Journal of South China University of Technology (Natural Science Edition) ›› 2010, Vol. 38 ›› Issue (8): 147-152.doi: 10.3969/j.issn.1000-565X.2010.08.028

• Environment Science & Technology • Previous Articles    

Degradation of Tetracycline Hydrochloride in Aqueous Solution by Ultrasonic Irradiation

Ma Yan  Gao Nai-yun  Yao Juan-juan  Guo Hong-guang  Zhang Ke-jia   

  1. State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, Shanghai 200092, China
  • Received:2009-12-04 Revised:2010-03-03 Online:2010-08-25 Published:2010-08-25
  • Contact: 高乃云（1950-），女，教授，博士生导师，主要从事水处理理论与技术研究．E-mail：gaonaiyun@sina．com E-mail:my041203@126．com
  • About author:马艳（1986-），女，博士生，主要从事水处理理论与技术研究．
  • Supported by:

    国家科技重大专项资助项目（2008ZX07421-002,2008ZX07421.004）;国家“863”计划项目（2008AA06A412）;住房和城乡建设部研究项目（2009-K7-4）

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Abstract:

This paper deals with the ultrasonic degradation of tetracycline hydrochloride （TC.HCl） in aqueous solution and reveals the effects of ultrasonic frequency, ultrasonic power, initial mass concentration of the solution, pH value and anion on the degradation efficiency. The results indicate that （1） with ultrasonic irradiation, TC . HCl in aqueous solution effectively degrades with high speed, which accords with the pseudo first-order reaction model; （2） at a pH value of about 5.60, 88. 17% of 1.00mg/L TC . HCl is decomposed within 20min under the irradiation with 400 kHz and 100 W ultrasonic ; （3） the degradation rate of TC . HCl increases with the increase in ultrasonic power and with the decrease in the initial TC . HCl concentration; （4） the pH value of the solution greatly influences the TC . HCl degradation and the degradation performs well in alkaline condition; and （5） Cl- and SO4 2- slightly inhibit the degradation, while NO3- , HCO3-、 and HPO4 2- accelerate the degradation, especially the latter two.

Key words: tetracycline hydrochloride, ultrasonic degradation, removal, reaction kinetics