【摘要】 对含TiO2 光催化剂的颗粒活性炭 (简称TiO2 /GAC)的吸附和再生性能进行了研究 .TiO2 /GAC对5 0 0～ 70 0 0mg/L苯酚的吸附既符合Langmuir吸附等温式 :q =QMK′C/ (1+K′C) ,式中QM =2 30 1,K′ =1 0 5× 10 -3 ;也符合Freundlich吸附等温式 :q =KCn,式中K =5 18,n =0 435 .说明吸附较易进行 ;TiO2 /GAC使节能、无害化再生方法 :光照 -水洗再生法再生活性炭成为可能 ,其吸附再生率大大高于普通活性炭 ,且不产生二次污染 .对光催化降解再生率的实验结果表明 ,TiO2 /GAC中的TiO2 与GAC的结合力强 ,在光照 -水洗再生过程中其光催化活性保持较好更多还原

【Abstract】 The adsorption and regeneration properties of the granular activated carbon containing TiO 2 photocatalyst were studied.The adsorption of phenol with concentration of 500 (7?000?mg/L was not only fitted for Langmuir equation: q=Q MK′C/(1+K′C),Q M=230.1,K′= 1.05×10 -3 ,but also fitted for Freundlich equation: q=KC n,K=5.18,n=0.435 ,which means that the adsorption was easy to occur.TiO 2/GAC made the saving-energy?unharmful regeneration method of irradiation-washing(water) possible for the regeneration of granular activated carbon.Its regeneration rate of adsorption was higher than that of ordinary granular activated carbon and no second pollution happened.The results of the rate of photocatalytic degradation regeneration showed that TiO 2 containing in TiO 2/GAC strong combined with GAC.During the regeneration process with irradiation-washing(water) method,its photocatalytic property kept well.更多还原