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首页> 外文期刊>Environmental Science & Technology >Assessment of the Intrinsic Bioremediation Capacity of an Eutrophic River Sediment Polluted by Discharging Chlorinated Aliphatic Hydrocarbons: A Compound-Specific Isotope Approach
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Assessment of the Intrinsic Bioremediation Capacity of an Eutrophic River Sediment Polluted by Discharging Chlorinated Aliphatic Hydrocarbons: A Compound-Specific Isotope Approach

机译：排放氯代脂肪烃污染的富营养化河道沉积物的内在生物修复能力的评估：一种特定于化合物的同位素方法

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摘要

At a field site in the industrial area of Vilvoorde, Belgium, we investigated the capacity of the indigenous microbial community of a eutrophic river sediment to biodegrade chlorinated aliphatic hydrocarbons (CAHs) originating from discharging, polluted groundwater using a compound-specific isotope approach. We specifically targeted the site's major pollutants cis-1,2-dichloroethene (cis-DCE) and vinyl chloride (VC). Analysis of Rayleigh correlation plots enabled us to assess the extent to which microbial and abiotic natural attenuation processes contributed to the mitigation of a pollution of the surface water due to discharging CAH-contaminated groundwater. Our results provide evidence for (ⅰ) the occurrence of biodegradation of c/s-DCE and VC by reductive dechlorination in parts of the aquifer and at several positions in the river sediment,(ⅱ) the presence of river sediment zones exhibiting attenuation of chloroethenes by a combination of biodegradation and dilution through unpolluted water, (ⅲ) the existence of zones in the river sediment lacking significant biodegradation, and thus (ⅳ) a pronounced spatial heterogeneity in the occurrence and extent of biodegradation in the aquifer and river sediment We conclude that at many investigated positions in the river sediment, the indigenous microbial community failed to facilitate complete biodegradation of the groundwater-sourcedrnchloroethenes. The overall intrinsic bioremediation capacity of the river sediment was thus not high enough to completely prevent the release of these pollutants into the surface water. These findings and conclusions are thus in agreement with those of our companion paper (1), which investigated the river sediments at the Vilvoorde study site by a combination of stable hydrogen and oxygen isotope analysis of water and the detection of chlorinated aliphatic hydrocarbons (CAHs) and their dechlorination products.
机译：在比利时Vilvoorde工业区的一个现场，我们研究了富营养化河道沉积物的原生微生物群落利用化合物特异性同位素方法生物降解源自排放受污染的地下水的氯化脂肪族烃（CAH）的能力。我们专门针对了该站点的主要污染物，即顺式1，2-二氯乙烯（顺式DCE）和氯乙烯（VC）。瑞利相关图的分析使我们能够评估微生物和非生物自然衰减过程在多大程度上有助于缓解由于排放受CAH污染的地下水而造成的地表水污染。我们的结果提供了以下证据：（ⅰ）含水层部分和河流沉积物中几个位置发生还原性脱氯作用而导致c / s-DCE和VC生物降解;（ⅱ）河流沉积物区域显示出氯乙烯的衰减通过将生物降解和通过无污染水稀释相结合，（ⅲ）河流沉积物中缺乏明显生物降解的区域的存在，因此（ⅳ）含水层和河流沉积物中生物降解的发生和程度具有明显的空间异质性，我们得出结论由于在河底沉积物的许多调查位置，土著微生物群落未能促进地下水源的氯乙烯的完全生物降解。因此，河流沉积物的整体固有生物修复能力不足以完全阻止这些污染物释放到地表水中。因此，这些发现和结论与我们的同行论文（1）一致，该论文通过对水进行稳定的氢和氧同位素分析以及检测氯代脂肪烃（CAHs）的方法，对Vilvoorde研究地点的河流沉积物进行了研究。及其脱氯产品。

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  • 来源
    《Environmental Science & Technology》 |2009年第14期|5263-5269|共7页
  • 作者

    THOMAS K. KUHN; KELLY HAMONTS; JOHN A. DIJK; HARALD KALKA; WILLIBALD STICHLER; DIRK SPRINGAEL; WINNIE DEJONGHE; RAINER U. MECKENSTOCK;

  • 作者单位

    Helmhollz Zentrum Muenchen, Institute for Groundwater Ecology, Ingolstadter Landstrasse 1, 85764 Neuherberg, Germany CSIRO Land and Water, Private Bag 2, Glen Osmond SA 5064, Australia;

    Flemish Institute for Technological Research (WTO), Separation and Conversion Technology, Boeretang 200, 2400 Mol, Belgium Catholic University of Leuven, Division Soil and Water Management, Kasteelpark Arenberg 20, 3001 Heverlee, Belgium;

    Catholic University of Leuven, Division Soil and Water Management, Kasteelpark Arenberg 20, 3001 Heverlee, Belgium BioSoil R&D BV, Nijverheidsweg 27, 3341 LJ Hendrik Ido Ambacht, The Netherlands;

    Umwelt-und Ingenieurtechnik GmbH (UTT), Zum Windkanal 21, 01109 Dresden, Germany;

    Helmhollz Zentrum Muenchen, Institute for Groundwater Ecology, Ingolstadter Landstrasse 1, 85764 Neuherberg, Germany;

    Catholic University of Leuven, Division Soil and Water Management, Kasteelpark Arenberg 20, 3001 Heverlee, Belgium;

    Flemish Institute for Technological Research (WTO), Separation and Conversion Technology, Boeretang 200, 2400 Mol, Belgium;

    Helmhollz Zentrum Muenchen, Institute for Groundwater Ecology, Ingolstadter Landstrasse 1, 85764 Neuherberg, 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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