Magnetic nanocomposites prepared from red mud and durian husk as an effective bio-adsorbent for methylene blue adsorption
| Autor: | Nghia T. Bui, Thanh Thi Hoang, Phuong L. N. Nguyen, Nguyen Thi My Linh, Quoc-An Trieu, Trung Huu Bui |
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| Jazyk: | angličtina |
| Rok vydání: | 2023 |
| Předmět: | |
| Zdroj: | Aqua, Vol 72, Iss 5, Pp 827-840 (2023) |
| Druh dokumentu: | article |
| ISSN: | 2709-8028 2709-8036 |
| DOI: | 10.2166/aqua.2023.051 |
| Popis: | An increasing interest in nanocomposites prepared from agricultural/industrial byproducts has been paid for environmental remediation, especially in water treatment. This study reports the facile preparation of a low-cost magnetic biocomposite of magnetic Fe3O4 nanoparticles (NPs) incorporated with biopolymers extracted from durian husk, called bp-Fe3O4 and examined in the removal of methylene blue (MB) dye. Here, Fe2O3 NPs were first recovered from red mud waste and then converted to magnetic nanostructured Fe3O4 using a one-pot process via carbon combustion. The bp-Fe3O4 inherited the characteristics of each constituent component, while showing slightly higher saturation magnetization than the bare Fe3O4 NPs (19.84 and 18.66 emu/g, respectively), allowing for easy separation from the aqueous solution using a suitable magnet. The MB adsorption on bp-Fe3O4 reached an equilibrium state within 60 min reaction and achieved >90% of removal (at 50 mg/L MB) at an optimal pH range of 6–8. The effective adsorption of MB dye was attributed to both the hydroxylated-Fe3O4 NPs and biopolymers. The material showed excellent reusability tested up to the seventh MB adsorption cycle (decreased by |
| Databáze: | Directory of Open Access Journals |
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