Use and Misuse of Sorption Kinetic Data: A Common Mistake That Should Be Avoided
Numerical simulation of sorption dynamics showed that the use of data recorded at (or very close to) equilibrium in the search for the kinetic equation that best describes the process frequently leads to incorrect conclusions. Notably, it has been demonstrated that the fit of the adsorption data at...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
SAGE Publishing
2012-03-01
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| Series: | Adsorption Science & Technology |
| Online Access: | https://doi.org/10.1260/0263-6174.30.3.217 |
| _version_ | 1826904956734537728 |
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| author | Silvana Canzano Pasquale Iovino Vincenzo Leone Stefano Salvestrini Sante Capasso |
| author_facet | Silvana Canzano Pasquale Iovino Vincenzo Leone Stefano Salvestrini Sante Capasso |
| author_sort | Silvana Canzano |
| collection | DOAJ |
| description | Numerical simulation of sorption dynamics showed that the use of data recorded at (or very close to) equilibrium in the search for the kinetic equation that best describes the process frequently leads to incorrect conclusions. Notably, it has been demonstrated that the fit of the adsorption data at equilibrium (t/q t versus t) is a straight line irrespective of the sorption kinetics. In order to distinguish pseudo-first-order from pseudo-second-order sorption kinetics, the data near the equilibrium should be omitted from the least-squares fit and the result confirmed by a different method. A straightforward method based on Δ(q t /q e )/Δt versus 1 – q t /q e and versus (1 – q t /q e ) 2 plots is suggested. Some recent papers reporting incorrect sorption kinetic analyses are discussed. |
| first_indexed | 2024-03-07T17:09:34Z |
| format | Article |
| id | doaj.art-29d926fbc595417aac22e01887a20019 |
| institution | Directory Open Access Journal |
| issn | 0263-6174 2048-4038 |
| language | English |
| last_indexed | 2025-02-17T08:20:28Z |
| publishDate | 2012-03-01 |
| publisher | SAGE Publishing |
| record_format | Article |
| series | Adsorption Science & Technology |
| spelling | doaj.art-29d926fbc595417aac22e01887a200192025-01-02T23:11:15ZengSAGE PublishingAdsorption Science & Technology0263-61742048-40382012-03-013010.1260/0263-6174.30.3.217Use and Misuse of Sorption Kinetic Data: A Common Mistake That Should Be AvoidedSilvana CanzanoPasquale IovinoVincenzo LeoneStefano SalvestriniSante CapassoNumerical simulation of sorption dynamics showed that the use of data recorded at (or very close to) equilibrium in the search for the kinetic equation that best describes the process frequently leads to incorrect conclusions. Notably, it has been demonstrated that the fit of the adsorption data at equilibrium (t/q t versus t) is a straight line irrespective of the sorption kinetics. In order to distinguish pseudo-first-order from pseudo-second-order sorption kinetics, the data near the equilibrium should be omitted from the least-squares fit and the result confirmed by a different method. A straightforward method based on Δ(q t /q e )/Δt versus 1 – q t /q e and versus (1 – q t /q e ) 2 plots is suggested. Some recent papers reporting incorrect sorption kinetic analyses are discussed.https://doi.org/10.1260/0263-6174.30.3.217 |
| spellingShingle | Silvana Canzano Pasquale Iovino Vincenzo Leone Stefano Salvestrini Sante Capasso Use and Misuse of Sorption Kinetic Data: A Common Mistake That Should Be Avoided Adsorption Science & Technology |
| title | Use and Misuse of Sorption Kinetic Data: A Common Mistake That Should Be Avoided |
| title_full | Use and Misuse of Sorption Kinetic Data: A Common Mistake That Should Be Avoided |
| title_fullStr | Use and Misuse of Sorption Kinetic Data: A Common Mistake That Should Be Avoided |
| title_full_unstemmed | Use and Misuse of Sorption Kinetic Data: A Common Mistake That Should Be Avoided |
| title_short | Use and Misuse of Sorption Kinetic Data: A Common Mistake That Should Be Avoided |
| title_sort | use and misuse of sorption kinetic data a common mistake that should be avoided |
| url | https://doi.org/10.1260/0263-6174.30.3.217 |
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