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首页> 外文期刊>Environmental Science & Technology >Reactive Transport of lomeprol during Stream-Groundwater Interactions
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Reactive Transport of lomeprol during Stream-Groundwater Interactions

机译：洛美洛尔在溪流与地下水相互作用中的反应性运输

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摘要

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.
机译：在流/地下水界面处研究了碘化X射线造影剂（iomeprol）的输运和生化转化。在为期一个月的野外实验中，在水流和地下水中收集了压测压头，温度和氧化还原敏感物质的浓度，碘美普尔及其15种转化产物（TPs）。通过比较保守的和反应性的运输模拟，分析了数据集并确定了转化过程和转化率。 ICM和TP转换被模拟为有机碳降解过程中的新陈代谢过程。使用iomeprol / TPs比率作为校准约束可减轻与ICM废水排放到研究水流中的高变异性相关的不确定性。这项研究提供的证据表明，在主要反硝化条件下，ICM也会在田间规模上发生生物降解。在这些以厌氧为主的田间条件下，最短的模拟半衰期（21天）与有氧条件下实验室报道的半衰期相同。

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  • 来源
    《Environmental Science & Technology》 |2014年第1期|199-207|共9页
  • 作者

    Irina Engelhardt; Henning Prommer; Manoj Schulz; Jan Vanderborght; Christoph Schueth; Thomas A. Ternes;

  • 作者单位

    Forschungszentrum Juelich, Institute of Bio-and Geosciences, Agrosphere (IBG-3), Germany,Technical University of Darmstadt, Institute of Applied Geosciences, Germany;

    CSIRO Land and Water, Western Australia,University of Western Australia, School of Earth and Environment, Western Australia,National Centre for Groundwater Research and Training, Flinders University, Adelaide, GPO Box 2100, SA 5001, Australia;

    Federal Institute of Hydrology (BfG), Germany;

    Forschungszentrum Juelich, Institute of Bio-and Geosciences, Agrosphere (IBG-3), Germany;

    Technical University of Darmstadt, Institute of Applied Geosciences, Germany,IWW Rheinisch-Westfalisches Institut fuer Wasserforschung, Muehlheim a. d. Ruhr, Germany;

    Federal Institute of Hydrology (BfG), Germany;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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