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Performance Test of a Novel Tubular V-Collector for Phenol Removal from Aqueous Solutions over TIO -Activated Carbon Composites

The novel tubular V-collector (TVC) with the flexible reflecting angles was constructed and evaluated for phenol removal from aqueous solutions over TiO -activated carbon (Ti/AC) composites. The composites 2 consisted of TiO photocatalyst and activated carbon adsorbent were prepared by mixing TiO (Degussa P-25) 22 sol and activated carbon powder and followed by calcination at 400 °C for one hour. The TVC reactor was designed such that the V-shape reflectors have adjustable reflecting angles and the photon source could be obtained either from sunlight or artificial lamps. Reflecting intensity measurements of the TVC showed that the optimum reflecting angles under black light lamps and the sunlight irradiation were achieved at 90° and 150°, respectively. The results also show that the phenol could effectively be removed through simultaneous adsorption and photocatalysis. Typically within the residence time of 6 minutes, 30 ppm of phenol solution continuously could be removed completely from aqueous solution for more than 12 hours. Additionally, the effects of inlet phenol concentration, flow rates of phenol solutions and composition of the Ti/AC composites on the phenol removal were also studied.