Evaluation of sulphate adsorption by Nanostructure LDH

In This study, nano structure of LDH with molar ratio 2:1 and 3:1 was synthesized using process of coprecipitation of salt magnesium nitrate, Aluminium nitrate. In buffer medium of sodium carbonat and sodium hydroxide. The properties of structure and morphological of LDH were investigated using XRD, SEM and FTIR. The results show that some properties in LDH such as layered structure, surface Area is high and loading of anion and ion exchange, make it useful for adsorption of anionic pigments. In our study, adsorption kinetic and equilibirium of adsorption sulphate were mentioned. Results show that at this process, equilibirium time is 90min (amount of adsorption 30.22 gr/gr adsorbent), pH average and amount of adsorbent 0.5 gr. as well as later of conclusion with kinetic and isotherm models, pseudo first kinetic model and langmiur model is selected.