Removal of Bismarck Brown G Dye from Simulated Industrial Wastewaters over (Co, Ni)3O4/Al2O3 Co- Catalyst


The spinel co- catalyst (Co, Ni)3O4/Al2O3 was prepared using co-precipitation method. The produced material then was calcinated at temperature (600 ᵒC) for 4 hours. The resultant catalysts were characterized using powder X-rays diffraction (PXRD), Fourier transform infrared spectroscopy (FTIR). The photocatalytic activity and the adsorption ability of these materials were investigated by following photocatalytic degradation and adsorption of Bismarck braown G dyes (BBG) from simulated industrial wastewaters. Different reaction parameters and conditions were undertaken, including studying the effect of pH of the solution, the amount of the used catalyst, and the effect of temperature. In addition to that both of Frundlich and Langmuir adsorption isotherms were studied. From the obtained results in this study, it was found that the best efficiency for BBG removal was around 92.4%. This was achieved at optimal reaction conditions which were PH =3, weight of the catalyst 0.2g and time of reaction was one hour.