Decolorization of reactive orange 16 azo dye in wastewater using CAT/ IrCl3/HClO4 redox system: Delineation of kinetic modeling and mechanistic approaches.
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| Title: | Decolorization of reactive orange 16 azo dye in wastewater using CAT/ IrCl3/HClO4 redox system: Delineation of kinetic modeling and mechanistic approaches. |
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| Authors: | Sukhdev, Anu1 anusukhdev@yahoo.co.in, Manjunatha, A.S.2, Puttaswamy, null3 |
| Source: | Journal of the Taiwan Institute of Chemical Engineers. Jan2017, Vol. 70, p150-160. 11p. |
| Subjects: | Chemical reactions, Azo dyes, Chemical kinetics, Chloramines, Wastewater treatment |
| Abstract: | Reactive orange 16 (RO16) is a reactive azo dye, which is chiefly used in textile industry. In the present research, a simple and expeditious decolorization technique has been developed for the removal of this dye present in the wastewater. Kinetics and oxidative decolorization of RO16 dye with chloramine-T (CAT) in HClO 4 medium catalyzed by iridium (III) chloride (IrCl 3 ) have been investigated spectrophotometrically (λ max = 496 nm) at 303 K. The reaction exhibited a first-order dependence of rate on [CAT] o and [RO16] o respectively. The rate of the reaction was retarded with increase in [H + ] and shows an order less than unity. The order with respect to [IrCl 3 ] was fractional. Oxidation products were identified as 6-acetamido-3,4-dioxo-3,4-dihydro naphthalene-2-sulfonic acid and 2-(phenyl sulfonyl)-ethyl hydrogen sulphate by mass spectral analysis. IrCl 3 catalyzed decolorization reaction is about six times faster than the uncatalyzed reaction. Activation parameters have been computed. The kinetic modelings and mechanistic pathway have been worked out. The oxidative decolorization process has significantly reduced the COD. Phytotoxicity studies demonstrated that the treated dye was less toxic than untreated dye sample. Economic analysis was performed. Notably, the developed oxidative decolorization technique is expected to be helpful for treating RO16 dye present in industrial wastewater with suitable modifications. [ABSTRACT FROM AUTHOR] |
| Copyright of Journal of the Taiwan Institute of Chemical Engineers 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: 120242371 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Decolorization of reactive orange 16 azo dye in wastewater using CAT/ IrCl3/HClO4 redox system: Delineation of kinetic modeling and mechanistic approaches. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Sukhdev%2C+Anu%22">Sukhdev, Anu</searchLink><relatesTo>1</relatesTo><i> anusukhdev@yahoo.co.in</i><br /><searchLink fieldCode="AR" term="%22Manjunatha%2C+A%2ES%2E%22">Manjunatha, A.S.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Puttaswamy%2C+null%22">Puttaswamy, null</searchLink><relatesTo>3</relatesTo> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Journal+of+the+Taiwan+Institute+of+Chemical+Engineers%22">Journal of the Taiwan Institute of Chemical Engineers</searchLink>. Jan2017, Vol. 70, p150-160. 11p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Chemical+reactions%22">Chemical reactions</searchLink><br /><searchLink fieldCode="DE" term="%22Azo+dyes%22">Azo dyes</searchLink><br /><searchLink fieldCode="DE" term="%22Chemical+kinetics%22">Chemical kinetics</searchLink><br /><searchLink fieldCode="DE" term="%22Chloramines%22">Chloramines</searchLink><br /><searchLink fieldCode="DE" term="%22Wastewater+treatment%22">Wastewater treatment</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Reactive orange 16 (RO16) is a reactive azo dye, which is chiefly used in textile industry. In the present research, a simple and expeditious decolorization technique has been developed for the removal of this dye present in the wastewater. Kinetics and oxidative decolorization of RO16 dye with chloramine-T (CAT) in HClO 4 medium catalyzed by iridium (III) chloride (IrCl 3 ) have been investigated spectrophotometrically (λ max = 496 nm) at 303 K. The reaction exhibited a first-order dependence of rate on [CAT] o and [RO16] o respectively. The rate of the reaction was retarded with increase in [H + ] and shows an order less than unity. The order with respect to [IrCl 3 ] was fractional. Oxidation products were identified as 6-acetamido-3,4-dioxo-3,4-dihydro naphthalene-2-sulfonic acid and 2-(phenyl sulfonyl)-ethyl hydrogen sulphate by mass spectral analysis. IrCl 3 catalyzed decolorization reaction is about six times faster than the uncatalyzed reaction. Activation parameters have been computed. The kinetic modelings and mechanistic pathway have been worked out. The oxidative decolorization process has significantly reduced the COD. Phytotoxicity studies demonstrated that the treated dye was less toxic than untreated dye sample. Economic analysis was performed. Notably, the developed oxidative decolorization technique is expected to be helpful for treating RO16 dye present in industrial wastewater with suitable modifications. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Journal of the Taiwan Institute of Chemical Engineers 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.jtice.2016.10.033 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 11 StartPage: 150 Subjects: – SubjectFull: Chemical reactions Type: general – SubjectFull: Azo dyes Type: general – SubjectFull: Chemical kinetics Type: general – SubjectFull: Chloramines Type: general – SubjectFull: Wastewater treatment Type: general Titles: – TitleFull: Decolorization of reactive orange 16 azo dye in wastewater using CAT/ IrCl3/HClO4 redox system: Delineation of kinetic modeling and mechanistic approaches. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Sukhdev, Anu – PersonEntity: Name: NameFull: Manjunatha, A.S. – PersonEntity: Name: NameFull: Puttaswamy, null IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 01 Text: Jan2017 Type: published Y: 2017 Identifiers: – Type: issn-print Value: 18761070 Numbering: – Type: volume Value: 70 Titles: – TitleFull: Journal of the Taiwan Institute of Chemical Engineers Type: main |
| ResultId | 1 |
