The College of Education for Pure Sciences at the University of Karbala discussed a master’s thesis dealing with the removal of Indigo carmine and Malachite green dyes from their aqueous solutions using spinel-type MnFe2O4 and MnFe2O4-MgO nanocomposite oxides as adsorbent surfaces. The study aimed to prepare two spinel catalysts, MnFe2O4 and MnFe2O4-MgO superimposed spinel catalysts, and characterize them using FT-IR, XRD, SEM techniques, and study the optimal conditions for the adsorption process such as (equilibrium time, adsorbent surface weight, dye concentration, temperature, ionic strength, pH function). The study reached many results, including that the spectral studies of the two prepared diamond surfaces are represented by a crystal form of spinel structure type and the invers spinel structure, and showed the possibility of removing toxic dyes from their aqueous solutions, such as Indigo carmine and Malachite green, using the two diamond surfaces. The study recommended the necessity of conducting extensive studies for the susceptibility of the two spinel compounds, MnFe2O4 and MnFe2O4-MgO used in the research, to many organic and inorganic pollutants.
