Journal of South China University of Technology (Natural Science Edition) ›› 2015, Vol. 43 ›› Issue (3): 137-142.doi: 10.3969/j.issn.1000-565X.2015.03.020

• Environmental Science & Technology • Previous Articles     Next Articles

Degradation of Acetaminophen by Fe2+ -Activated Peroxymonosulfate Oxidation

Guan Xiao-hong Xin Xiao-yan Gao Nai-yun Tan Chao-qun Zhuang Zhen-zhen   

  1. State Key Laboratory of Pollution Control and Resource Ｒeuse，Tongji University，Shanghai 200092，China
  • Received:2014-05-14 Revised:2014-07-14 Online:2015-03-25 Published:2015-02-10
  • Contact: 高乃云(1949-)，女，教授，博士生导师，主要从事饮用水处理技术研究． E-mail:gaonaiyun@sina.com
  • About author:关小红(1977-)，女，教授，博士生导师，主要从事水污染控制研究． E-mail: guanxh@ tongji． edu． cn
  • Supported by:
    Supported by the National Science and Technology Major Project (2012ZX07403-001)，the Research and Development Project of Ministry of Housing and Urban-Ｒural Construction of China(2009-K7-4)and the National Natural Science Foundation of China(51178321)

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Abstract: This paper deals with the degradation of acetaminophen by Fe2+-activated peroxymonosulfate( PMS) in aqueous solution. By investigating the effect factors,reaction kinetics,mineralization and radical( SO-·4or OH·)identification,two degradation stages,one is fast and the other is slow,are discovered,and an optimal concentration ratio of PMS to Fe2+,namely 1. 5∶1,is determined for achieving the highest degradation rate. Moreover,it is found that the optimal pH value is 5. 0,and that relatively high PMS and Fe2+dosages help achieve a mineralization rate more than 55%. ESR test indicates that SO-·4 and OH·appear in the degradation process and play their important roles; and that SO-·4 and OH·appear after 3 min from the reaction initiation,then the quantity of OH·decreases and then vanishes,so that SO-·4 is the main radical for the slow degradation stage.

Key words: acetaminophen, degradation, bivalent iron, peroxymonosulfate, radical verification, kinetics

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