Measurements of Interfacial Tension of D2EHPA Extraction Solution Systems by Laser light Scattering Method and Identification of the Adsorbed Species.

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  • Kanki Tatsuo
    Department of Chemical Engineering, Himeji Institute of Technology
  • Asano Tsuyoshi
    Department of Chemical Engineering, Himeji Institute of Technology
  • Yamashita Hiroshi
    Department of Chemical Engineering, Himeji Institute of Technology
  • Uetani Susumu
    Department of Chemical Engineering, Himeji Institute of Technology
  • Kim Hiroyoshi
    Department of Chemical Engineering, Himeji Institute of Technology

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  • レーザ光散乱法によるＤ２ＥＨＰＡ抽出系の界面張力の測定および界面活性種の特定
  • レーザコウ サンランホウ ニヨル D2EHPA チュウシュツケイ ノ カイメン

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Abstract

The interfacial tensions of two phase extraction systems, D 2 EHPA in benzene/ cupric aqueous solution and D 2 EHPA in benzene/ferric aqueous solution, were measured by a laser light scattering method. The interfacial tensions were confirmed to exhibit specific dependencies of extractant and hydrogen ion concentrations as had been determined by the Whilhelmy plate method. It was also verified that in the solution system without metallic ion, the monomer extractant and its anion are surface active, in a copper extraction system there forms no surface active intermediate complex, whereas in iron extraction system, there forms the 1 : 2 intermediate complex which is surface active.

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