Engelhardt, Irina ; Prommer, Henning ; Schulz, Manoj ; Vanderborght, Jan ; Schüth, Christoph ; Ternes, Thomas A. (2014)
Reactive transport of iomeprol during stream-groundwater interactions.
In: Environmental Science and Technology, 48 (1)
doi: 10.1021/es403194r
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
The transport and biochemical transformations of the iodinated X-ray contrast medium (ICM) iomeprol were studied at the stream/groundwater interface. During a one-month field experiment piezometric pressure heads, temperatures, and concentrations of redox-sensitive species, iomeprol and 15 of its transformation products (TPs) were collected in stream- and groundwater. The data set was analyzed and transformation processes and rates identified by comparing conservative and reactive transport simulations. ICM and TP transformations were simulated as a cometabolic process during organic carbon degradation. Using iomeprol/TPs ratios as calibration constrain mitigated the uncertainties associated with the high variability of the ICM wastewater discharge into the investigated stream. The study provides evidence that biodegradation of ICM occurs at the field-scale also for predominantly denitrifying conditions. Under these anaerobically dominated field conditions shortest simulated half-life (21 days) was in the same range as previously reported laboratory-determined half-lives for aerobic conditions.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2014 |
| Autor(en): | Engelhardt, Irina ; Prommer, Henning ; Schulz, Manoj ; Vanderborght, Jan ; Schüth, Christoph ; Ternes, Thomas A. |
| Art des Eintrags: | Bibliographie |
| Titel: | Reactive transport of iomeprol during stream-groundwater interactions |
| Sprache: | Englisch |
| Publikationsjahr: | Januar 2014 |
| Verlag: | American Chemical Society |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Environmental Science and Technology |
| Jahrgang/Volume einer Zeitschrift: | 48 |
| (Heft-)Nummer: | 1 |
| DOI: | 10.1021/es403194r |
| URL / URN: | http://pubs.acs.org/doi/10.1021/es403194r |
| Kurzbeschreibung (Abstract): | The transport and biochemical transformations of the iodinated X-ray contrast medium (ICM) iomeprol were studied at the stream/groundwater interface. During a one-month field experiment piezometric pressure heads, temperatures, and concentrations of redox-sensitive species, iomeprol and 15 of its transformation products (TPs) were collected in stream- and groundwater. The data set was analyzed and transformation processes and rates identified by comparing conservative and reactive transport simulations. ICM and TP transformations were simulated as a cometabolic process during organic carbon degradation. Using iomeprol/TPs ratios as calibration constrain mitigated the uncertainties associated with the high variability of the ICM wastewater discharge into the investigated stream. The study provides evidence that biodegradation of ICM occurs at the field-scale also for predominantly denitrifying conditions. Under these anaerobically dominated field conditions shortest simulated half-life (21 days) was in the same range as previously reported laboratory-determined half-lives for aerobic conditions. |
| 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 12:32 |
| Letzte Änderung: | 12 Jan 2019 21:20 |
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