Yapici, SinanAltay, Ilhan2024-08-042024-08-0420220019-45060975-007Xhttps://doi.org/10.1080/00194506.2022.2059020https://hdl.handle.net/11616/100622Stirred vessels are encountered in a wide scale of applications from bench to industrial processes, and the knowledge of the heat/mass transfer rates in these vessels is required for their design, operation and control. This work submits an investigation on the mass transfer to a small circular surface immersed in a stirred vessel in the parameter ranges of 267 < Re <9437, 1473 < Sc <61,422, and 0.022 < x/d(k) < 0.22 for the distance between the impeller blade tip and the transfer surface. The Reynolds number was based on the impeller diameter. The electrochemical limiting diffusion current technique having a potassium ferri-/ferrocyanide system was applied for mass transfer coefficient measurements. Aqueous glycerine solutions were prepared to attain a wide range of Sc numbers. The rate of mass transfer is enhanced with increasing rotation rate, decreasing blade tip-to-electrode surface distance, and decreasing glycerine concentration. The experimental data were well correlated by the relation Sh = 8.517Re(0.473)Sc(0)(.402)(x/d(k))(-0.042). [GRAPHICS] .eninfo:eu-repo/semantics/closedAccesselectrochemical limiting current techniqueconvective transfermass transferstirred vesselArticle64557659310.1080/00194506.2022.20590202-s2.0-85129138410Q3WOS:000778832100001N/A