Journal of Jilin University(Earth Science Edition) ›› 2021, Vol. 51 ›› Issue (3): 887-897.doi: 10.13278/j.cnki.jjuese.20200119

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Degradation of Ofloxacin by Thermally Activated Persulfate and Its Response Surface Optimization

Ren Hejun, Lin Wenwen, Lu Song, Li Tingting, Zhou Rui   

  1. Key Laboratory of Groundwater Resource and Environment of Ministry of Education (Jilin University)/College of New Energy and Environment, Jilin University, Changchun 130021, China
  • Received:2020-05-12 Online:2021-05-26 Published:2021-06-07
  • Supported by:
    Supported by the National Natural Science Foundation of China (41302184) and Project of Ecological Environment Bureau of Shenzhen Municipality (2019-01-0310-B1)

Abstract: In order to explore the treatment of ofloxacin (OFX) pollutants by thermally activated persulfate(PS) technology in water, the effects of the reaction temperature, initial pH of the system, initial concentration of PS, and the initial concentration of OFX on its degradation were studied. And based on the single factor experiment, the response surface optimization experiment was carried out by selecting four factors: Reaction time, initial pH of the system, initial concentration of PS, and the initial concentration of OFX. The results showed that the optimal reaction conditions were as follows: The reaction temperature was 60 ℃, 4.0 mmol/L PS, pH=4.7, 0.03 mmol/L OFX, and the degradation rate of OFX was 81.29% in 60 minutes. All the four factors had an effect on the degradation of OFX, and the significance of its effect from large to small was the reaction time, initial concentration of OFX, initial concentration of PS, and the initial pH. The degradation rate of OFX under optimal conditions was 93.78%, which was basically consistent with the best predicted result of 95.00%, indicating that the model was reliable and effective.

Key words: ofloxacin, thermal activated, persulfate, response surface optimization

CLC Number: 

  • X523
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[1] Liu Na, Zhang Pengpeng, Ding Longzhen, Chen Hong, Jiao Xinqian. Nitrogen-Doped Carbon Material Activate Persulfate to Degrade 4-Chlorophenol [J]. Journal of Jilin University(Earth Science Edition), 2020, 50(4): 1173-1181.
[2] Liu Na, Ding Jiyang, Yu Qingmin, Zhang Sida, Zhao Hongjun, Lü Chunxin. Degradation of 1,4-Dioxane in Groundwater by Ultrasound Enhanced ZVI-Activated Persulfate Oxidation Process [J]. Journal of Jilin University(Earth Science Edition), 2018, 48(6): 1831-1837.
[3] Zhang Fengjun, Liu Zhehua, Su Xiaosi, Lü Cong, Liu Jialu. Effects of Soil Types and Composition on Oxidative Degradation of Volatile Chlorinated Hydrocarbons by Thermally Activated Persulfate [J]. Journal of Jilin University(Earth Science Edition), 2018, 48(4): 1212-1220.
[4] Liu Na, Wang Liu, Qiu Hua, Alberto Bento Charrua, Wang Hang, Wang Rui. Biochar Catalyzed Persulfate Decoloration of Azo Dye Acid Orange 7 [J]. Journal of Jilin University(Earth Science Edition), 2014, 44(6): 2000-2009.
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