Reduction of 1,2-dibromoethane in the presence of zero-valent iron
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| Title: | Reduction of 1,2-dibromoethane in the presence of zero-valent iron |
|---|---|
| Authors: | Burris, D. R., Rajagopal, V. K. |
| Source: | Environmental Toxicology & Chemistry. Aug1999, Vol. 18 Issue 8, p1779. 0p. |
| Subjects: | Environmental chemistry, Ethylene dibromide |
| Abstract: | The degradation reaction of 1,2-dibromoethane (ethylene dibromide orEDB) in water was studied in the presence of zero-valent iron (acid-cleaned, cast iron) in well-mixed batch aqueous systems. The observedproducts were ethylene and bromide ions. Carbon and bromine mass recoveries of >95% were obtained. Bromoethane and vinyl bromide were notobserved. The reduction rates of bromoethane and vinyl bromide with iron indicate that they should have been observed if they were significant reaction intermediates for EDB. The results indicate that reductive -elimination may be the dominant reaction pathway. Reaction kinetics are rapid and pseudo-first order. The activation energy was determined to be 50 kJ/mol, indicating that the reaction rate may not be aqueous phase diffusion controlled but rather controlled by the chemical reaction rate on the iron surface. Metallic iron may be a suitable treatment approach for EDB-contaminated groundwater in above-ground, as well as in situ applications, due to rapid kinetics and nontoxicproducts. [ABSTRACT FROM AUTHOR] |
| Copyright of Environmental Toxicology & Chemistry is the property of Oxford University Press / USA 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: 8284632 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Reduction of 1,2-dibromoethane in the presence of zero-valent iron – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Burris%2C+D%2E+R%2E%22">Burris, D. R.</searchLink><br /><searchLink fieldCode="AR" term="%22Rajagopal%2C+V%2E+K%2E%22">Rajagopal, V. K.</searchLink> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Environmental+Toxicology+%26+Chemistry%22">Environmental Toxicology & Chemistry</searchLink>. Aug1999, Vol. 18 Issue 8, p1779. 0p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Environmental+chemistry%22">Environmental chemistry</searchLink><br /><searchLink fieldCode="DE" term="%22Ethylene+dibromide%22">Ethylene dibromide</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: The degradation reaction of 1,2-dibromoethane (ethylene dibromide orEDB) in water was studied in the presence of zero-valent iron (acid-cleaned, cast iron) in well-mixed batch aqueous systems. The observedproducts were ethylene and bromide ions. Carbon and bromine mass recoveries of >95% were obtained. Bromoethane and vinyl bromide were notobserved. The reduction rates of bromoethane and vinyl bromide with iron indicate that they should have been observed if they were significant reaction intermediates for EDB. The results indicate that reductive -elimination may be the dominant reaction pathway. Reaction kinetics are rapid and pseudo-first order. The activation energy was determined to be 50 kJ/mol, indicating that the reaction rate may not be aqueous phase diffusion controlled but rather controlled by the chemical reaction rate on the iron surface. Metallic iron may be a suitable treatment approach for EDB-contaminated groundwater in above-ground, as well as in situ applications, due to rapid kinetics and nontoxicproducts. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Environmental Toxicology & Chemistry is the property of Oxford University Press / USA 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.) |
| PLink | https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=egs&AN=8284632 |
| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1002/etc.5620180825 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 0 StartPage: 1779 Subjects: – SubjectFull: Environmental chemistry Type: general – SubjectFull: Ethylene dibromide Type: general Titles: – TitleFull: Reduction of 1,2-dibromoethane in the presence of zero-valent iron Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Burris, D. R. – PersonEntity: Name: NameFull: Rajagopal, V. K. IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 08 Text: Aug1999 Type: published Y: 1999 Identifiers: – Type: issn-print Value: 07307268 Numbering: – Type: volume Value: 18 – Type: issue Value: 8 Titles: – TitleFull: Environmental Toxicology & Chemistry Type: main |
| ResultId | 1 |
