SCI和EI收录∣中国化工学会会刊

中国化学工程学报 ›› 2022, Vol. 45 ›› Issue (5): 133-142.DOI: 10.1016/j.cjche.2021.03.050

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Catalytic decomposition and mass transfer of aqueous ozone promoted by Fe-Mn-Cu/γ-Al2O3 in a rotating packed bed

Weizhou Jiao1, Xingyue Wei1,2, Shengjuan Shao1, Youzhi Liu1   

  1. 1 Shanxi Province Key Laboratory of Higee-Oriented Chemical Engineering, National Demonstration Center for Experimental Comprehensive Chemical Engineering Education, North University of China, Shanxi 030051, China;
    2 Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
  • 收稿日期:2021-01-06 修回日期:2021-03-02 出版日期:2022-05-28 发布日期:2022-06-22
  • 通讯作者: Weizhou Jiao,E-mail:zbdxjwz@nuc.edu.cn
  • 基金资助:
    This work was supported by the Specialized Research Fund for Sanjin Scholars Program of Shanxi Province (201707), Key Research & Development Plan of Shanxi Province(201903D321059), Scientific Activities of Selected Returned Overseas Professionals in Shanxi Province(20200004), Transformation and Cultivation Projects of Scientific and Technological Achievements in Universities of Shanxi Province Institutions(2020CG040), and the China National Key Project of Science and Technology “Major Science and Technology Program for Water Pollution Control and Treatment” (2018ZX07601001).

Catalytic decomposition and mass transfer of aqueous ozone promoted by Fe-Mn-Cu/γ-Al2O3 in a rotating packed bed

Weizhou Jiao1, Xingyue Wei1,2, Shengjuan Shao1, Youzhi Liu1   

  1. 1 Shanxi Province Key Laboratory of Higee-Oriented Chemical Engineering, National Demonstration Center for Experimental Comprehensive Chemical Engineering Education, North University of China, Shanxi 030051, China;
    2 Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
  • Received:2021-01-06 Revised:2021-03-02 Online:2022-05-28 Published:2022-06-22
  • Contact: Weizhou Jiao,E-mail:zbdxjwz@nuc.edu.cn
  • Supported by:
    This work was supported by the Specialized Research Fund for Sanjin Scholars Program of Shanxi Province (201707), Key Research & Development Plan of Shanxi Province(201903D321059), Scientific Activities of Selected Returned Overseas Professionals in Shanxi Province(20200004), Transformation and Cultivation Projects of Scientific and Technological Achievements in Universities of Shanxi Province Institutions(2020CG040), and the China National Key Project of Science and Technology “Major Science and Technology Program for Water Pollution Control and Treatment” (2018ZX07601001).

摘要: This study investigated catalytic decomposition and mass transfer of aqueous ozone promoted by Fe-Mn-Cu/γ-Al2O3 (Cat) in a rotating packed bed (RPB) for the first time. The results showed that the value of the overall decomposition rate constant of ozone (Kc) and overall volumetric mass transfer coefficient (KLa) are 4.28×10-3 s-1 and 11.60×10-3 s-1 respectively at an initial pH of 6, β of 40, of 60 mg·L-1 and QL of 85 L·h-1 in deionized water, respectively. Meanwhile, the Kc and KLa values of Fenhe water are 0.88×10-3 s-1 and 2.51×10-3 s-1 lower than deionized water, respectively. In addition, the Kc and KLa values in deionized water for the Cat/O3-RPB system are 44.86% and 47.41% higher than that for the Cat/O3-BR (bubbling reactor) system, respectively, indicating that the high gravity technology can facilitate the decomposition and mass transfer of ozone in heterogeneous catalytic ozonation and provide some insights into the industrial wastewater.

关键词: Rotating packed bed, Ozone, Heterogeneous catalysis, Overall decomposition rate constant, Overall volumetric mass transfer coefficient

Abstract: This study investigated catalytic decomposition and mass transfer of aqueous ozone promoted by Fe-Mn-Cu/γ-Al2O3 (Cat) in a rotating packed bed (RPB) for the first time. The results showed that the value of the overall decomposition rate constant of ozone (Kc) and overall volumetric mass transfer coefficient (KLa) are 4.28×10-3 s-1 and 11.60×10-3 s-1 respectively at an initial pH of 6, β of 40, of 60 mg·L-1 and QL of 85 L·h-1 in deionized water, respectively. Meanwhile, the Kc and KLa values of Fenhe water are 0.88×10-3 s-1 and 2.51×10-3 s-1 lower than deionized water, respectively. In addition, the Kc and KLa values in deionized water for the Cat/O3-RPB system are 44.86% and 47.41% higher than that for the Cat/O3-BR (bubbling reactor) system, respectively, indicating that the high gravity technology can facilitate the decomposition and mass transfer of ozone in heterogeneous catalytic ozonation and provide some insights into the industrial wastewater.

Key words: Rotating packed bed, Ozone, Heterogeneous catalysis, Overall decomposition rate constant, Overall volumetric mass transfer coefficient