四氧化三钴活化过一硫酸盐降解布洛芬的研究

Degradation of Ibuprofen by Cobalt Oxide Activated Peroxomonosulfate

采用水热-高温煅烧法合成四氧化三钴,用于活化过一硫酸盐(PMS)以去除水中的布洛芬(IBU)。探讨四氧化三钴投加量、PMS浓度、初始pH和IBU质量浓度对IBU降解的影响。IBU的降解遵循一级反应动力学。当IBU质量浓度为30 mg·L^(-1),Co_(3)O_(4)投加量为0.15 g·L^(-1),PMS投加量2.5 mM,pH为7时,反应90 min后,IBU的降解率可达到99.9%,准一级反应速率常数为0.06 min^(-1)。结果表明,Co_(3)O_(4)/PMS体系可以高效降解水体中的IBU,应用前景良好。

Co_(3)O_(4) was successfully fabricated through hydrothermal-high temperature calcination method.The Co_(3)O_(4) was applied to activate peroxymonosulfate(PMS)to oxidize IBU.The degradation of IBU followed pseudo firstorder reaction kinetics.Effects of the Co_(3)O_(4) dosage,PMS concentration,initial IBU concentration and as well as initial pH on the degradation of IBU were investigated.After 90 minutes,the IBU removal and constant of pseudofirst equation was 99.9%and 0.06 min^(-1),respectively,when Co_(3)O_(4) dosage was 0.15 g·L^(-1),PMS concentration was 2.5 mM,initial IBU concentration was 30 mg·L^(-1)and initial pH was 7.Co_(3)O_(4)/PMS system could effectively degrade IBU in water and had a good application prospect.