%0 Journal Article
%T KLa Determination Using the Effectiveness-NTU Method: Application to Countercurrent Absorbers in Operation Using Viscous Solvents for VOCs Mass Transfer
%A ¨¦ric Dumont
%J ChemEngineering | An Open Access Journal from MDPI
%D 2019
%R https://doi.org/10.3390/chemengineering3020057
%X In this study, the Effectiveness-NTU method, which is usually applied to heat exchanger design, was adapted to gas¨Cliquid countercurrent absorbers to determine the overall mass transfer coefficient, K La, of the apparatus in operation. It was demonstrated that the ¦Å-NTU method could be used to determine the K La using the Henry coefficient of the solute to be transferred (H VOC), the gas flow-rate (Q G), the liquid flow-rate (Q L), the scrubber volume (V), and the effectiveness of the absorber (¦Å). These measures are calculated from the gaseous concentrations of the solute measured at the absorber inlet (C Gin) and outlet (C Gout), respectively. The ¦Å-NTU method was validated from literature dedicated to the absorption of volatile organic compounds (VOCs) by heavy solvents. Therefore, this method could be a simple, robust, and reliable tool for the K La determination of gas¨Cliquid contactors in operation, despite the type of liquid used, i.e., water or viscous solvents. View Full-Tex
%U https://www.mdpi.com/2305-7084/3/2/57