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首页> 外文期刊>Waste management & research >Fractionation of Pb and Cu in the fine fraction (<10 mm) of waste excavated from a municipal landfill
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Fractionation of Pb and Cu in the fine fraction (<10 mm) of waste excavated from a municipal landfill

机译：从市政垃圾填埋场挖出的细小颗粒（<10毫米）中的Pb和Cu分离

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摘要

The fractionation of metals in the fine fraction (<10 mm) of excavated waste from an Estonian landfill was carried out to evaluate the metal (Pb and Cu) contents and their potential towards not only mobility but also possibilities of recovery/extraction. The fractionation followed the BCR (Community Bureau of Reference) sequential extraction, and the exchangeable (F1), reducible (F2), oxidizable (F3) and residual fractions were determined. The results showed that Pb was highly associated with the reducible (F2) and oxidizable (F3) fractions, suggesting the potential mobility of this metal mainly when in contact with oxygen, despite the low association with the exchangeable fraction (F1). Cu has also shown the potential for mobility when in contact with oxygen, since high associations with the oxidizable fraction (F3) were observed. On the other hand, the mobility of metals in excavated waste can be seen as beneficial considering the circular economy and recovery of such valuables back into the economy. To conclude, not only the total concentration of metals but also a better understanding of fractionation and in which form metals are bound is very important to bring information on how to manage the fine fraction from excavated waste both in terms of environmental impacts and also recovery of such valuables in the economy.
机译：对来自爱沙尼亚垃圾填埋场的挖掘废料中的细小部分（<10毫米）中的金属进行分馏，以评估金属（Pb和Cu）的含量及其不仅对迁移率的潜力，而且还对回收/萃取的可能性进行了评估。分馏之后依次进行BCR（社区参考局）的提取，并确定了可交换的（F1），可还原的（F2），可氧化的（F3）和残留的馏分。结果表明，Pb与可还原级分（F2）和可氧化级分（F3）高度相关，这表明尽管与可交换级分（F1）的缔合性较低，但该金属主要在与氧气接触时具有潜在的迁移率。由于观察到与可氧化级分（F3）高度缔合，因此Cu与氧气接触时也显示出迁移的潜力。另一方面，考虑到循环经济以及将此类贵重物品重新带回经济领域，被挖掘的废物中金属的流动性可以被视为有益。总而言之，不仅要收集金属的总浓度，而且要更好地理解分馏以及以何种形式结合金属，这对于从环境影响和回收利用方面带来有关如何管理挖掘的废物中的细小部分的信息非常重要。经济中的此类贵重物品。

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  • 来源
    《Waste management & research》 |2017年第11期|1175-1182|共8页
  • 作者

    Kaczala Fabio; Orupõld Kaja; Augustsson Anna L.M.; Burlakovs Juris; Hogland Marika; Bhatnagar Amit; Hogland William K.H.;

  • 作者单位

    Faculty of Health and Life Sciences, Department of Biology and Environmental Sciences, Linnaeus University - LNU, Sweden;

    Department of Water Management, Institute of Forestry and Rural Engineering, Estonian University of Life Sciences, Estonia;

    Faculty of Health and Life Sciences, Department of Biology and Environmental Sciences, Linnaeus University - LNU, Sweden;

    Faculty of Health and Life Sciences, Department of Biology and Environmental Sciences, Linnaeus University - LNU, Sweden;

    Faculty of Health and Life Sciences, Department of Biology and Environmental Sciences, Linnaeus University - LNU, Sweden;

    Department of Environmental Science, University of Eastern Finland, Finland;

    Faculty of Health and Life Sciences, Department of Biology and Environmental Sciences, Linnaeus University - LNU, Sweden;

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

    circular economy; fine fraction; Landfill mining; material recovery; metals fractionation; mobility;

    机译：循环经济细碎垃圾填埋场开采;材料回收;金属分馏;流动性;

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