We are doing a project on adsorption of hexavalent chromium using agricultural wastes. I would want to generate adsorption isotherms for our data. Would I be able to know the procedure for the generation of adsorption isotherms.
The adsorption isotherm cannot be generated by software. They are specific for each adsorption system in well defined experimental conditions. So, it is necessary to obtain experimental results and then to represent the isotherms.
It is simple and easy. There is a number of articles might be help you in your project. For example: article entitled: Isotherm and kinetic sorption of some lanthanides and iron from aqueous solution by aluminum silicotitante exchanger
The adsorption isotherm cannot be generated by software. They are specific for each adsorption system in well defined experimental conditions. So, it is necessary to obtain experimental results and then to represent the isotherms.
As Laura says, isotherms are characteristic of each system, but the information or data that you obtained can be processed with a soft (Origin or another) that allows adjusting the values obtained to the different isotherms with the corresponding statistical analysis.
To generate an adsorption isotherm for your data, you can use OriginLab software version 8.5 or higher. Using this software you can get linear and non-linear fitting for the isotherm models.