Article ; Online: Magnetic nanocomposites prepared from red mud and durian husk as an effective bio-adsorbent for methylene blue adsorption
Aqua, Vol 72, Iss 5, Pp 827-
2023 Volume 840
Abstract: 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 ... ...
| Abstract | 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 <2% of adsorption efficiency). Overall, the outstanding magnetic properties and low-cost bp-Fe3O4 rendered them easily manipulated and separated, and reusable for water/wastewater treatment of MB dye. HIGHLIGHTS Magnetic biopolymer@Fe3O4 was successfully prepared from red mud and durian husk.; Magnetic Fe3O4 nanoparticles were prepared using a one-pot carbon combustion.; Good magnetic properties render them easily separated using a suitable magnet.; Fast and effective removal of methylene blue (MB) on the biopolymer@Fe3O4 at pH 7.; Good reusability of the biopolymer@Fe3O4 during 7 runs of MB adsorption–desorption.; |
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| Keywords | adsorption ; biocomposite ; durian husk ; magnetic nanoparticles ; methylene blue ; Environmental technology. Sanitary engineering ; TD1-1066 ; Environmental sciences ; GE1-350 |
| Subject code | 540 |
| Language | English |
| Publishing date | 2023-05-01T00:00:00Z |
| Publisher | IWA Publishing |
| Document type | Article ; Online |
| Database | BASE - Bielefeld Academic Search Engine (life sciences selection) |
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