الفهرس | Only 14 pages are availabe for public view |
Abstract configuration, studying the number and diameter of glass tubes to raise UV penetration and the efficiency of the reactor. The results show 96% of MB removal was obtained using 3 tubes with an external diameter of 26 mm. This was followed by the application of optimal operating condition obtained in the treatment of cationic, ionic and neutral dyes to represen residues under a wider range. The results showed that the proposed treatment capacity of these dyes varie as follows: neutral pigment (90%)> cationic (60%)> anionic (45%). Applie to realistic samples of two different dyes under ideal conditions, the averag treatment ratio with chemical oxygen demand (COD) removal was 66%. As for the improving of titanium dioxide, different combinations o Nano-sized catalysts were prepared by loading of titanium dioxide on reduc graphene oxide (RGO) or activated carbon (AC) by hydrothermal method t improve its photocatalysis. These compounds were characterized b scanning electron microscopy (SEM), x-ray diffraction (XRD). Th comparison was performed using TiO2, TiO2/RGO (5% weight ratio) an TiO2/AC (5% weight ratio) under optimum operating conditions obtaine previously. It was found that all of these combinations positively affected th removal of the MB, but at varying rates as follows: TiO2/AC (95%) TiO2/RGO (72%) > TiO2 (65%). This is due to an increase in the surfac area of the TiO2/AC (146 m2/gm), compared to TiO2/RGO (102 m2/gm) an TiO2 (52 m2/gm). |