According to the data in Table (7), the correlation coefficients (R²) of all three adsorption isotherms of Langmuir, Freundlich and Temkin and compliance are close to one, but the correlation coefficient of Freundlich absorption is the highest. This indicates that the isotherm was the dominant isotherm of the Freundlich. This means that the adsorption process has been multi-layered on heterogeneous surfaces, as a result, this model describes experimental data well. Therefore, the mechanism of adsorption of curcumin on the nanocomposite of the magnetic metal-organic framework and a filling of the available absorbent surface of curcumin.