Abstract
The research including used anew adsorbent substance collected from sandstorms which arrived to Mosul city to study adsorption of Benzoic acid and some substituted and application of kinetics Models (pseudo first and second order reaction ) Elovich model kinetics and determination of thermodynamic function for adsorption process as well as the probability sticking for acids molecules on surface (S*)and the appareant activation energy , the isothermic constants were determined for frendlich ,Langmir,Tempkin at different temperature and factors affecting on adsorption process ,the results gives indicates that the physical mechanism which predominate and some times physical and chemical the adsorption was increased and desorption decreased ,this process non spotonous and need lower energy to happened
