可见光催化剂BiVO_4降解废水中直接耐酸大红4BS  

Degradation of Direct Acid Proof Scarlet 4BS in Wastewater by Photocatalyst BiVO_4 under Visible Light

作　　者：安风霞[1] 陈建林[1] 齐凯[1] 张丽[1] 

机构地区：[1]南京大学环境学院污染控制与资源化国家重点实验室,江苏南京210093

出　　处：《化工环保》2009年第6期500-503,共4页Environmental Protection of Chemical Industry

摘　　要：以直接耐酸大红4BS模拟染料废水为目标污染物,研究了BiVO_4对直接耐酸大红4BS(简称4BS)的吸附效果以及废水初始质量浓度、废水pH和BiVO_4的加入量对光催化降解效果的影响。实验结果表明:当废水初始质量浓度为40 mg/L、废水pH为6.38、BiVO_4加入量为1.0g/L时,4BS的降解率可达98.9%;BiVO_4重复使用5次后4BS的降解率可达80.0%以上;COD的变化趋势说明4BS被催化剂吸附和光催化降解的过程是循序渐进的。Using the simulated dye wastewater, the adsorption effect of direct acid proof scarlet 4BS on BiVO4 was studied, and the effects of the wastewater initial mass concentration, the wastewater pH and the BiVO4 dosage on the photocatalytic degradation were investigated. The experimental results show that： The degradation rate of 4BS is 98.9% when its initial mass concentration is 40 mg/L, the wastewater pH is 6.38 and the BiVO4 dosage is 1.0 g/L; After the BiVO4 is reused for 5 times, the degradation rate of 4BS is still over 80.0% ; The varying of COD incarnates that the adsorption and photocatalytic degradation of 4BS on the photocatalyst BiVO4 are progressive and gradual.

关 键 词：光催化 可见光 钒酸铋 染料 直接耐酸大红 废水处理 

分 类 号：X703.1[环境科学与工程—环境工程]