您好，欢迎访问中国水产科学研究院 机构知识库！
中国水产科学研究院机构知识库

全部

  • 全部
  • 标题
  • 学者
  • 机构
  • 关键词

Continuous Catalytic Ozonation of Antibiotics Using Mn and Cu Oxides on gamma-Al2O3 Pellets in a Micropacked Bed Reactor

文献类型： 外文期刊

作者： Cao, Qiang 1 ; Lou, Fengyan 2 ; Liu, Na 1 ; Zhang, Jisong 2 ; Wu, Lidong 1 ;

作者机构： 1.Chinese Acad Fishery Sci, Key Lab Control Qual & Safety Aquat Prod, Minist Agr, Beijing 100141, Peoples R China

2.Tsinghua Univ, State Key Lab Chem Engn, Dept Chem Engn, Beijing 100084, Peoples R China

3.Shanghai Ocean Univ, Coll Food Sci & Technol, Shanghai 201306, Peoples R China

关键词： micropacked bed reactor; continuous catalytic ozonation; antibiotics; gamma-Al2O3 pellets; MnO2; CuO

期刊名称：ACS ES&T WATER （ 影响因子：5.3； 五年影响因子：5.3 ）

ISSN：

年卷期： 2021 年 1 卷 8 期

页码：

收录情况： SCI

摘要： Today, the Al2O3-supported catalyst in the hetero- geneous catalytic ozonation system attracts attention due to its stable structure and relatively high surface activity. Herein, Mn and Cu oxides loaded on gamma-Al2O3 pellets were prepared using an impregnation method to improve the removal efficiency in a micropacked bed reactor (pPBR). The effects of the initial pH, the ratio of O-3 to chemical oxygen demand (COD), and HO center dot scavenger on the catalytic performance were investigated. Experimental results showed that the MnO2/gamma-Al2O3 and CuO/gamma-Al2O3, catalysts exhibited excellent catalytic performance. The COD removal efficiencies were 86.3% for CuO/Al2O3, 76.9% for MnO2/Al2O3, 71.6% for Al2O3, and 35.8% for ozone alone within 71 s. Compared with those of batch reactors, the apparent degradation rate constant of COD with prepared catalysts in a pPBR increased by 2-3 orders of magnitude. In addition, the CuO/gamma-Al2O3 catalyst maintained a relatively stable activity in the continuous flow test for a long time (100 h). Finally, some typical antibiotics were treated by catalytic ozonation in a pPBR The removal efficiencies of these antibiotics and COD reached approximately 100.0% and 62.9-87.8% within 71 s, respectively. Thus, the continuous catalytic ozonation system with the CuO/gamma-Al2O3 catalyst based on mu PBRs could be a promising pathway for the treatment of industrial wastewater with antibiotics.

  • 相关文献
作者其他论文 更多>>
置顶
购物车
反馈

© 京ICP备09089781号-29 主办单位：中国水产科学研究院

学术资源： 中国农业科学院 农业专业知识服务系统 农科联盟资源共建共享平台 中国农业科技文献与信息服务平台 中国农业期刊集成服务平台