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Plate wettability and droplet diameter in a pulsed perforated‐plate extraction column
Author(s) -
Ikeda Hidematus,
Suzuki Atsuyuki
Publication year - 1992
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450700204
Subject(s) - wetting , materials science , composite material , aqueous solution , extraction (chemistry) , contact angle , phase (matter) , plate column , analytical chemistry (journal) , chromatography , chemistry , organic chemistry
Abstract The liquid‐liquid‐plate contact angles of several plate materials were measured using a “preferential wetting method” proposed by the authors. The adhesional work ( I SL ), calculated on the basis of contact angles was utilized to evaluate plate wettability. The experimental results indicate that different plate materials affect differently plate wettability. The plate wettability of stainless steel in an aqueous phase was observed to be different from that in an organic phase. The droplet diameter in the mixer‐settler region of operation of a pulsed perforated‐plate extraction column using several different plate materials, was measured. An empirical correlation of mean droplet diameter: d p = 0.222(a f /l SL 1/3 ) −0.13 is proposed except for alumina plates with dispersed aqueous phase operation.