Next Article in Journal
Specifically Designed Ionic Liquids—Formulations, Physicochemical Properties, and Electrochemical Double Layer Storage Behavior
Previous Article in Journal
Parameter Estimation Strategies in Thermodynamics
Article Menu
Issue 2 (June) cover image

Export Article

Open AccessArticle

KLa Determination Using the Effectiveness-NTU Method: Application to Countercurrent Absorbers in Operation Using Viscous Solvents for VOCs Mass Transfer

IMT Atlantique, GEPEA, UMR CNRS 6144, F-44307 Nantes CEDEX, France
ChemEngineering 2019, 3(2), 57; https://doi.org/10.3390/chemengineering3020057
Received: 4 February 2019 / Revised: 1 March 2019 / Accepted: 24 May 2019 / Published: 1 June 2019
  |  
PDF [3797 KB, uploaded 14 June 2019]
  |  

Abstract

In this study, the Effectiveness-NTU method, which is usually applied to heat exchanger design, was adapted to gas–liquid countercurrent absorbers to determine the overall mass transfer coefficient, KLa, of the apparatus in operation. It was demonstrated that the ε-NTU method could be used to determine the KLa using the Henry coefficient of the solute to be transferred (HVOC), the gas flow-rate (QG), the liquid flow-rate (QL), the scrubber volume (V), and the effectiveness of the absorber (ε). These measures are calculated from the gaseous concentrations of the solute measured at the absorber inlet (CGin) and outlet (CGout), respectively. The ε-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 KLa determination of gas–liquid contactors in operation, despite the type of liquid used, i.e., water or viscous solvents. View Full-Text
Keywords: absorption; mass transfer; heat exchanger; scrubber; effectiveness-NTU method absorption; mass transfer; heat exchanger; scrubber; effectiveness-NTU method
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Dumont, É. KLa Determination Using the Effectiveness-NTU Method: Application to Countercurrent Absorbers in Operation Using Viscous Solvents for VOCs Mass Transfer. ChemEngineering 2019, 3, 57.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
ChemEngineering EISSN 2305-7084 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top