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Generation of reactive oxygen species from oxygen microbubbles in phosphoric acid solution and its application of ferrous iron oxidation
Wang, Yaru1,2; Lyu, Yeqing1; Wang, Shaona1,2; Du, Hao1,2
2021-08-01
Source PublicationJOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
ISSN1876-1070
Volume125Pages:195-203
AbstractBackground: Microbubbles have been widely used in advanced oxidation processes due to the generation of reactive oxygen species (ROS). In this study, the oxidation of ferrous ions in phosphoric acid solutions has been examined, focusing on the advanced oxidation activity of oxygen microbubbles. Methods: Ultraviolet spectroscopy was used to determine the species and content of ROS. Electron spin-resonance spectroscopy and radical quenching experiments have confirmed the path of ROS generation. Significant findings: It is concluded that the main ROS in the phosphoric acid solution was H2O2, and the generation of H2O2 was due to sequential single electron reduction of oxygen molecules. The amount of H2O2 generated was determined to be dependent on the temperature and phosphoric acid concentration, and under the optimal conditions (100 degrees C and 7 mol/L H3PO4), 4.23 mmol/L H2O2 was produced from microbubbles. The kinetics analysis with respect to the oxidation of ferrous ions suggested significant reduction of reaction activation energy from greater than 56.1kJ/mol to 43.84 kJ/mol due to the oxidation via ROS, demonstrating that microbubble intensification is a facile and effective advanced oxidation method. (c) 2021 Taiwan Institute of Chemical Engineers. Published by Elsevier B.V. All rights reserved.
KeywordMicrobubble Hydrogen peroxide Ferrous ion Reactive oxygen species Phosphoric acid
DOI10.1016/j.jtice.2021.06.025
Language英语
WOS KeywordPHOTOCATALYTIC DEGRADATION ; RADICAL GENERATION ; AQUEOUS-SOLUTIONS ; SURFACE-TENSION ; WATER-TREATMENT ; AIR FLOTATION ; REDUCTION ; KINETICS ; SULFATE ; CLINOPTILOLITE
Funding ProjectNational Key Research and Development Program of China[2020YFC1909703] ; S&T Program of Hebei Provincial Government[20373808D] ; S&T Program of Hebei Provincial Government[206Z4401G] ; National Natural Science Foundation of China[51774261] ; Fangchenggang Key RD Program[AB20014008]
WOS Research AreaEngineering
WOS SubjectEngineering, Chemical
Funding OrganizationNational Key Research and Development Program of China ; S&T Program of Hebei Provincial Government ; National Natural Science Foundation of China ; Fangchenggang Key RD Program
WOS IDWOS:000682944600005
PublisherELSEVIER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/49591
Collection中国科学院过程工程研究所
Corresponding AuthorDu, Hao
Affiliation1.Chinese Acad Sci, Inst Proc Engn, CAS Key Lab Green Proc & Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Wang, Yaru,Lyu, Yeqing,Wang, Shaona,et al. Generation of reactive oxygen species from oxygen microbubbles in phosphoric acid solution and its application of ferrous iron oxidation[J]. JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS,2021,125:195-203.
APA Wang, Yaru,Lyu, Yeqing,Wang, Shaona,&Du, Hao.(2021).Generation of reactive oxygen species from oxygen microbubbles in phosphoric acid solution and its application of ferrous iron oxidation.JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS,125,195-203.
MLA Wang, Yaru,et al."Generation of reactive oxygen species from oxygen microbubbles in phosphoric acid solution and its application of ferrous iron oxidation".JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS 125(2021):195-203.
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