Preparation of beta-cyclodextrin decorated magnetic lignin by citric acid cross-linker for water treatment
In this research, a straightforward method was used to prepare a multifunctional adsorbent for selective removal of cationic dyes. To synthesize this adsorbent, beta-cyclodextrin (beta-CD), due to the outstanding and unique structure of their caves, which have the appropriate size for trapping and a...
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Elsevier
2025-03-01
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| Series: | Carbohydrate Polymer Technologies and Applications |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666893924002342 |
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| author | Arefe Moatamed Sabzevar Ali Ahmadpour Mahboube Ghahramaninezhad |
| author_facet | Arefe Moatamed Sabzevar Ali Ahmadpour Mahboube Ghahramaninezhad |
| author_sort | Arefe Moatamed Sabzevar |
| collection | DOAJ |
| description | In this research, a straightforward method was used to prepare a multifunctional adsorbent for selective removal of cationic dyes. To synthesize this adsorbent, beta-cyclodextrin (beta-CD), due to the outstanding and unique structure of their caves, which have the appropriate size for trapping and adsorption of cationic dyes, was grafted onto magnetic lignin (ML) via citric acid cross-linker for the first time. Various techniques were applied to characterize magnetic adsorbent (beta-CD@ML), including Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), and nitrogen adsorption-desorption analysis. To check the performance of the beta-CD@ML, the adsorption process was investigated to remove methylene blue from aqueous solutions. The best result for methylene blue removal was approximately 97 % under conditions of pH 7, beta-CD@ML dosage of 0.6 g L−1, pollutant concentration of 20 mg L−1, and time of 45 min, while the removal of methylene blue for magnetic lignin under the same conditions was 55 %. The appropriate model used in adsorption was the Langmuir isotherm, which showed a maximum adsorption capacity of 80 mg g−1at 25 °C. The stability and reusability of beta-CD@ML adsorbent were also investigated, and the results showed a slight decrease in adsorption efficiency. |
| format | Article |
| id | doaj-art-bd533cb615ef46f3825f8c47f1b4f4dd |
| institution | DOAJ |
| issn | 2666-8939 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | Elsevier |
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| series | Carbohydrate Polymer Technologies and Applications |
| spelling | doaj-art-bd533cb615ef46f3825f8c47f1b4f4dd2025-08-20T02:52:23ZengElsevierCarbohydrate Polymer Technologies and Applications2666-89392025-03-01910065410.1016/j.carpta.2024.100654Preparation of beta-cyclodextrin decorated magnetic lignin by citric acid cross-linker for water treatmentArefe Moatamed Sabzevar0Ali Ahmadpour1Mahboube Ghahramaninezhad2Chemical Engineering Department, Faculty of Engineering, Ferdowsi University of Mashhad, P.O. Box 91779-48944, Mashhad, Iran; Industrial Catalysts, Adsorbents, and Environment Lab., Oil and Gas Research Institute, Ferdowsi University of Mashhad, P.O. Box 91779-48974, Mashhad, IranChemical Engineering Department, Faculty of Engineering, Ferdowsi University of Mashhad, P.O. Box 91779-48944, Mashhad, Iran; Industrial Catalysts, Adsorbents, and Environment Lab., Oil and Gas Research Institute, Ferdowsi University of Mashhad, P.O. Box 91779-48974, Mashhad, Iran; Corresponding author.Chemical Engineering Department, Faculty of Engineering, Ferdowsi University of Mashhad, P.O. Box 91779-48944, Mashhad, Iran; Industrial Catalysts, Adsorbents, and Environment Lab., Oil and Gas Research Institute, Ferdowsi University of Mashhad, P.O. Box 91779-48974, Mashhad, IranIn this research, a straightforward method was used to prepare a multifunctional adsorbent for selective removal of cationic dyes. To synthesize this adsorbent, beta-cyclodextrin (beta-CD), due to the outstanding and unique structure of their caves, which have the appropriate size for trapping and adsorption of cationic dyes, was grafted onto magnetic lignin (ML) via citric acid cross-linker for the first time. Various techniques were applied to characterize magnetic adsorbent (beta-CD@ML), including Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), and nitrogen adsorption-desorption analysis. To check the performance of the beta-CD@ML, the adsorption process was investigated to remove methylene blue from aqueous solutions. The best result for methylene blue removal was approximately 97 % under conditions of pH 7, beta-CD@ML dosage of 0.6 g L−1, pollutant concentration of 20 mg L−1, and time of 45 min, while the removal of methylene blue for magnetic lignin under the same conditions was 55 %. The appropriate model used in adsorption was the Langmuir isotherm, which showed a maximum adsorption capacity of 80 mg g−1at 25 °C. The stability and reusability of beta-CD@ML adsorbent were also investigated, and the results showed a slight decrease in adsorption efficiency.http://www.sciencedirect.com/science/article/pii/S2666893924002342Magnetic ligninCyclodextrinWater treatmentMethylene blueCitric acid |
| spellingShingle | Arefe Moatamed Sabzevar Ali Ahmadpour Mahboube Ghahramaninezhad Preparation of beta-cyclodextrin decorated magnetic lignin by citric acid cross-linker for water treatment Carbohydrate Polymer Technologies and Applications Magnetic lignin Cyclodextrin Water treatment Methylene blue Citric acid |
| title | Preparation of beta-cyclodextrin decorated magnetic lignin by citric acid cross-linker for water treatment |
| title_full | Preparation of beta-cyclodextrin decorated magnetic lignin by citric acid cross-linker for water treatment |
| title_fullStr | Preparation of beta-cyclodextrin decorated magnetic lignin by citric acid cross-linker for water treatment |
| title_full_unstemmed | Preparation of beta-cyclodextrin decorated magnetic lignin by citric acid cross-linker for water treatment |
| title_short | Preparation of beta-cyclodextrin decorated magnetic lignin by citric acid cross-linker for water treatment |
| title_sort | preparation of beta cyclodextrin decorated magnetic lignin by citric acid cross linker for water treatment |
| topic | Magnetic lignin Cyclodextrin Water treatment Methylene blue Citric acid |
| url | http://www.sciencedirect.com/science/article/pii/S2666893924002342 |
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