Method of Extracting Dioxins from Contaminated Soil and Decomposition of Extracted Dioxins Using Ru .ALPHA.-Fe Fe3O4 Composite Particles

• OKITA Tomoko

  Toda Kogyo Corp.

• OKINAKA Kenji

  Toda Kogyo Corp.

• MATSUI Toshiki

  Toda Kogyo Corp.

• BITO Shin

  Toda Kogyo Corp.

• KAKUYA Koji

  Toda Kogyo Corp.

• UEGAMI Masayuki

  Toda Kogyo Corp.

Bibliographic Information

Other Title

• ダイオキシン汚染土壌からのダイオキシン抽出法およびＲｕ・α‐Ｆｅ・Ｆｅ３Ｏ４複合粒子による抽出ダイオキシンの分解
• ダイオキシン汚染土壌からのダイオキシン抽出法およびRu・α-Fe・Fe3O4複合粒子による抽出ダイオキシンの分解
• ダイオキシン オセン ドジョウ カラ ノ ダイオキシン チュウシュツホウ オヨビ Ru アルファ Fe Fe3O4 フクゴウ リュウシ ニ ヨル チュウシュツ ダイオキシン ノ ブンカイ

Abstract

To carry out the decomposition of chlorinated aromatic compounds such as dioxins, which are hard to decompose at room temperature, nanoscale α-Fe · Fe₃O₄ composite particles were synthesized via α-FeO(OH) obtained by the reaction of ferrous sulfate and sodium carbonate aqueous solutions and contained 0.25 wt% precious metals (Pt, Pd, Rh and Ru). As the result of the decomposition of chlorobenzene (CB) using the composite particles containing precious metals, it was shown that Rh · α-Fe · Fe₃O₄ and Ru · α-Fe · Fe₃O₄ composite particles exhibit superior dechlorination function. Ru · α-Fe · Fe₃O₄ composite particles were selected because of their low price. For the application of dioxin decomposition at room temperature in contaminated soil, an extractive reagent was selected. Successively, the decomposition of dioxins in extracted-reagent- suspended soil using Ru · α-Fe · Fe₃O₄ composite particles was carried out at room temperature for seven days, and the initial Toxicity Equivalency Quantity (TEQ) values of dioxins in the solvents and soils decreased to 41-63% after the decomposition.

Journal

• Journal of Japan Society on Water Environment

  Journal of Japan Society on Water Environment 30 (2), 95-99, 2007

  Japan Society on Water Environment

Keywords

• α-Fe · Fe₃O₄ composite particles
• dechlorination
• dioxins
• soil
• precious metals

Details

• CRID: 1390001205081319936
• NII Article ID: 10018496869
• NII Book ID: AN10372439
• DOI: 10.2965/jswe.30.95
• COI: 1:CAS:528:DC%2BD2sXjsV2lu7o%3D
• ISSN: 18813690
• ISSN: 09168958
• ISSN: http://id.crossref.org/issn/09168958
• NDL BIB ID: 8683480
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I8683480
• Web Site: https://www.jstage.jst.go.jp/article/jswe/30/2/30_2_95/_pdf
• Text Lang: ja
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed