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首页> 外文期刊>Journal of Hazardous Materials >Combined mild soil washing and compost-assisted phytoremediation in treatment of silt loams contaminated with copper, nickel, and chromium
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Combined mild soil washing and compost-assisted phytoremediation in treatment of silt loams contaminated with copper, nickel, and chromium

机译：结合温和的土壤洗涤和堆肥辅助的植物修复技术，处理被铜，镍和铬污染的淤泥壤土

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摘要

A new soil remediation option, combining the soil washing process using pure water followed by the compost-assisted phytoextraction, is evaluated using silt loams contaminated with plating wastewa-ter containing Cu, Ni, and Cr. Plants utilized in this study are the rapeseeds, sunflowers, tomatoes, and soapworts. Phytoextraction operation was carried out in pot experiments over a period of 4 months. Metal concentrations in roots and shoots of plants were analyzed upon completion of each pot experiment. Hypothesis testing was employed in assessing the significance of difference in the experimental data. Results indicated that the rapeseed, a hyperaccumulator, is most effective in extracting metals from the compost-amended silt loams. The fast-growing sunflowers and tomatoes are comparable to rapeseeds in accumulating metals despite their relatively low metal concentrations in tissues. Bioaccu-mulation coefficients obtained for all plants are less than one, indicating that phytostabilization rather than phytoextraction is the dominant mechanism at this simulated final-phase condition.
机译：一种新的土壤修复方案，结合使用纯水的土壤洗涤过程和堆肥辅助的植物浸出技术，通过使用含铜，镍和铬的电镀废水污染的淤泥壤土来进行评估。本研究中使用的植物是油菜籽，向日葵，西红柿和肥皂草。在盆栽实验中进行了4个月的植物提取操作。完成每个盆栽实验后，分析植物根和芽中的金属浓度。假设检验用于评估实验数据差异的显着性。结果表明，油菜籽是一种超级蓄积剂，最有效地从堆肥改良的粉壤土中提取金属。尽管金属组织中的金属含量相对较低，但快速生长的向日葵和番茄在累积金属方面与油菜籽相当。所有植物获得的生物累积系数均小于1，这表明在这种模拟的最终阶段条件下，植物稳定而不是植物提取是主要机制。

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  • 来源
    《Journal of Hazardous Materials》 |2011年第3期|p.744-754|共11页
  • 作者

    Menghau Sung; Chi-Yi Lee; Suen-Zone Lee;

  • 作者单位

    Department of Environmental Science and Engineering. Tunghai University. Taichung 40704, Taiwan;

    Cuan-Cheng Environ. Tech. Protection Co.. Ltd., Tainan 71066, Taiwan;

    Department of Environmental Engineering and Science, Chia-Nan University, Tainan 71710, Taiwan;

  • 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);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    phytoremediation; soil washing; heavy metals; compost; green remediation;

    机译：植物修复;水洗;重金属;堆肥;绿色修复;

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