Role of cationic surfactant in the removal of chromium(VI) by sodium borohydride.
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| Title: | Role of cationic surfactant in the removal of chromium(VI) by sodium borohydride. |
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| Authors: | Sashanan Al‐Zahrani, Fatima M.1 (AUTHOR), Albukhari, Soha M.1 (AUTHOR), Zaheer, Zoya1 (AUTHOR) zoya.zaheer@gmail.com |
| Source: | Canadian Journal of Chemical Engineering. Jun2026, Vol. 104 Issue 6, p3228-3238. 11p. |
| Subjects: | Cetyltrimethylammonium bromide, Sodium borohydride, Water pollution remediation, Activation energy, Chromium removal (Sewage purification), Complex ions, Chemical decomposition, Cationic surfactants |
| Abstract: | Sodium borohydride (NaBH4) is one of the most effective reductants for chromium(VI), a severely toxic natural water and soil contaminant. Spectroscopic investigations of oxidative degradation of potassium dichromate (Cr(VI)) by NaBH4 have been studied in aqueous media. At lower concentrations of oxidant, researchers observed the formation of a coordination complex between chitosan, Cr(VI), and borohydride (BH4−) prior to the rate‐determining step. Removal efficiency decreases from 87.1% to 17.5% with increasing the pH from 3.0 to 8.0 of the reaction mixtures. Activation parameters (activation energy = 59.5 kJ/mol, enthalpy of activation = 57.2 kJ/mol and entropy of activation = −67.8 JK−1 mol−1) were determined for Cr(VI) removal and compared with the literature values. Post‐micellar effect was negligible due to the strong coordination between the cetyltrimethylammonium bromide (CTAB) aggregates and reactants. CTAB is an effective inhibitor (removal efficiency decreases sharply from 80.2% to 18.1% with CTAB concentration, from 0.0 to 3.0 mM) and environmentally friendly, and this research showed that the use of CTAB can be a promising approach for the inhibition of the fast removal of water contaminants and resistant compounds. [ABSTRACT FROM AUTHOR] |
| Copyright of Canadian Journal of Chemical Engineering 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: 193710926 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Role of cationic surfactant in the removal of chromium(VI) by sodium borohydride. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Sashanan+Al‐Zahrani%2C+Fatima+M%2E%22">Sashanan Al‐Zahrani, Fatima M.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Albukhari%2C+Soha+M%2E%22">Albukhari, Soha M.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zaheer%2C+Zoya%22">Zaheer, Zoya</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> zoya.zaheer@gmail.com</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Canadian+Journal+of+Chemical+Engineering%22">Canadian Journal of Chemical Engineering</searchLink>. Jun2026, Vol. 104 Issue 6, p3228-3238. 11p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Cetyltrimethylammonium+bromide%22">Cetyltrimethylammonium bromide</searchLink><br /><searchLink fieldCode="DE" term="%22Sodium+borohydride%22">Sodium borohydride</searchLink><br /><searchLink fieldCode="DE" term="%22Water+pollution+remediation%22">Water pollution remediation</searchLink><br /><searchLink fieldCode="DE" term="%22Activation+energy%22">Activation energy</searchLink><br /><searchLink fieldCode="DE" term="%22Chromium+removal+%28Sewage+purification%29%22">Chromium removal (Sewage purification)</searchLink><br /><searchLink fieldCode="DE" term="%22Complex+ions%22">Complex ions</searchLink><br /><searchLink fieldCode="DE" term="%22Chemical+decomposition%22">Chemical decomposition</searchLink><br /><searchLink fieldCode="DE" term="%22Cationic+surfactants%22">Cationic surfactants</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Sodium borohydride (NaBH4) is one of the most effective reductants for chromium(VI), a severely toxic natural water and soil contaminant. Spectroscopic investigations of oxidative degradation of potassium dichromate (Cr(VI)) by NaBH4 have been studied in aqueous media. At lower concentrations of oxidant, researchers observed the formation of a coordination complex between chitosan, Cr(VI), and borohydride (BH4−) prior to the rate‐determining step. Removal efficiency decreases from 87.1% to 17.5% with increasing the pH from 3.0 to 8.0 of the reaction mixtures. Activation parameters (activation energy = 59.5 kJ/mol, enthalpy of activation = 57.2 kJ/mol and entropy of activation = −67.8 JK−1 mol−1) were determined for Cr(VI) removal and compared with the literature values. Post‐micellar effect was negligible due to the strong coordination between the cetyltrimethylammonium bromide (CTAB) aggregates and reactants. CTAB is an effective inhibitor (removal efficiency decreases sharply from 80.2% to 18.1% with CTAB concentration, from 0.0 to 3.0 mM) and environmentally friendly, and this research showed that the use of CTAB can be a promising approach for the inhibition of the fast removal of water contaminants and resistant compounds. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Canadian Journal of Chemical Engineering 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/cjce.70190 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 11 StartPage: 3228 Subjects: – SubjectFull: Cetyltrimethylammonium bromide Type: general – SubjectFull: Sodium borohydride Type: general – SubjectFull: Water pollution remediation Type: general – SubjectFull: Activation energy Type: general – SubjectFull: Chromium removal (Sewage purification) Type: general – SubjectFull: Complex ions Type: general – SubjectFull: Chemical decomposition Type: general – SubjectFull: Cationic surfactants Type: general Titles: – TitleFull: Role of cationic surfactant in the removal of chromium(VI) by sodium borohydride. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Sashanan Al‐Zahrani, Fatima M. – PersonEntity: Name: NameFull: Albukhari, Soha M. – PersonEntity: Name: NameFull: Zaheer, Zoya IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 06 Text: Jun2026 Type: published Y: 2026 Identifiers: – Type: issn-print Value: 00084034 Numbering: – Type: volume Value: 104 – Type: issue Value: 6 Titles: – TitleFull: Canadian Journal of Chemical Engineering Type: main |
| ResultId | 1 |
