Adsorption of Acid Yellow 36 and direct blue 86 dyes to Delonix regia biochar-sulphur
Abstract This study aims to investigate a new approach to removing hazardous dyes like Direct Blue 86 (DB86) and Acid Yellow 36 (AY36) from aqueous environments. Delonix regia biochar-sulphur (DRB-S), made from Delonix regia seed pods (DPSPs), is an inexpensive and environmentally friendly adsorbent...
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Nature Portfolio
2025-01-01
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| Online Access: | https://doi.org/10.1038/s41598-025-85405-4 |
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| author | Ahmed Eleryan Uyiosa Osagie Aigbe Kingsley Eghonghon Ukhurebor Mohamed A. Hassaan Safaa Ragab Otolorin Adelaja Osibote Ismail Hossain Ahmed El Nemr |
| author_facet | Ahmed Eleryan Uyiosa Osagie Aigbe Kingsley Eghonghon Ukhurebor Mohamed A. Hassaan Safaa Ragab Otolorin Adelaja Osibote Ismail Hossain Ahmed El Nemr |
| author_sort | Ahmed Eleryan |
| collection | DOAJ |
| description | Abstract This study aims to investigate a new approach to removing hazardous dyes like Direct Blue 86 (DB86) and Acid Yellow 36 (AY36) from aqueous environments. Delonix regia biochar-sulphur (DRB-S), made from Delonix regia seed pods (DPSPs), is an inexpensive and environmentally friendly adsorbent. Different characterization investigations using BJH, BET, FTIR, SEM, DSC, TGA, and EDX were utilized in the descriptions of the DRB-S biosorbent. The optimal pH for AY36 dye and DB86 dye adsorption to the DRB-S adsorvbent was at pH 1.5. For the adsorption of AY36 and DB86 to DRB-S, equilibrium was attained at 30 and 90 min of reaction time interaction. The Langmuir model (LGM) and pseudo-second-order-model (PSOM) best describe the biosorption of both dye molecules to the biosorbent owing to the equal and homogeneous spread of the dye molecules over the biosorbent porous surface and a chemisorption process which involved the valency force through the exchange of electrons between the dye molecules and the prepared biosorbent. The determined biosorption capacities for both dyes (AY36 and DB86) were found to be 270.27 mg/g and 36.23 mg/g, respectively. In conclusion, this recently synthesised DRB-S adsorbent exhibited an impressive sorption capacity and successfully removed AY36 and DB86 dyes. This suggests that the biosorbent has potential applications in wastewater treatment and can be recycled without affecting its adsorption effectiveness. |
| format | Article |
| id | doaj-art-13b66b65e8004edf9d52b40bedf53651 |
| institution | Kabale University |
| issn | 2045-2322 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj-art-13b66b65e8004edf9d52b40bedf536512025-02-02T12:17:47ZengNature PortfolioScientific Reports2045-23222025-01-0115112610.1038/s41598-025-85405-4Adsorption of Acid Yellow 36 and direct blue 86 dyes to Delonix regia biochar-sulphurAhmed Eleryan0Uyiosa Osagie Aigbe1Kingsley Eghonghon Ukhurebor2Mohamed A. Hassaan3Safaa Ragab4Otolorin Adelaja Osibote5Ismail Hossain6Ahmed El Nemr7National Institute of Oceanography and Fisheries (NIOF), Kayet BeyDepartment of Mathematics and Physics, Cape Peninsula University of TechnologyDepartment of Physics, Edo State UniversityNational Institute of Oceanography and Fisheries (NIOF), Kayet BeyNational Institute of Oceanography and Fisheries (NIOF), Kayet BeyDepartment of Mathematics and Physics, Cape Peninsula University of TechnologyDepartment of Nuclear and Renewable Energy, Ural Federal UniversityNational Institute of Oceanography and Fisheries (NIOF), Kayet BeyAbstract This study aims to investigate a new approach to removing hazardous dyes like Direct Blue 86 (DB86) and Acid Yellow 36 (AY36) from aqueous environments. Delonix regia biochar-sulphur (DRB-S), made from Delonix regia seed pods (DPSPs), is an inexpensive and environmentally friendly adsorbent. Different characterization investigations using BJH, BET, FTIR, SEM, DSC, TGA, and EDX were utilized in the descriptions of the DRB-S biosorbent. The optimal pH for AY36 dye and DB86 dye adsorption to the DRB-S adsorvbent was at pH 1.5. For the adsorption of AY36 and DB86 to DRB-S, equilibrium was attained at 30 and 90 min of reaction time interaction. The Langmuir model (LGM) and pseudo-second-order-model (PSOM) best describe the biosorption of both dye molecules to the biosorbent owing to the equal and homogeneous spread of the dye molecules over the biosorbent porous surface and a chemisorption process which involved the valency force through the exchange of electrons between the dye molecules and the prepared biosorbent. The determined biosorption capacities for both dyes (AY36 and DB86) were found to be 270.27 mg/g and 36.23 mg/g, respectively. In conclusion, this recently synthesised DRB-S adsorbent exhibited an impressive sorption capacity and successfully removed AY36 and DB86 dyes. This suggests that the biosorbent has potential applications in wastewater treatment and can be recycled without affecting its adsorption effectiveness.https://doi.org/10.1038/s41598-025-85405-4AdsorptionBiocharDye removalDelonix regia seed podsWastewater treatment |
| spellingShingle | Ahmed Eleryan Uyiosa Osagie Aigbe Kingsley Eghonghon Ukhurebor Mohamed A. Hassaan Safaa Ragab Otolorin Adelaja Osibote Ismail Hossain Ahmed El Nemr Adsorption of Acid Yellow 36 and direct blue 86 dyes to Delonix regia biochar-sulphur Scientific Reports Adsorption Biochar Dye removal Delonix regia seed pods Wastewater treatment |
| title | Adsorption of Acid Yellow 36 and direct blue 86 dyes to Delonix regia biochar-sulphur |
| title_full | Adsorption of Acid Yellow 36 and direct blue 86 dyes to Delonix regia biochar-sulphur |
| title_fullStr | Adsorption of Acid Yellow 36 and direct blue 86 dyes to Delonix regia biochar-sulphur |
| title_full_unstemmed | Adsorption of Acid Yellow 36 and direct blue 86 dyes to Delonix regia biochar-sulphur |
| title_short | Adsorption of Acid Yellow 36 and direct blue 86 dyes to Delonix regia biochar-sulphur |
| title_sort | adsorption of acid yellow 36 and direct blue 86 dyes to delonix regia biochar sulphur |
| topic | Adsorption Biochar Dye removal Delonix regia seed pods Wastewater treatment |
| url | https://doi.org/10.1038/s41598-025-85405-4 |
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