臭氧对8种磺胺类抗生素降解效果研究
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摘要
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).
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).
引文
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[2]金磊,姜蕾,韩琪,等.华东地区某水源水中13种磺胺类抗生素的分布特征及人体健康风险评价[J].环境科学,2016,37(7):2515-2521.
[3]鲍晓磊,强志民,贲伟伟,等.磁性纳米复合材料CoFeM48对水中磺胺类抗生素的吸附去除研究[J].环境科学学报,2013,33(2):401-407.
[4]李军,张蓬,鞠茂伟,等.水中磺胺二甲基嘧啶与ROS的光氧化反应动力学与转化途径[J].科学通报,2016,61(13):1445-1452.
[5]丁惠君,吴亦潇,钟家有,等.两种介体物质在漆酶降解磺胺类抗生素中的作用[J].中国环境科学,2016,36(5):1469-1475.
[6]Zhu WY,Sun FQ,Goei R,et al.Facile Fabrication of RGO-WO3Composites for Effective Visible Light Photocatalytic Degradation of Sulfamethoxazole[J].Appl.Catal.B:Environ.,2017,207:93-102.
[7]???,???,Seo,Gyutae.Degradation of Sulfonamide Antibiotic Substances by Ozonation:An Experimental and Computational Approach[J].J.Korean Soc.Environ.Eng.,2014,36:442-450.
[8]Wan Z,Wang JL.Degradation of Sulfamethazine Antibiotics using Fe3O4-Mn3O4 Nanocomposite as a Fenton-Like Catalyst[J].J.Chem.Technol.Biot.,2017,92:874-883.
[9]Zhou T,Wu XH,Mao J,et al.Rapid Degradation of Sulfonamides in a Novel Heterogeneous Sonophotochemical Magnetite-Catalyzed Fenton-like(US/UV/Fe3O4/Oxalate)system[J].Appl.Catal.B:Environ.,2014,160:325-334.
[10]Gaffney VD,Cardoso VV,Benoliel MJ,et al.Chlorination and Oxidation of Sulfonamides by Free Chlorine:Identification and Behaviour of Reaction Products by UPLC-MS/MS[J].J.Environ.Manage.,2016,166:466-477.
[11]Yu H,Chen JW,Xie HB,et al.Ferrate(VI)Initiated Oxidative Degradation Mechanisms Clarified by DFT Calculations:a Case for Sulfamethoxazole[J].Environ.Sci.Proc.Impacts.,2017,19:370-378.