Determination of the accumulation, spatial distribution and reduction of Cr in unsaturated Pseudochrobactrum saccharolyticum LY10 biofilms by X-ray fluorescence and absorption methods.
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| Title: | Determination of the accumulation, spatial distribution and reduction of Cr in unsaturated Pseudochrobactrum saccharolyticum LY10 biofilms by X-ray fluorescence and absorption methods. |
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| Authors: | Long, Dongyan1,2, Zou, Lina1, Hashmi, Muhammad Z.3, Cai, Kuan4, Tang, Xianjin1 xianjin@zju.edu.cn, Chen, Guancun1, Shi, Jiyan1 |
| Source: | Chemical Engineering Journal. Nov2015, Vol. 280, p763-770. 8p. |
| Subjects: | Bioaccumulation, Bioremediation, Chromium & the environment, Biofilms, X-ray fluorescence, Reduction of chromium, X-ray absorption near edge structure |
| Abstract: | A Cr(VI)-reducing bacteria ( Pseudochrobactrum saccharolyticum LY10) was selected to simulate the biofilm grown in unsaturated habitats containing Cr(VI) and the X-ray fluorescence and absorption methods were used to characterize the temporal and spatial distributions of metal elements in the unsaturated biofilms in the present study. The results indicated that Cr and other elements (Fe, Mn, Ca, K, and Zn) were selectively accumulated in the unsaturated biofilms. Synchrotron radiation micro X-ray fluorescence microscopy (SR-μXRF) analysis revealed that Cr mainly existed in the 10–45 μm layer near the bottom biofilm–membrane interface after 24 h of Cr exposure. The analysis of Cr speciation by X-ray absorption near-edge structure (XANES) spectroscopy analysis further confirmed the bioreduction of Cr(VI) to Cr(III), and the precipitate formed in the biofilms after reduction were most similar to CrPO 4 . This systematic understanding of the accumulation, distribution and reduction process of Cr in the unsaturated biofilms will elaborate to enhance the bioremediation efficiencies for Cr pollution in soil and other environment. [ABSTRACT FROM AUTHOR] |
| Copyright of Chemical Engineering Journal is the property of Elsevier B.V. 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: 109043453 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Determination of the accumulation, spatial distribution and reduction of Cr in unsaturated Pseudochrobactrum saccharolyticum LY10 biofilms by X-ray fluorescence and absorption methods. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Long%2C+Dongyan%22">Long, Dongyan</searchLink><relatesTo>1,2</relatesTo><br /><searchLink fieldCode="AR" term="%22Zou%2C+Lina%22">Zou, Lina</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Hashmi%2C+Muhammad+Z%2E%22">Hashmi, Muhammad Z.</searchLink><relatesTo>3</relatesTo><br /><searchLink fieldCode="AR" term="%22Cai%2C+Kuan%22">Cai, Kuan</searchLink><relatesTo>4</relatesTo><br /><searchLink fieldCode="AR" term="%22Tang%2C+Xianjin%22">Tang, Xianjin</searchLink><relatesTo>1</relatesTo><i> xianjin@zju.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Chen%2C+Guancun%22">Chen, Guancun</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Shi%2C+Jiyan%22">Shi, Jiyan</searchLink><relatesTo>1</relatesTo> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Chemical+Engineering+Journal%22">Chemical Engineering Journal</searchLink>. Nov2015, Vol. 280, p763-770. 8p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Bioaccumulation%22">Bioaccumulation</searchLink><br /><searchLink fieldCode="DE" term="%22Bioremediation%22">Bioremediation</searchLink><br /><searchLink fieldCode="DE" term="%22Chromium+%26+the+environment%22">Chromium & the environment</searchLink><br /><searchLink fieldCode="DE" term="%22Biofilms%22">Biofilms</searchLink><br /><searchLink fieldCode="DE" term="%22X-ray+fluorescence%22">X-ray fluorescence</searchLink><br /><searchLink fieldCode="DE" term="%22Reduction+of+chromium%22">Reduction of chromium</searchLink><br /><searchLink fieldCode="DE" term="%22X-ray+absorption+near+edge+structure%22">X-ray absorption near edge structure</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: A Cr(VI)-reducing bacteria ( Pseudochrobactrum saccharolyticum LY10) was selected to simulate the biofilm grown in unsaturated habitats containing Cr(VI) and the X-ray fluorescence and absorption methods were used to characterize the temporal and spatial distributions of metal elements in the unsaturated biofilms in the present study. The results indicated that Cr and other elements (Fe, Mn, Ca, K, and Zn) were selectively accumulated in the unsaturated biofilms. Synchrotron radiation micro X-ray fluorescence microscopy (SR-μXRF) analysis revealed that Cr mainly existed in the 10–45 μm layer near the bottom biofilm–membrane interface after 24 h of Cr exposure. The analysis of Cr speciation by X-ray absorption near-edge structure (XANES) spectroscopy analysis further confirmed the bioreduction of Cr(VI) to Cr(III), and the precipitate formed in the biofilms after reduction were most similar to CrPO 4 . This systematic understanding of the accumulation, distribution and reduction process of Cr in the unsaturated biofilms will elaborate to enhance the bioremediation efficiencies for Cr pollution in soil and other environment. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Chemical Engineering Journal is the property of Elsevier B.V. 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: 10.1016/j.cej.2015.06.013 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 8 StartPage: 763 Subjects: – SubjectFull: Bioaccumulation Type: general – SubjectFull: Bioremediation Type: general – SubjectFull: Chromium & the environment Type: general – SubjectFull: Biofilms Type: general – SubjectFull: X-ray fluorescence Type: general – SubjectFull: Reduction of chromium Type: general – SubjectFull: X-ray absorption near edge structure Type: general Titles: – TitleFull: Determination of the accumulation, spatial distribution and reduction of Cr in unsaturated Pseudochrobactrum saccharolyticum LY10 biofilms by X-ray fluorescence and absorption methods. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Long, Dongyan – PersonEntity: Name: NameFull: Zou, Lina – PersonEntity: Name: NameFull: Hashmi, Muhammad Z. – PersonEntity: Name: NameFull: Cai, Kuan – PersonEntity: Name: NameFull: Tang, Xianjin – PersonEntity: Name: NameFull: Chen, Guancun – PersonEntity: Name: NameFull: Shi, Jiyan IsPartOfRelationships: – BibEntity: Dates: – D: 15 M: 11 Text: Nov2015 Type: published Y: 2015 Identifiers: – Type: issn-print Value: 13858947 Numbering: – Type: volume Value: 280 Titles: – TitleFull: Chemical Engineering Journal Type: main |
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