Insights into CoFe 2 O 4 /Peracetic Acid Catalytic Oxidation Process for Iopamidol Degradation: Performance, Mechanisms, and I-DBP Formation Control.
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| Title: | Insights into CoFe 2 O 4 /Peracetic Acid Catalytic Oxidation Process for Iopamidol Degradation: Performance, Mechanisms, and I-DBP Formation Control. |
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| Authors: | Wu, Haiwei1 (AUTHOR), Zhang, Jiaming2 (AUTHOR), Zhao, Fangbo1,3 (AUTHOR), Fan, Wei2,4 (AUTHOR), Yang, Song1,3 (AUTHOR), Ma, Jun2,4 (AUTHOR) |
| Source: | Nanomaterials (2079-4991). Jun2025, Vol. 15 Issue 12, p897. 16p. |
| Subjects: | Radiographic contrast media, Disinfection by-product, Peracetic acid, Catalytic oxidation, Charge exchange, Water chlorination |
| Abstract: | In chlorination disinfection treatment, residual iodinated X-ray contrast media (ICMs) are the precursors to iodinated disinfection by-products (I-DBPs). This study employed CoFe2O4 nanoparticle catalytic peracetic acid oxidation (CoFe2O4/PAA) to remove iopamidol (IPM) and control I-DBP formation. The experimental results demonstrated that over 90% of the IPM degradation was achieved in 40 min. The metastable intermediate (≡Co(II)-OO(O)CCH3), rather than the alkoxyl radicals, was identified as the dominant oxidation species (ROS). The electron transfer pathways between the metastable intermediate and IPM were oxygen-atom transfer and single-electron transfer. The monoiodoacetic acid formation potential (MIAAFP) was investigated. In ultraviolet-activated ClO− (UV/chlorine), a portion of I− generated through IPM dehalogenation underwent conversion to reactive iodine species (RIS), consequently elevating the MIAAFP. In CoFe2O4/PAA, the MIAAFP was less than 43% of that in UV/chlorine, which can be attributed to the complete conversion of I− into iodate IO3− without generating RIS. CoFe2O4/PAA is thus a promising treatment for removing ICMs and controlling I-DBP formation due to the efficient degradation of ICMs while avoiding the generation of RIS. [ABSTRACT FROM AUTHOR] |
| Copyright of Nanomaterials (2079-4991) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
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| Header | DbId: egs DbLabel: Engineering Source An: 186258295 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Insights into CoFe 2 O 4 /Peracetic Acid Catalytic Oxidation Process for Iopamidol Degradation: Performance, Mechanisms, and I-DBP Formation Control. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Wu%2C+Haiwei%22">Wu, Haiwei</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhang%2C+Jiaming%22">Zhang, Jiaming</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhao%2C+Fangbo%22">Zhao, Fangbo</searchLink><relatesTo>1,3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Fan%2C+Wei%22">Fan, Wei</searchLink><relatesTo>2,4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Yang%2C+Song%22">Yang, Song</searchLink><relatesTo>1,3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Ma%2C+Jun%22">Ma, Jun</searchLink><relatesTo>2,4</relatesTo> (AUTHOR) – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Nanomaterials+%282079-4991%29%22">Nanomaterials (2079-4991)</searchLink>. Jun2025, Vol. 15 Issue 12, p897. 16p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Radiographic+contrast+media%22">Radiographic contrast media</searchLink><br /><searchLink fieldCode="DE" term="%22Disinfection+by-product%22">Disinfection by-product</searchLink><br /><searchLink fieldCode="DE" term="%22Peracetic+acid%22">Peracetic acid</searchLink><br /><searchLink fieldCode="DE" term="%22Catalytic+oxidation%22">Catalytic oxidation</searchLink><br /><searchLink fieldCode="DE" term="%22Charge+exchange%22">Charge exchange</searchLink><br /><searchLink fieldCode="DE" term="%22Water+chlorination%22">Water chlorination</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: In chlorination disinfection treatment, residual iodinated X-ray contrast media (ICMs) are the precursors to iodinated disinfection by-products (I-DBPs). This study employed CoFe2O4 nanoparticle catalytic peracetic acid oxidation (CoFe2O4/PAA) to remove iopamidol (IPM) and control I-DBP formation. The experimental results demonstrated that over 90% of the IPM degradation was achieved in 40 min. The metastable intermediate (≡Co(II)-OO(O)CCH3), rather than the alkoxyl radicals, was identified as the dominant oxidation species (ROS). The electron transfer pathways between the metastable intermediate and IPM were oxygen-atom transfer and single-electron transfer. The monoiodoacetic acid formation potential (MIAAFP) was investigated. In ultraviolet-activated ClO− (UV/chlorine), a portion of I− generated through IPM dehalogenation underwent conversion to reactive iodine species (RIS), consequently elevating the MIAAFP. In CoFe2O4/PAA, the MIAAFP was less than 43% of that in UV/chlorine, which can be attributed to the complete conversion of I− into iodate IO3− without generating RIS. CoFe2O4/PAA is thus a promising treatment for removing ICMs and controlling I-DBP formation due to the efficient degradation of ICMs while avoiding the generation of RIS. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Nanomaterials (2079-4991) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.3390/nano15120897 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 16 StartPage: 897 Subjects: – SubjectFull: Radiographic contrast media Type: general – SubjectFull: Disinfection by-product Type: general – SubjectFull: Peracetic acid Type: general – SubjectFull: Catalytic oxidation Type: general – SubjectFull: Charge exchange Type: general – SubjectFull: Water chlorination Type: general Titles: – TitleFull: Insights into CoFe 2 O 4 /Peracetic Acid Catalytic Oxidation Process for Iopamidol Degradation: Performance, Mechanisms, and I-DBP Formation Control. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Wu, Haiwei – PersonEntity: Name: NameFull: Zhang, Jiaming – PersonEntity: Name: NameFull: Zhao, Fangbo – PersonEntity: Name: NameFull: Fan, Wei – PersonEntity: Name: NameFull: Yang, Song – PersonEntity: Name: NameFull: Ma, Jun IsPartOfRelationships: – BibEntity: Dates: – D: 15 M: 06 Text: Jun2025 Type: published Y: 2025 Identifiers: – Type: issn-print Value: 20794991 Numbering: – Type: volume Value: 15 – Type: issue Value: 12 Titles: – TitleFull: Nanomaterials (2079-4991) Type: main |
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