A novel insight of degradation ibuprofen in aqueous by catalytic ozonation with supported catalyst:Supports effect on ozone mass transfer  

作　　者：Zizheng Huangfu Wei Ju Yunhan Jia Ruijun Ren Zhenbei Wang Chen Li Xiaomeng Shang Yujie Li Hongnan Liu YuWang Hao Zheng Fei Qi Amir Ikhlaq Jolanta Kumirska Ewa Maria Siedlecka 

机构地区：[1]Beijing Key Laboratory for Source Control Technology of Water Pollution,College of Environmental Science and Engineering,Beijing Forestry University,Beijing 100083,China [2]Beijing Forestry University Science Co.,Ltd.,Beijing 100083,China [3]Institute of Environment Engineering and Research,University of Engineering and Technology,Lahore 54890,Pakistan [4]Department of Environmental Analysis,Faculty of Chemistry,University of Gdansk,Wita Stwosza 63,80-308,Poland

出　　处：《Journal of Environmental Sciences》2024年第11期216-231,共16页环境科学学报（英文版）

基　　金：supported by the National Key Research and Development Program of China(No.2021YFE0100800);the National Natural Science Foundation of China(Nos.22076012,52100002,52200035,and 51878047);the Beijing Forestry University Outstanding Young Talent Cultivation Project(No.2019JQ03008);the Yangtze River Joint Research Phase II Program(Nos.2022-LHYJ-02-0510-02,and 2022-LHYJ-02-0502-02-06);the Open Project of State Key Laboratory of Urban Water Resources and Environment(No.HC202328);the Fundamental Research Funds for the Central Universities(No.BLX202153);the China Postdoctoral Science Foundation(No.2021M700448).

摘　　要：Catalytic ozonation is an effective wastewater purification process.However,the low ozone mass transfer in packed bubble columns leads to low ozone utilization efficiency(OUE),poor organic degradation performance,and high energy consumption.Therefore,there is an urgent need to develop efficient supported catalysts that can enhancemass transfer and performance.However,the reaction mechanism of the support on ozone mass transfer remains unclear,which hinders the development of catalytic ozonation applications.In this study,lava rocks(LR)-supported catalysts,specifically CuMn_(2)O_(4)@LR and MnO_(2)–Co_(3)O_(4)@LR,were proposed for catalytic ozonation of IBP degradation due to their superior catalytic activity,stability,and high OUE.Addition of CuMn_(2)O_(4)@LR or MnO_(2)–Co_(3)O_(4)@LR increased IBP removal efficiency from 85%to 91%or 88%,and reduced energy consumption from 2.86 to 2.14 kWh/m^(3)or 2.60 kWh/m^(3),respectively.This improvement was attributed to LRsupported catalysts enhancing mass transfer and promoting O3 decomposition to generate•OH and•O_(2)^(−),leading to IBP degradation.Furthermore,this study investigated the effects of ozone dose,supporter sizes,and catalyst components on ozone-liquid mass transfer.The results revealed that the size of the supporter influenced stacked porosity and consequently affected ozone mass transfer.Larger-sized LR(kLa=0.172 min^(−1))exhibited better mass transfer compared to smaller-sized supports.Based on these findings,it was concluded that both CuMn_(2)O_(4)@LR and MnO_(2)–Co_(3)O_(4)@LR are potential catalysts for catalytic ozonation in residual IBP degradation of pharmaceutical wastewater,and LR showed good credibility as a catalyst supporter.Understanding the effects of supporters and active components on ozone mass transfer provides a fundamental principle for designing supported catalysts in catalytic ozonation applications.

关 键 词：Catalytic ozonation Lava rocks Overall volumetric mass transfer coefficient Supported catalyst 

分 类 号：X515[环境科学与工程—环境工程]