Solar-Driven Photocatalytic Degradation of Dye Pollutant Using MnO 2 -Modified Biochar via Fenton-like Reactions.
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| Title: | Solar-Driven Photocatalytic Degradation of Dye Pollutant Using MnO 2 -Modified Biochar via Fenton-like Reactions. |
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| Authors: | Sandoval, Jorge A. Soto1,2 (AUTHOR), Ragib, Abdullah Al1,2 (AUTHOR), Kozinski, Janusz1 (AUTHOR), Rakshit, Sudip K.1,2 (AUTHOR), Kang, Kang1 (AUTHOR) kkang3@lakeheadu.ca |
| Source: | Polymers (20734360). May2026, Vol. 18 Issue 9, p1119. 20p. |
| Subjects: | Wastewater treatment, Photodegradation, Photocatalysis kinetics, Haber-Weiss reaction, Heterogeneous catalysts, Color removal (Sewage purification), Catalysts |
| Abstract: | Manganese dioxide (MnO2) modified biochar catalysts derived from biomass and waste polymer feedstocks were synthesized and evaluated as heterogeneous Fenton-like catalysts for solar-driven degradation of Rhodamine B (RhB) in aqueous systems. Biochars produced from maple wood and plastic waste (high-density polyethylene) provided porous carbon matrices with oxygen-rich surface functionalities that enabled effective MnO2 loading and catalytic activity. Photocatalytic experiments conducted under real sunlight using a solar-collector reactor demonstrated faster RhB degradation compared to a conventional ultraviolet (UV) system, confirming the advantage of solar-driven operation. Complete RhB removal was achieved at initial concentrations of 100–300 ppm, whereas higher dye concentrations (500 ppm) exceeded the catalytic capacity within the tested reaction time. Kinetic analysis revealed catalyst-dependent reaction behaviors, indicating that degradation pathways were strongly influenced by the biopolymer-derived carbon structure and MnO2 dispersion. Degradation efficiency was correlated with solar irradiance and reactor temperature, with higher UV index conditions enhancing catalytic performance. Reusability tests showed that the catalysts remained active over multiple cycles, although gradual decreases in reaction rates and catalyst recovery were observed. These results demonstrate the potential of biopolymer-derived carbon materials as effective solar-driven catalysts for wastewater treatment applications. [ABSTRACT FROM AUTHOR] |
| Copyright of Polymers (20734360) is the property of MDPI 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 |
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| Header | DbId: egs DbLabel: Engineering Source An: 193716254 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Solar-Driven Photocatalytic Degradation of Dye Pollutant Using MnO 2 -Modified Biochar via Fenton-like Reactions. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Sandoval%2C+Jorge+A%2E+Soto%22">Sandoval, Jorge A. Soto</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Ragib%2C+Abdullah+Al%22">Ragib, Abdullah Al</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Kozinski%2C+Janusz%22">Kozinski, Janusz</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Rakshit%2C+Sudip+K%2E%22">Rakshit, Sudip K.</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Kang%2C+Kang%22">Kang, Kang</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> kkang3@lakeheadu.ca</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Polymers+%2820734360%29%22">Polymers (20734360)</searchLink>. May2026, Vol. 18 Issue 9, p1119. 20p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Wastewater+treatment%22">Wastewater treatment</searchLink><br /><searchLink fieldCode="DE" term="%22Photodegradation%22">Photodegradation</searchLink><br /><searchLink fieldCode="DE" term="%22Photocatalysis+kinetics%22">Photocatalysis kinetics</searchLink><br /><searchLink fieldCode="DE" term="%22Haber-Weiss+reaction%22">Haber-Weiss reaction</searchLink><br /><searchLink fieldCode="DE" term="%22Heterogeneous+catalysts%22">Heterogeneous catalysts</searchLink><br /><searchLink fieldCode="DE" term="%22Color+removal+%28Sewage+purification%29%22">Color removal (Sewage purification)</searchLink><br /><searchLink fieldCode="DE" term="%22Catalysts%22">Catalysts</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Manganese dioxide (MnO2) modified biochar catalysts derived from biomass and waste polymer feedstocks were synthesized and evaluated as heterogeneous Fenton-like catalysts for solar-driven degradation of Rhodamine B (RhB) in aqueous systems. Biochars produced from maple wood and plastic waste (high-density polyethylene) provided porous carbon matrices with oxygen-rich surface functionalities that enabled effective MnO2 loading and catalytic activity. Photocatalytic experiments conducted under real sunlight using a solar-collector reactor demonstrated faster RhB degradation compared to a conventional ultraviolet (UV) system, confirming the advantage of solar-driven operation. Complete RhB removal was achieved at initial concentrations of 100–300 ppm, whereas higher dye concentrations (500 ppm) exceeded the catalytic capacity within the tested reaction time. Kinetic analysis revealed catalyst-dependent reaction behaviors, indicating that degradation pathways were strongly influenced by the biopolymer-derived carbon structure and MnO2 dispersion. Degradation efficiency was correlated with solar irradiance and reactor temperature, with higher UV index conditions enhancing catalytic performance. Reusability tests showed that the catalysts remained active over multiple cycles, although gradual decreases in reaction rates and catalyst recovery were observed. These results demonstrate the potential of biopolymer-derived carbon materials as effective solar-driven catalysts for wastewater treatment applications. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Polymers (20734360) is the property of MDPI 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: 10.3390/polym18091119 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 20 StartPage: 1119 Subjects: – SubjectFull: Wastewater treatment Type: general – SubjectFull: Photodegradation Type: general – SubjectFull: Photocatalysis kinetics Type: general – SubjectFull: Haber-Weiss reaction Type: general – SubjectFull: Heterogeneous catalysts Type: general – SubjectFull: Color removal (Sewage purification) Type: general – SubjectFull: Catalysts Type: general Titles: – TitleFull: Solar-Driven Photocatalytic Degradation of Dye Pollutant Using MnO 2 -Modified Biochar via Fenton-like Reactions. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Sandoval, Jorge A. Soto – PersonEntity: Name: NameFull: Ragib, Abdullah Al – PersonEntity: Name: NameFull: Kozinski, Janusz – PersonEntity: Name: NameFull: Rakshit, Sudip K. – PersonEntity: Name: NameFull: Kang, Kang IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 05 Text: May2026 Type: published Y: 2026 Identifiers: – Type: issn-print Value: 20734360 Numbering: – Type: volume Value: 18 – Type: issue Value: 9 Titles: – TitleFull: Polymers (20734360) Type: main |
| ResultId | 1 |
