Modeling Seasonal Redox Dynamics and the Corresponding Fate of the Pharmaceutical Residue Phenazone During Artificial Recharge of Groundwater

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• 作者：Janek Greskowiak ; Henning Prommer ; Gudrun Massmann ; Gunnar Nü ; tzmann
• 刊名：Environmental Science & Technology
• 出版年：2006
• 出版时间：November 1, 2006
• 年：2006
• 卷：40
• 期：21
• 页码：6615 - 6621
• 全文大小：285K
• 年卷期：v.40,no.21(November 1, 2006)
• ISSN：1520-5851

文摘

Reactive multicomponent transport modeling was used toinvestigate and quantify the factors that affect redoxzonation and the fate of the pharmaceutical residue phenazoneduring artificial recharge of groundwater at an infiltrationsite in Berlin, Germany. The calibrated model and thecorresponding sensitivity analysis demonstrated that temporaland spatial redox zonation at the study site was drivenby seasonally changing, temperature-dependent organicmatter degradation rates. Breakthrough of phenazone atmonitoring wells occurred primarily during the warmersummer months, when anaerobic conditions developed.Assuming a redox-sensitive phenazone degradation behaviorthe model results provided an excellent agreementbetween simulated and measured phenazone concentrations.Therefore, the fate of phenazone was shown to beindirectly controlled by the infiltration water temperaturethrough its effect on the aquifer's redox conditions. Otherfactors such as variable residence times appeared to beof less importance.