of geochemical and isotopic changes in a column experiment for degradation of TCE by zero-valent iron |
| Sprache: | Englisch |
| Publikationsjahr: | April 2008 |
| Verlag: | Elsevier |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Journal of Contaminant Hydrology |
| Jahrgang/Volume einer Zeitschrift: | 97 |
| (Heft-)Nummer: | 1-2 |
| DOI: | 10.1016/j.jconhyd.2007.11.003 |
| URL / URN: | https://www.sciencedirect.com/science/article/pii/S016977220... |
| Kurzbeschreibung (Abstract): | Zero-valent iron (ZVI) permeable-reactive barriers have become an increasingly used remediation option for the in situ removal of various organic and inorganic chemicals from contaminated groundwater. In the present study a process-based numerical model for the transport and reactions of chlorinated hydrocarbon in the presence of ZVI has been developed and applied to analyse a comprehensive data set from laboratory-scale flow-through experiments. The model formulation includes a reaction network for the individual sequential and/or parallel transformation of chlorinated hydrocarbons by ZVI, for the resulting geochemical changes such as mineral precipitation, and for the carbon isotope fractionation that occurs during each of the transformation reactions of the organic compounds. The isotopic fractionation was modelled by formulating separate reaction networks for lighter (12C) and heavier (13C) isotopes. The simulation of a column experiment involving the parallel degradation of TCE by hydrogenolysis and β-elimination can conclusively reproduce the observed concentration profiles of all collected organic and inorganic data as well as the observed carbon isotope ratios of TCE and its daughter products. © 2007 Elsevier B.V. All rights reserved. |
| Freie Schlagworte: | Isotopic fractionation,Reactive barriers,Reactive transport,TCE,ZVI |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Geowissenschaften > Fachgebiet Hydrogeologie |
| Hinterlegungsdatum: | 17 Apr 2018 12:21 |
| Letzte Änderung: | 12 Jan 2019 21:20 |
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