0011-4561 The effect of external mass transfer resistance on the adsorption rate in a liquid phase The effect of external mass transfer resistance on the adsorption rate in a liquid phase Piątkowska Sylwia author Gwadera Monika author Chair of Chemical and Process Engineering, Faculty of Chemical Engineering and Technology, Cracow University of Technology Instytut Inżynierii Chemicznej i Procesowej, Wydział Inżynierii i Technologii Chemicznej, Politechnika Krakowska Correspondence to: Sylwia Piątkowska Correspondence to: Monika Gwadera mgwadera@chemia.pk.edu.pl 22 03 2018 Volume 3 Year 2018 (115) 2018 79 90 Copyright © 2018 2018 <div id="cke_pastebin" style="text-align: justify;"> The paper presents the results of studies on the adsorption of a dye from a water solution on activated carbon. An activated carbon with the best adsorption properties for the dye used in the studies was selected experimentally. The equilibrium and kinetic measurements for the selected system were conducted. Constants of linear, Langmuir and Freundlich isotherms were determined. The obtained results have shown that increasing the flow rate of the solution in an adsorber results in increasing the adsorption rate.</div>