臭氧对8种磺胺类抗生素降解效果研究

Study on Degradation Efficiency of Eight Sulfonamides Antibiotics in Water by Ozonation

采用臭氧氧化法降解水溶液中8种磺胺类抗生素,分析了臭氧作用时间对8种磺胺类抗生素的降解影响,并对臭氧氧化去除水中抗生素的反应动力学进行了研究。结果表明,臭氧氧化法对SIZ、SN、SCPD、SDZ、SMX可全部去除,对SMR、SG、SA的去除率分别为99.30%、98.19%和98.49%。臭氧氧化法对8种磺胺类抗生素的降解符合一级反应动力学,其反应速率常数为0.054 7～0.121 0 min^(-1)。

The ozone oxidation of eight sulfonamides antibiotics in water was investigated. The effect of ozone on eight sulfonamides antibiotics with different operation time was discussed. And the reaction kinetics of antibiotics ozone oxidation was investigated. Experiments showed that SIZ、SN、SCPD、SDZ、SMX would be decomposed completely.The removal efficiency of SMR、SG and SA could be measure up to 99.30%, 98.19% and 98.49%. The ozonization degradation of eight sulfonamides followed the first-degree reaction model, and the experimental apparent rate constants was between 0.054 7 and 0.121 0 min^-1.