DEMULSIFICATION OF W/0 EMULSION BY USE OF HIGH VOLTAGE OF A.C. FIELDS

KATSUHIKO FUJINAWA; MITSUGU MORISHITA; MITSUNORI HOZAWA; NOBUYUKI IMAISHI; HAJIME INO

doi:10.1252/jcej.17.632

KATSUHIKO FUJINAWA, MITSUGU MORISHITA, MITSUNORI HOZAWA, NOBUYUKI IMAISHI, HAJIME INO

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Keywords: Extraction, Demulsification, W/O Emulsion, Electric Field, A. C. Potential, Hydrometallurgy, Liquid Surfactant Membrane

JOURNAL FREE ACCESS

1984 Volume 17 Issue 6 Pages 632-636

DOI https://doi.org/10.1252/jcej.17.632

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Abstract

The rate of demulsification of W/O emulsion was studied experimentally, using a batch A.C. electric demulsifier. The oil phase was kerosene, containing Span 80 as a surfactant (C_s = 1-7 wt %), and LIX64N as an extraction reagent (C_LIX=0-8wt%).
The water phase contained an electrolyte such as NaCl, H₂SO₄ or CuSO₄ (C_E = 0-0.6 mol/dm³).
It is clarified that the rate of demulsification is proportional to C^-0.5_S and increases as C_LIX and C_E increase. An experimental equation is presented for estimation of the demulsification rate.

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