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首页> 外文期刊>Chemosphere >Leaching behavior and potential ecological risk of heavy metals in Southwestern China soils applied with sewage sludge compost under acid precipitation based on lysimeter trials
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Leaching behavior and potential ecological risk of heavy metals in Southwestern China soils applied with sewage sludge compost under acid precipitation based on lysimeter trials

机译：基于Lysimeter试验的酸性污泥堆肥应用污水污泥堆肥的浸出行为及潜在生态风险

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摘要

The ecological risk of heavy metals (HM) resulting from the use of sewage sludge compost (SSC) as an amendment to flower garden soil (FGS) and to abandoned phosphate mine soil (APMS) influenced by acid rain were simulated in lysimeter trials and the potential ecological risk index (PERI) was evaluated with minor modifications. The use of SSC indeed increased the mobility and release of HMs in FGS and APMS under conditions of acid rain. The leaching dynamics of HMs was found to be influenced by Fe/Al oxides and organic matter (OM) in the soil. The application of SSC as a fertilizer to barren APMS dramatically decreased the mobility of Cr, Cu and Pb by 51-56% due to their retention by particulate organic matter, while the leaching of As, Cd and Ni was increased as the result of competition with OM for available Fe/Al oxides (As) and proton-metal exchange reactions that occurred in HM-OM complexes (Cd and Ni). The ecological risk of FGS and APMS resulting from HM migration was actually low (PERI = 0.07-0.12), but the increased potential ecological risk resulting from the use of SSC were estimated to be moderate (a 16.0-33.5% increase in PERI for SSC-amended FGS) or high (a 140% increase in PERI for SSC-amended APMS). Ni, Cd and Cu were identified as the three main HMs responsible for increasing the ecological risk in soil which was mainly composed of fine-grained particles, whereas Cd and As were key ecological risks HMs in soil that was mainly composed of coarse-grained particles. (C) 2020 Elsevier Ltd. All rights reserved.
机译：利用污水污泥堆肥（SSC）作为对花园土壤（FGS）的修正和受酸雨影响的磷矿矿山土壤（APMS）的修正，在Lysimeter试验中进行了生态风险通过轻微的修改评估潜在的生态风险指数（PERI）。 SSC的使用确实在酸雨条件下增加了FGS和APMS中HMS的流动性和释放。发现HMS的浸出动态受到土壤中Fe / Al氧化物和有机物（OM）的影响。 SSC作为贫瘠Apms的应用显着降低了Cr，Cu和Pb的迁移率由于颗粒状有机物质的保留而在51-56％的情况下，随着竞争的结果增加，CD和Ni的浸出量增加对于可用的Fe / Al氧化物（AS）和在HM-OM复合物（CD和Ni）中发生的质子 - 金属交换反应。由HM迁移产生的FGS和APM的生态风险实际上是低（PERI = 0.07-0.12），但估计使用SSC的使用产生的潜在生态风险估计是适度的（SSC的PERI增加16.0-33.5％ -AMENTED FGS）或高（PERI的140％增加，SSC修正APMS）。 Ni，Cd和Cu被鉴定为负责提高主要由细粒颗粒组成的土壤生态风险的三个主要HMS，而CD和土壤中主要是由粗粒颗粒组成的土壤中的重点生态风险。 。 （c）2020 elestvier有限公司保留所有权利。

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  • 来源
    《Chemosphere》 |2020年第6期|126212.1-126212.10|共10页
  • 作者

    Qi Guangxia; Jia Yufeng; Liu Wenjie; Wei Yonghong; Du Bin; Fang Wen; Guo Yumei; Guo Fang; Wu Yihui; Zou Qiong; Liu Jianguo;

  • 作者单位

    Beijing Technol & Business Univ Dept Environm Sci & Engn Beijing 100048 Peoples R China;

    Tsinghua Univ Sch Environm Dept Environm Engn Beijing 100084 Peoples R China;

    Tsinghua Univ Sch Environm Dept Environm Engn Beijing 100084 Peoples R China;

    Tsinghua Univ Sch Environm Dept Environm Engn Beijing 100084 Peoples R China;

    Tsinghua Univ Sch Environm Dept Environm Engn Beijing 100084 Peoples R China;

    Nanjing Univ Sch Environm State Key Lab Pollut Control & Resource Reuse Nanjing 210023 Jiangsu Peoples R China;

    Kunming Dianchi Water Treatment Co Ltd Kunming 650228 Yunnan Peoples R China;

    Kunming Dianchi Water Treatment Co Ltd Kunming 650228 Yunnan Peoples R China;

    Kunming Dianchi Water Treatment Co Ltd Kunming 650228 Yunnan Peoples R China;

    Yunnan Res Acad Ecoenvironm Sci Kunming 650034 Yunnan Peoples R China;

    Tsinghua Univ Sch Environm Dept Environm Engn Beijing 100084 Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Sewage sludge compost; Heavy metals; Land application; Lysimeter trials; Ecological risk;

    机译：污水污泥堆肥;重金属;土地应用;溶血仪试验;生态风险;

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