Selective adsorptive removal and separation of harmful anionic dyes using mesoporous magnesium oxide-chitosan composite
In this study, mesoporous magnesium oxide-chitosan composite (MCC) has been studied for the selective adsorptive separation of harmful anionic dyes. The synthesis of MCC has been carried out via a post-immobilization method, which involves combining chitosan with pre-fabricated MgO at room temperatu...
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Elsevier
2025-06-01
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| Series: | Hybrid Advances |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2773207X2500017X |
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| author | Mudita Nagpal Nidhi Sharma Ankit Mittal |
| author_facet | Mudita Nagpal Nidhi Sharma Ankit Mittal |
| author_sort | Mudita Nagpal |
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| description | In this study, mesoporous magnesium oxide-chitosan composite (MCC) has been studied for the selective adsorptive separation of harmful anionic dyes. The synthesis of MCC has been carried out via a post-immobilization method, which involves combining chitosan with pre-fabricated MgO at room temperature. MgO used for preparing MCC has been prepared via an environmental friendly precipitation procedure, with template, gelatin. Characterization techniques such as XRD, SEM and FTIR validated the presence of chitosan and MgO in MCC. BET surface area of MCC has been evaluated as 35.6 m2 g−1, using N2 adsorption-desorption isotherms. BJH analysis showed that mesopores are present in the composite. Synthesized composite, MCC has been shown to be excellent for adsorption of toxic anionic dyes, like Congo red (CR) and Indigo carmine (IC). The impact of multiple adsorption parameters such as, pH, time of contact, dosage of adsorbent and concentration of dye, on CR adsorption on MCC has been studied in detail. The maximum adsorption capacity shown by MCC for CR has been reported to 156.25 mg g−1. Further, MCC exhibits good recyclability and a selectivity for anionic dyes by effectively adsorbing anionic dyes from binary systems composed of anionic and cationic dyes, with a high value of separation factor. |
| format | Article |
| id | doaj-art-957221d79991496aa921563aa86505a9 |
| institution | Kabale University |
| issn | 2773-207X |
| language | English |
| publishDate | 2025-06-01 |
| publisher | Elsevier |
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| series | Hybrid Advances |
| spelling | doaj-art-957221d79991496aa921563aa86505a92025-01-31T05:12:49ZengElsevierHybrid Advances2773-207X2025-06-019100393Selective adsorptive removal and separation of harmful anionic dyes using mesoporous magnesium oxide-chitosan compositeMudita Nagpal0Nidhi Sharma1Ankit Mittal2School of Engineering & Technology, Vivekananda Institute of Professional Studies-Technical Campus, AU Block, Pitampura, Delhi, 110034, India; Corresponding author.School of Engineering & Technology, Vivekananda Institute of Professional Studies-Technical Campus, AU Block, Pitampura, Delhi, 110034, IndiaDepartment of Chemistry, Shyam Lal College, University of Delhi, Delhi, 110032, IndiaIn this study, mesoporous magnesium oxide-chitosan composite (MCC) has been studied for the selective adsorptive separation of harmful anionic dyes. The synthesis of MCC has been carried out via a post-immobilization method, which involves combining chitosan with pre-fabricated MgO at room temperature. MgO used for preparing MCC has been prepared via an environmental friendly precipitation procedure, with template, gelatin. Characterization techniques such as XRD, SEM and FTIR validated the presence of chitosan and MgO in MCC. BET surface area of MCC has been evaluated as 35.6 m2 g−1, using N2 adsorption-desorption isotherms. BJH analysis showed that mesopores are present in the composite. Synthesized composite, MCC has been shown to be excellent for adsorption of toxic anionic dyes, like Congo red (CR) and Indigo carmine (IC). The impact of multiple adsorption parameters such as, pH, time of contact, dosage of adsorbent and concentration of dye, on CR adsorption on MCC has been studied in detail. The maximum adsorption capacity shown by MCC for CR has been reported to 156.25 mg g−1. Further, MCC exhibits good recyclability and a selectivity for anionic dyes by effectively adsorbing anionic dyes from binary systems composed of anionic and cationic dyes, with a high value of separation factor.http://www.sciencedirect.com/science/article/pii/S2773207X2500017XMagnesium oxide-chitosan compositeDye removalSelective adsorptionAnionic dyesWastewater remediation |
| spellingShingle | Mudita Nagpal Nidhi Sharma Ankit Mittal Selective adsorptive removal and separation of harmful anionic dyes using mesoporous magnesium oxide-chitosan composite Hybrid Advances Magnesium oxide-chitosan composite Dye removal Selective adsorption Anionic dyes Wastewater remediation |
| title | Selective adsorptive removal and separation of harmful anionic dyes using mesoporous magnesium oxide-chitosan composite |
| title_full | Selective adsorptive removal and separation of harmful anionic dyes using mesoporous magnesium oxide-chitosan composite |
| title_fullStr | Selective adsorptive removal and separation of harmful anionic dyes using mesoporous magnesium oxide-chitosan composite |
| title_full_unstemmed | Selective adsorptive removal and separation of harmful anionic dyes using mesoporous magnesium oxide-chitosan composite |
| title_short | Selective adsorptive removal and separation of harmful anionic dyes using mesoporous magnesium oxide-chitosan composite |
| title_sort | selective adsorptive removal and separation of harmful anionic dyes using mesoporous magnesium oxide chitosan composite |
| topic | Magnesium oxide-chitosan composite Dye removal Selective adsorption Anionic dyes Wastewater remediation |
| url | http://www.sciencedirect.com/science/article/pii/S2773207X2500017X |
| work_keys_str_mv | AT muditanagpal selectiveadsorptiveremovalandseparationofharmfulanionicdyesusingmesoporousmagnesiumoxidechitosancomposite AT nidhisharma selectiveadsorptiveremovalandseparationofharmfulanionicdyesusingmesoporousmagnesiumoxidechitosancomposite AT ankitmittal selectiveadsorptiveremovalandseparationofharmfulanionicdyesusingmesoporousmagnesiumoxidechitosancomposite |