▎ 摘　　要

In spite of fundamental investigations about the preparation of anatase-graphene based photocatalysts for contaminant degradation, the photoreactor design for wastewater treatment under solar irradiation, still remained as unsolved which needs considering the facile decoration, mechanical reliability and economy. In the present work, anatase-graphene nanocomposites prepared with seven different procedures, were immobilized onto the mullite based ceramic supports fabricated by extrusion as rods and examined in wastewater recovery contaminated by cationic dye in the batch and dynamic system with rapid recirculation rate, 430 ml min(-1), to ensure keeping the activity in the appropriate level. The factors affected the degradation yield included photocatalytic composite, titanium resource, support calcination temperature and wastewater circulation flow rate. It was shown that the TiO2-graphene oxide nanocomposite decorated onto the rods via aminopropyltrimethoxysilane, exhibits the appropriate activity, in comparison to that produced by anatase-reduced graphene oxide dip coating. The photocatalytic degradation was extremely improved, up to 90%, through the support calcination at 1100 degrees C in which the mullite was formed and pore size was distributed in the range of 10-100 nm. The screen of compressive strength data was performed by the normal and Weibull distributions to analyze the reliability of fabricated nano-porous mullite support. Based on the obtained statistical information, the calcination of support at mentioned temperature is proposed as a reliable condition to reinforce the ceramic rods, 10 MPa. The fabricated support not only is mechanically reliable but also is cost-effective, economically.