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首页> 外文期刊>Environmental Science & Technology >Estrone Degradation: Does Organic Matter (Quality), Matter?
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Estrone Degradation: Does Organic Matter (Quality), Matter?

机译：雌酮降解：有机物质（质量）是否重要？

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摘要

Understanding the parameters that drive E1 degradation is necessary to improve existing wastewater treatment systems and evaluate potential treatment options. Organic matter quality could be an important parameter. Microbial communities grown from activated sludge seeds using different dissolved organic matter sources were tested for El degradation rates. Synthetic wastewater was aged, filter-sterilized, and used as a carbon and energy source to determine if recalcitrant organic carbon enhances El degradation. Higher El degradation was observed by biomass grown on 8 d old synthetic wastewater compared to biomass grown on fresh synthetic wastewater (P = 0.033) despite much lower concentrations of bacteria. Minimal or no El degradation was observed in biomass grown on 2 d old synthetic wastewater. Organic carbon analyses suggest that products of cell lysis or microbial products released under starvation stress stimulate El degradation. Additional water sources were also tested: lake water, river water, and effluents from a municipal wastewater treatement plant and a treatment wetland. E1 degradation was only observed in biomass grown in treatment effluent. Nitrogen, dissolved organic carbon, and trace element concentrations were not causative factors for E1 degradation. In both experiments, spectrophotometric analyses reveal degradation of El is associated with microbially derived organic carbon but not general recalcitrance.
机译：了解驱动E1降解的参数对于改善现有的废水处理系统和评估潜在的处理方案是必要的。有机物质量可能是一个重要参数。测试了使用不同溶解有机物源从活性污泥种子中生长的微生物群落的El降解速率。合成废水经过老化，过滤灭菌，并用作碳和能源，以确定顽固性有机碳是否能增强El的降解。尽管细菌浓度低得多，但在8天旧合成废水中生长的生物质比在新鲜合成废水中生长的生物质（P = 0.033）观察到更高的El降解。在2d旧合成废水中生长的生物质中，观察到的El降解极少或没有。有机碳分析表明，在饥饿压力下释放的细胞裂解产物或微生物产物会刺激El降解。还测试了其他水源：湖水，河水以及市政废水处理厂和处理湿地的废水。仅在处理废水中生长的生物质中观察到E1降解。氮，溶解的有机碳和微量元素浓度不是E1降解的原因。在两个实验中，分光光度分析均显示El的降解与微生物衍生的有机碳有关，但与一般的顽固性无关。

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  • 来源
    《Environmental Science & Technology》 |2015年第1期|498-503|共6页
  • 作者

    David T. Tan; Hanna R. Temme; William A. Arnold; Paige J. Novak;

  • 作者单位

    Department of Civil, Environmental, and Geo-Engineering, University of Minnesota, 500 Pillsbury Drive SE, Minneapolis, Minnesota 55455, United States;

    Department of Civil, Environmental, and Geo-Engineering, University of Minnesota, 500 Pillsbury Drive SE, Minneapolis, Minnesota 55455, United States;

    Department of Civil, Environmental, and Geo-Engineering, University of Minnesota, 500 Pillsbury Drive SE, Minneapolis, Minnesota 55455, United States;

    Department of Civil, Environmental, and Geo-Engineering, University of Minnesota, 500 Pillsbury Drive SE, Minneapolis, Minnesota 55455, United States;

  • 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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  • 正文语种 eng
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