Effect of Fe(III) and Ca on Extraction of Pb from Contaminated Soils with Chelating Agents

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  • NIINAE Masakazu
    Department of Environmental Science and Engineering, Graduate School of Science and Engineering, Yamaguchi University
  • NISHIGAKI Koudai
    Graduate student, Kyoto University
  • AKITA Tadashi
    Corporate Strategy Planning Department, Shimadzu Corporation
  • OHTA Masaaki
    Corporate Strategy Planning Department, Shimadzu Corporation

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Other Title
  • キレート剤による汚染土壌からのＰｂの抽出に与えるＦｅ（ＩＩＩ）およびＣａの影響
  • キレート剤による汚染土壌からのPbの抽出に与えるFe(3)およびCaの影響
  • キレートザイ ニ ヨル オセン ドジョウ カラ ノ Pb ノ チュウシュツ ニ アタエル Fe 3 オヨビ Ca ノ エイキョウ

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Abstract

The effect of Fe(III) and Ca as coexistent elements on the extraction of Pb from contaminated soils with the biodegradable chelating agent [S,S]-ethylenediaminedisuccinic acid (EDDS) and the low biodegradable chelating agent ethylenediaminetetraacetic acid (EDTA) was investigated as a series of studies for their applicability for the removal of Pb from contaminated soils by soil washing and electrokinetic processing. The results obtained in this study are summarized as follows:<br> The extraction of Pb with EDTA is suppressed by Ca as coexistent elements at the pH above 7 and by Fe(III) as coexistent elements at acidic region. Meanwhile, the extraction of Pb with EDDS has no effect of Ca at the wide pH range. However, the extraction of Pb with EDDS is significantly suppressed by Fe(III) at the wide pH.<br>

Journal

  • Resources Processing

    Resources Processing 57 (1), 29-34, 2010

    The Resources Processing Society of Japan

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