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Ionic mass transfer measurements in the case of submerged multijets impinging on to a flat surface
Author(s) -
Krishna P. Gopala,
Venkateswarlu P.
Publication year - 1993
Publication title -
journal of chemical technology and biotechnology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.64
H-Index - 117
eISSN - 1097-4660
pISSN - 0268-2575
DOI - 10.1002/jctb.280560306
Subject(s) - limiting current , mass transfer , jet (fluid) , distributor , diffusion , analytical chemistry (journal) , limiting , electrode , chemistry , materials science , mechanics , thermodynamics , electrochemistry , chromatography , physics , mechanical engineering , engineering
Abstract In the case of submerged multijets impinging on to a flat surface, the limiting current densities were measured at microelectrodes, fixed flush with the target surface using diffusion controlled electrode reactions (i.e. reduction of ferricyanide ion). The height of the multijet distributor from the target surface ( Y ) was varied from 5 to 9 cm. The numbers of holes of the distributor ( N ) studied were 76 and 141. The variation of mass transfer data with radial distance reveals the existence of two different regions, i.e. the impingement region and the wall jet region. The mass transfer rate increased with increase in Y in the impingement region. The effect of Y is negligible in the wall jet region. Decrease in N decreases the mass transfer rate in both the regions. The data are correlated separately for the two regions.