Ultrasound enhanced activation of peroxydisulfate by activated carbon fiber for decolorization of azo dye

  • Tianyin Huang
  • Ke Zhang
  • Yajie Qian
  • Cong Fang
  • Jiabin Chena
Research Article


Activated carbon fiber (ACF) has become an emerging activator for peroxydisulfate (PDS) to generate sulfate radical (SO4•−). However, the relative low activation efficiency and poor contaminant mineralization limited its widespread application. Herein, ultrasound (US) was introduced to the ACF activated PDS system, and the synergistic effect of US and ACF in PDS activation and the enhancement of contaminant mineralization were investigated. The synergistic effect of US and ACF was observed in the PDS activation to decolorize orange G (OG). The decolorization efficiency increased with increasing ACF loading and US power, and PDS/OG ratio from 1 to 40. The activation energy was determined to be 24.065 kJ/mol. The radical-induced decolorization of OG took place on the surface of ACF, and both SO4•− and hydroxyl radical (OH) contributed to OG decolorization. The azo bond and naphthalene ring on OG were destructed to other aromatic intermediates and finally mineralized to CO2 and H2O. The introduction of US in the ACF/PDS system significantly enhanced the mineralization of OG. The combination of US and PDS was highly efficient to activate PDS to decolorize azo dyes. Moreover, the introduction of US remarkably improved the contaminant mineralization.


Peroxydisulfate Activated carbon fiber Ultrasound Azo dye Mineralization 



We sincerely thank the National Natural Science Foundation of China (51478283, 51509175) and Xiamen Urban Water Environmental Eco-Planning and Remediation Engineering Research Center (XMERC) for financially supporting this work.


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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  • Tianyin Huang
    • 1
  • Ke Zhang
    • 1
  • Yajie Qian
    • 2
  • Cong Fang
    • 1
  • Jiabin Chena
    • 1
    • 3
  1. 1.School of Environmental Science and EngineeringSuzhou University of Science and TechnologySuzhouPeople’s Republic of China
  2. 2.College of Environmental Science and EngineeringDonghua UniversityShanghaiPeople’s Republic of China
  3. 3.Xiamen Urban Water Environmental Eco-Planning and Remediation Engineering Research Center (XMERC)XiamenChina

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