Version 1
: Received: 11 December 2023 / Approved: 11 December 2023 / Online: 12 December 2023 (04:45:51 CET)
How to cite:
Ezzati, R. Rethinking the Use of Linear Forms of the Langmuir Isotherm in Adsorption Modeling to Calculate Langmuir Isotherm Parameters. Preprints2023, 2023120756. https://doi.org/10.20944/preprints202312.0756.v1
Ezzati, R. Rethinking the Use of Linear Forms of the Langmuir Isotherm in Adsorption Modeling to Calculate Langmuir Isotherm Parameters. Preprints 2023, 2023120756. https://doi.org/10.20944/preprints202312.0756.v1
Ezzati, R. Rethinking the Use of Linear Forms of the Langmuir Isotherm in Adsorption Modeling to Calculate Langmuir Isotherm Parameters. Preprints2023, 2023120756. https://doi.org/10.20944/preprints202312.0756.v1
APA Style
Ezzati, R. (2023). Rethinking the Use of Linear Forms of the Langmuir Isotherm in Adsorption Modeling to Calculate Langmuir Isotherm Parameters. Preprints. https://doi.org/10.20944/preprints202312.0756.v1
Chicago/Turabian Style
Ezzati, R. 2023 "Rethinking the Use of Linear Forms of the Langmuir Isotherm in Adsorption Modeling to Calculate Langmuir Isotherm Parameters" Preprints. https://doi.org/10.20944/preprints202312.0756.v1
Abstract
The Langmuir isotherm is a widely used model for analyzing adsorption equilibrium data. This study evaluated the efficiency and accuracy of all four linear forms of the Langmuir isotherm and its non-linear form using 67 experimental data sets selected from the literature. The results showed that only if all four linear forms simultaneously show high accuracy, then the non-linear form also shows high accuracy, and therefore it can be said that the process probably follows the Langmuir isotherm. On the contrary, when at least one of the four linear forms of the Langmuir isotherm has low accuracy, it means that the non-linear form also has low accuracy, and it can be concluded that this process does not follow the Langmuir isotherm. This research suggests that all four linear forms of the Langmuir isotherm should be evaluated simultaneously to conclude whether the studied system follows the Langmuir isotherm or not. In other words, relying on only one of the four linear forms of the Langmuir isotherm to model adsorption and calculate the Langmuir constant and maximum adsorption capacity is an incomplete approach, contrary to the conventional approach.
Keywords
Adsorption; Langmuir isotherm; linear forms; Non-linear form; Langmuir constant
Subject
Chemistry and Materials Science, Surfaces, Coatings and Films
Copyright:
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.
