I conducted an adsorption of a solid adsorbent (thiol modified adsorbent) for liquid sorbate (Au(III)), but the result was not fitted to the both Langmuir Isotherm model (R2=0.947) and Freundlich isotherm model (R2=0.888) neither for Temkin isotherm model (R2=0.887). what other isotherm model might be fitted to my data?
Dear Yusran!
Other isotherm model reported for adsorbent-adsorbate interaction may be applied in your studies. Pls see the attached article on use of several isotherm models in such system.
With best regards to Mr. Navneet Randhawa for providing these adsorption isotherms. I think the experimental data may be fitted equally well either to Dubinin–Radushkevich (DR) eqn or Modified Dubinin–Radushkevich (MDR) eqn.........Good luck Dear Yusran.
I think you should try D-R isotherm. It may fit into that.
Try Sips isotherm also so that u can confirm that your data is surely not fitted to langmuir and freundlich isotherm
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