SCI和EI收录∣中国化工学会会刊

Chin.J.Chem.Eng. ›› 2018, Vol. 26 ›› Issue (9): 1896-1903.DOI: 10.1016/j.cjche.2018.01.007

• Catalysis, Kinetics and Reaction Engineering • Previous Articles     Next Articles

Membrane enhanced COD degradation of pulp wastewater using Cu2O/H2O2 heterogeneous Fenton process

Hongjia Zhou, Lin Kang, Ming Zhou, Zhaoxiang Zhong, Weihong Xing   

  1. State Key Laboratory of Materials-Oriented Chemical Engineering, National Engineering Research Center for Special Separation Membrane, Nanjing Tech University, Nanjing 210009, China
  • Received:2017-10-09 Revised:2017-12-06 Online:2018-10-17 Published:2018-09-28
  • Contact: Weihong Xing,E-mail address:xingwh@njtech.edu.cn
  • Supported by:

    Supported by the Prospective Research Project of Jiangsu Province (BY2014005-06).

Membrane enhanced COD degradation of pulp wastewater using Cu2O/H2O2 heterogeneous Fenton process

Hongjia Zhou, Lin Kang, Ming Zhou, Zhaoxiang Zhong, Weihong Xing   

  1. State Key Laboratory of Materials-Oriented Chemical Engineering, National Engineering Research Center for Special Separation Membrane, Nanjing Tech University, Nanjing 210009, China
  • 通讯作者: Weihong Xing,E-mail address:xingwh@njtech.edu.cn
  • 基金资助:

    Supported by the Prospective Research Project of Jiangsu Province (BY2014005-06).

Abstract: Both activity and stability of the catalyst can be improved in heterogeneous Fenton reaction, in particular, with no limitation for the working pH and no production of the sludge. In this work, a combination of catalyst Cu2O and pore-channel-dispersed H2O2 is proposed to treat the pulp wastewater. Degradation degree of CODs in the wastewater was up to 77% in the ceramic membrane reactor using Cu2O powder (2.0 g·L-1) and membranefeeding H2O2 (0.8 ml·L-1) within 60 min. Evolution of ·OH radical formation in the advanced oxidation process was analyzed with a fluorescent method. Utilization efficiency of H2O2 was successfully enhanced by 10% with the membrane distributor. Further on, the catalyst recyclability was evaluated in a five-cycle test. The concentration of copper ions being dissolved in the treated water was monitored with ICP. After Cu2O/H2O2 (membrane) treatment the effluent is qualified to discharge with COD concentration lower than 15 mg·L-1 with regard to the national standard GB25467-2010.

Key words: Pulp wastewater, Heterogeneous Fenton, Membrane, Cu2O, Advanced oxidation

摘要: Both activity and stability of the catalyst can be improved in heterogeneous Fenton reaction, in particular, with no limitation for the working pH and no production of the sludge. In this work, a combination of catalyst Cu2O and pore-channel-dispersed H2O2 is proposed to treat the pulp wastewater. Degradation degree of CODs in the wastewater was up to 77% in the ceramic membrane reactor using Cu2O powder (2.0 g·L-1) and membranefeeding H2O2 (0.8 ml·L-1) within 60 min. Evolution of ·OH radical formation in the advanced oxidation process was analyzed with a fluorescent method. Utilization efficiency of H2O2 was successfully enhanced by 10% with the membrane distributor. Further on, the catalyst recyclability was evaluated in a five-cycle test. The concentration of copper ions being dissolved in the treated water was monitored with ICP. After Cu2O/H2O2 (membrane) treatment the effluent is qualified to discharge with COD concentration lower than 15 mg·L-1 with regard to the national standard GB25467-2010.

关键词: Pulp wastewater, Heterogeneous Fenton, Membrane, Cu2O, Advanced oxidation