Simply closing the reactor improves the electron efficiency of zerovalent iron toward various metal(loid)s removal.
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| Title: | Simply closing the reactor improves the electron efficiency of zerovalent iron toward various metal(loid)s removal. |
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| Authors: | Fan, Peng1,2,3 (AUTHOR), Guan, Xiaohong1,2,3 (AUTHOR), Wei, Guangfeng1,4 (AUTHOR) weigf@tongji.edu.cn, Li, Lina5 (AUTHOR) lilina@sinap.ac.cn |
| Source: | Water Environment Research (10614303). Oct2021, Vol. 93 Issue 10, p1829-1836. 8p. |
| Subjects: | Water Environment Federation, Electrons, Metals, Equilibrium reactions, Iron corrosion |
| Abstract: | The controlled corrosion of zerovalent iron (ZVI) is crucial for the favorable performance of ZVI toward metal(loid)s removal, and dissolved oxygen (DO) plays an important role in the process of ZVI corrosion. However, few efforts have been made to control the concentration of DO in real practice. In this study, we found that the electron efficiency and the specific removal capacity of ZVI toward the removal of four metal(loid)s were increased by 1.2–9.1 times and 1.2–3.6 times, respectively, by simply closing the reactor, while the removal kinetics of metal(loid)s was slightly influenced. The rate constants obtained under open condition were always greater than those obtained under closed condition, and the removal amounts of metal(loid)s by ZVI at the reaction equilibrium under closed condition were nearly equivalent to those under open condition. Compared with the case under open condition, the consumption‐redissolution process of DO was decelerated under closed condition, and the rapid corrosion of ZVI was alleviated subsequently. Although closing the reactor is simple, it does contribute much to the favorable electron efficiency of ZVI toward metal(loid)s sequestration and can be easily adopted in real practice. © 2021 Water Environment Federation Practitioner points: Closing the reactor promoted the selectivity of ZVI towards four metal(loid)s removal.The consumption‐redissolution process of DO and corrosion of ZVI were decelerated by closing the reactor.Metal(loid)s were reduced to lower valence by ZVI under closed condition.Effect of DO was different when ZVI was applied to remove different metal(loid)s. [ABSTRACT FROM AUTHOR] |
| Copyright of Water Environment Research (10614303) is the property of Wiley-Blackwell 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 |
| FullText | Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 153050209 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Simply closing the reactor improves the electron efficiency of zerovalent iron toward various metal(loid)s removal. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Fan%2C+Peng%22">Fan, Peng</searchLink><relatesTo>1,2,3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Guan%2C+Xiaohong%22">Guan, Xiaohong</searchLink><relatesTo>1,2,3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wei%2C+Guangfeng%22">Wei, Guangfeng</searchLink><relatesTo>1,4</relatesTo> (AUTHOR)<i> weigf@tongji.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Li%2C+Lina%22">Li, Lina</searchLink><relatesTo>5</relatesTo> (AUTHOR)<i> lilina@sinap.ac.cn</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Water+Environment+Research+%2810614303%29%22">Water Environment Research (10614303)</searchLink>. Oct2021, Vol. 93 Issue 10, p1829-1836. 8p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Water+Environment+Federation%22">Water Environment Federation</searchLink><br /><searchLink fieldCode="DE" term="%22Electrons%22">Electrons</searchLink><br /><searchLink fieldCode="DE" term="%22Metals%22">Metals</searchLink><br /><searchLink fieldCode="DE" term="%22Equilibrium+reactions%22">Equilibrium reactions</searchLink><br /><searchLink fieldCode="DE" term="%22Iron+corrosion%22">Iron corrosion</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: The controlled corrosion of zerovalent iron (ZVI) is crucial for the favorable performance of ZVI toward metal(loid)s removal, and dissolved oxygen (DO) plays an important role in the process of ZVI corrosion. However, few efforts have been made to control the concentration of DO in real practice. In this study, we found that the electron efficiency and the specific removal capacity of ZVI toward the removal of four metal(loid)s were increased by 1.2–9.1 times and 1.2–3.6 times, respectively, by simply closing the reactor, while the removal kinetics of metal(loid)s was slightly influenced. The rate constants obtained under open condition were always greater than those obtained under closed condition, and the removal amounts of metal(loid)s by ZVI at the reaction equilibrium under closed condition were nearly equivalent to those under open condition. Compared with the case under open condition, the consumption‐redissolution process of DO was decelerated under closed condition, and the rapid corrosion of ZVI was alleviated subsequently. Although closing the reactor is simple, it does contribute much to the favorable electron efficiency of ZVI toward metal(loid)s sequestration and can be easily adopted in real practice. © 2021 Water Environment Federation Practitioner points: Closing the reactor promoted the selectivity of ZVI towards four metal(loid)s removal.The consumption‐redissolution process of DO and corrosion of ZVI were decelerated by closing the reactor.Metal(loid)s were reduced to lower valence by ZVI under closed condition.Effect of DO was different when ZVI was applied to remove different metal(loid)s. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Water Environment Research (10614303) is the property of Wiley-Blackwell 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: 10.1002/wer.1487 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 8 StartPage: 1829 Subjects: – SubjectFull: Water Environment Federation Type: general – SubjectFull: Electrons Type: general – SubjectFull: Metals Type: general – SubjectFull: Equilibrium reactions Type: general – SubjectFull: Iron corrosion Type: general Titles: – TitleFull: Simply closing the reactor improves the electron efficiency of zerovalent iron toward various metal(loid)s removal. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Fan, Peng – PersonEntity: Name: NameFull: Guan, Xiaohong – PersonEntity: Name: NameFull: Wei, Guangfeng – PersonEntity: Name: NameFull: Li, Lina IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 10 Text: Oct2021 Type: published Y: 2021 Identifiers: – Type: issn-print Value: 10614303 Numbering: – Type: volume Value: 93 – Type: issue Value: 10 Titles: – TitleFull: Water Environment Research (10614303) Type: main |
| ResultId | 1 |
