TiO_2光催化降解废水中的甲硝唑  

Photocatalytic Degradation of Metronidazole in Wastewater by TiO_2

作　　者：韩木先[1] 王惟丽[1] 

机构地区：[1]湖北师范学院化学与环境工程学院,湖北省黄石市磁湖路11号435002

出　　处：《光谱实验室》2013年第1期280-284,共5页Chinese Journal of Spectroscopy Laboratory

基　　金：湖北省教育厅优秀中青年科技创新团队项目(T201007)

摘　　要：以低浓度甲硝唑为模型污染物,研究TiO_2光催化降解甲硝唑废水。以5.0mL60μmol/L的甲硝唑溶液为降解目标,考察了Cu^(2+)浓度、溶液pH值、光照时间、TiO_2用量等对甲硝唑降解率的影响。实验表明,当初始浓度为60μmol/L的甲硝唑溶液、500mg/L H_2O_2溶液、225μmol/L的Cu^(2+)溶液均取5.0mL参加反应,用硫酸调节pH约为3.0,当TiO_2用量为4.12mg、光照反应时间为75min时,平均降解效果可达91.87%。Low concentration metronidazole solutions were used as model pollutant photocatalytic degradation of metronidazole in wastewater by TiO_2 photocatalyst was invstigated.With 5.0mL 60μmol/L metronidazole solution as degradation target,the influences of Cu^（2＋） concentration,pH value,irradiation time,TiO_2 dosage on degradation rate of metronidazole were studied.The results showed that the amounts of 60μmol/L initial concentration of metronidazole solution,50mg/L H_2O_2, 225μmol/L Cu^（2＋） were respectively taken 5.OmL to react,finally,the average degradation rate was up to 91.87%with experimental conditions such as pH≈3.0,irradiation time of 75min,TiO_2 dosage of 4.12mg.

关 键 词：甲硝唑 光催化降解 二氧化钛 废水 

分 类 号：O657.32[理学—分析化学]