生分解性キレート剤［Ｓ，Ｓ］－ＥＤＤＳおよびＧＬＤＡによる鉛汚染土壌の動電学的浄化処理

• 新苗 正和

  山口大学大学院理工学研究科環境共生系専攻

• 鈴木 祐麻

  山口大学大学院理工学研究科環境共生系専攻

• 古賀 俊之

  山口大学大学院理工学研究科大学院生

• 足立 未緒

  山口大学工学部循環環境工学科学生

• 秋田 憲

  （株）島津製作所経営戦略室

• 大田 昌昭

  （株）島津製作所経営戦略室

書誌事項

タイトル別名

• Electrokinetic Processing of Lead Contaminated Soils Using Biodegradable Chelating Agents [S,S]-EDDS and GLDA
• 生分解性キレート剤〔S,S〕-EDDSおよびGLDAによる鉛汚染土壌の動電学的浄化処理
• セイブンカイセイ キレートザイ S S EDDS オヨビ GLDA ニ ヨル ナマリ オセン ドジョウ ノ ドウデンガクテキ ジョウカ ショリ

抄録

In Application of electrokinetic soil remediation to the heavy metals contaminated soils, the acidification might cause dissolution of part of the solid matrix, and so it is desirable to perform the soil treatment at neutral pH. However, the solubility of most heavy metals is significantly reduced at elevated pH values. The solubility of metals can be enhanced by adding reagents that form metal complexes. Apart from efficacy as metal extractants, complexing agents need also to be rated for safety of use. Biodegradability is of importance because treated soils always contain residual agents that may, upon soil reuse in the field, result in actual metal mobilization and transport to groundwater. It appears therefore essential for these residual agents to be rapidly biodegraded. This is even more important for in-situ soil flushing operations. In this research, the biodegradable chelating agents [S,S]-ethylenediaminedisuccinic acid (EDDS) and N,N-dicarboxymethyl glutamic acid (GLDA) were investigated for their applicability for the removal of lead from soils by electrokinetic processing. The removal efficiency of lead from soils was improved with increase in the concentration of EDDS and the applied electric field strength. It was also found that the concentration of EDDS has a strong effect on the removal efficiency of lead from soils compared with the electrical field strength at the range from 10 V and 20 V. And also, the removal efficiency of lead using platinum-coated titanium used as electrodes increased compared with graphite and iridium dioxide-coated titanium as electrode. Meanwhile, the removal efficiency of lead with GLDA was superior to that with EDDS. However, the high viscosity of GLDA significantly affected the removal efficiency of lead.<br>

収録刊行物

• 環境資源工学

  環境資源工学 58 (3), 114-119, 2011

  一般社団法人 環境資源工学会

キーワード

• 土壌浄化
• 動電学
• 鉛
• 生分解性
• [S,S]-エチレンジアミンコハク酸
• L-グルタミン酸二酢酸

詳細情報

• CRID: 1390282680182778624
• NII論文ID: 130001477302
• NII書誌ID: AA11907992
• DOI: 10.4144/rpsj.58.114
• ISSN: 13499262
• ISSN: 13486012
• NDL書誌ID: 11232470
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I11232470
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可