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研究了竹炭/TiO2光催化剂在紫外光照射下去除Cr(VI)的特性,探索了催化剂用量、Cr(VI)的初始质量浓度、光催化时间、催化剂焙烧温度及溶液酸度对Cr(VI)去除率的影响,确定了竹炭/TiO2光催化剂处理含铬废水的最佳条件.结果表明:反应条件在pH值为0.5,光催化反应时间大于30min,催化剂的加入量为3g/800ml时效果最好,建议使用在450℃下进行焙烧2h的光催化剂,可以采用适当延长反应时间的方法来提高Cr(VI)离子的降解率.图6,参9.
The removal of Cr (VI) from bamboo charcoal / TiO2 photocatalyst under ultraviolet irradiation was studied. The effects of catalyst dosage, initial mass concentration of Cr (VI), photocatalytic time, catalyst calcination temperature and solution acidity on Cr The optimum conditions for the treatment of chromium-containing wastewater with bamboo charcoal / TiO2 photocatalyst were determined.The results showed that the best reaction conditions were pH 0.5, photocatalytic reaction time 30min and catalyst dosage 3g / 800ml , It is recommended to use a photocatalyst calcined at 450 ℃ for 2h, and the degradation rate of Cr (VI) ions can be increased by appropriately prolonging the reaction time.