2.5. Dye decolorization
To investigate the bleaching process of methylene blue cationic dye, a
solution of methylene blue dye (10 mg / L) was prepared. Collected 100
ml of it as a sample and 0.1 gr of nanocomposite synthesized in the
presence of hydrogen peroxide added and was subjected to ultrasound at
room temperature for certain periods of time. Methylene blue
concentration was measured at different times using a UV-vis light
spectrometer. Finally, using equation (1) percent removal of methylene
blue dye and using equation (2), the adsorption capacity of the magnetic
organic-metallic framework composite was calculated and determined.
(1)
(2)
Where C0 and Ct , initial
concentration of dye solution and concentration of dye solution at time
t, V volume of solution in liters, m the amount of nano
composite (gr) and qt adsorption capacity of
nanocomposite magnetic metal-organic framework in terms (mg.
g-1). Finally, the effect of different parameters on
the removal of methylene blue dye was studied.