Design and synthesis of magnetic MOF for the removal of erythrosine B dye using design of experiment

Dye and textile industries are suffering from pollutant issues from industrial wastewater. Due to attempts made by textile industries for producing diverse products, using different chemical compounds, especially new dyes, and creating complex wastewater are unavoidable. To date, various physical and chemical processes such as chemical precipitation, adsorption, electrocoagulation, etc. were used to treat relevant wastewater. Physicochemical systems such as surface adsorption have attained many interests, due to the unique physical and chemical properties of these nanoparticles compared to the balk type. Among different nanomaterials, magnetic nanomaterials were received the highest interest due to the facile separation by an external magnetic field and their high capacity.  Iron oxide nanoparticles, specially super-magnetic or magnetic Fe3O4 nanoparticles, have the highest usage. Considering the specific properties of magnetic MOF, the physical and structural features of the synthesized adsorbent were investigated by BET, XRD, FTIR, SEM, and TEM techniques. The effect of different parameters such as pH, the concentration of erythrosine B dye, adsorbent weight, contact time, and the temperature was studied to determine the thermodynamic parameters, equilibrium isotherms, kinetic of the adsorption process, and finally their application on the adsorption of erythrosine B dye.