الملخص

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