Spontaneous degradation of methylene blue adsorbed on magnetic biochars
Abstract Methylene blue (MB) is one of the most widely studied organic molecules in the treatment of wastewater. Sorption, biodegradation, photodegradation, electrochemical oxidation, ozonation, and other advanced oxidative processes are frequently used to remove this dye from water solutions. The u...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2023-09-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-023-39976-9 |
| _version_ | 1797559738342309888 |
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| author | Anton Zubrik Dávid Jáger Eva Mačingová Marek Matik Slavomír Hredzák |
| author_facet | Anton Zubrik Dávid Jáger Eva Mačingová Marek Matik Slavomír Hredzák |
| author_sort | Anton Zubrik |
| collection | DOAJ |
| description | Abstract Methylene blue (MB) is one of the most widely studied organic molecules in the treatment of wastewater. Sorption, biodegradation, photodegradation, electrochemical oxidation, ozonation, and other advanced oxidative processes are frequently used to remove this dye from water solutions. The unexpected degradation of MB adsorbed on magnetic biochar from aqueous solution was observed. We found that the conditions of handling, such as drying temperature and storage period, substantially influenced the stability of the dye fixed on the (magnetic) carbon adsorbents. Twelve substances were identified by mass spectrometry as products of decomposition, mostly demethylated, oxidated, and hydroxylated substances. The decomposition of MB was further investigated using non-magnetic carbon biochars and aluminosilicate mineral zeolite. Our findings of the spontaneous decomposition of MB and the identification of the species of degradation offer a new approach to evaluate the mechanism of adsorption, the process of regeneration, and the toxicity of treated solutions. |
| first_indexed | 2024-03-10T17:50:36Z |
| format | Article |
| id | doaj.art-1ebd853623044b53a2bac317529affd8 |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-03-10T17:50:36Z |
| publishDate | 2023-09-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-1ebd853623044b53a2bac317529affd82023-11-20T09:22:37ZengNature PortfolioScientific Reports2045-23222023-09-0113111010.1038/s41598-023-39976-9Spontaneous degradation of methylene blue adsorbed on magnetic biocharsAnton Zubrik0Dávid Jáger1Eva Mačingová2Marek Matik3Slavomír Hredzák4Institute of Geotechnics of the Slovak Academy of SciencesInstitute of Geotechnics of the Slovak Academy of SciencesInstitute of Geotechnics of the Slovak Academy of SciencesInstitute of Geotechnics of the Slovak Academy of SciencesInstitute of Geotechnics of the Slovak Academy of SciencesAbstract Methylene blue (MB) is one of the most widely studied organic molecules in the treatment of wastewater. Sorption, biodegradation, photodegradation, electrochemical oxidation, ozonation, and other advanced oxidative processes are frequently used to remove this dye from water solutions. The unexpected degradation of MB adsorbed on magnetic biochar from aqueous solution was observed. We found that the conditions of handling, such as drying temperature and storage period, substantially influenced the stability of the dye fixed on the (magnetic) carbon adsorbents. Twelve substances were identified by mass spectrometry as products of decomposition, mostly demethylated, oxidated, and hydroxylated substances. The decomposition of MB was further investigated using non-magnetic carbon biochars and aluminosilicate mineral zeolite. Our findings of the spontaneous decomposition of MB and the identification of the species of degradation offer a new approach to evaluate the mechanism of adsorption, the process of regeneration, and the toxicity of treated solutions.https://doi.org/10.1038/s41598-023-39976-9 |
| spellingShingle | Anton Zubrik Dávid Jáger Eva Mačingová Marek Matik Slavomír Hredzák Spontaneous degradation of methylene blue adsorbed on magnetic biochars Scientific Reports |
| title | Spontaneous degradation of methylene blue adsorbed on magnetic biochars |
| title_full | Spontaneous degradation of methylene blue adsorbed on magnetic biochars |
| title_fullStr | Spontaneous degradation of methylene blue adsorbed on magnetic biochars |
| title_full_unstemmed | Spontaneous degradation of methylene blue adsorbed on magnetic biochars |
| title_short | Spontaneous degradation of methylene blue adsorbed on magnetic biochars |
| title_sort | spontaneous degradation of methylene blue adsorbed on magnetic biochars |
| url | https://doi.org/10.1038/s41598-023-39976-9 |
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