Bibliographic Details
| Title: |
Synthesis of Magnetic Biosorbent from Bamboo Powders and Their Application for Methylene Blue Removal from Aqueous Solution: Kinetics, Isotherm, and Regeneration Studies |
| Authors: |
Yaohui Xu, Yang Zhou, Yunxuan Zhou, Pingkeng Wu, Liangjuan Gao, Zhao Ding |
| Source: |
Molecules, Vol 30, Iss 6, p 1320 (2025) |
| Publisher Information: |
MDPI AG, 2025. |
| Publication Year: |
2025 |
| Collection: |
LCC:Organic chemistry |
| Subject Terms: |
bamboo-based biosorbent, magnetic Fe3O4 composite, methylene blue removal, adsorption isotherm models, regeneration, Organic chemistry, QD241-441 |
| More Details: |
Bamboo is known as the “world’s second largest forest”. The bamboo industry has become a globally recognized green industry, and the research and development of bamboo-based products have huge economic, ecological, and cultural values. In this study, a biosorbent with magnetically sensitive properties was developed based on natural bamboo powders (BPs) for the removal of methylene blue (MB) dye from aqueous solution. The selected BPs with 60 mesh were magnetized by loading Fe3O4 using an in situ co-precipitation process. The adsorption–desorption equilibrium was nearly established after 30 min, achieving a removal efficiency of 97.7% for 5.0 g/L BPs/Fe3O4 in a 20 mg/L MB solution. The removal efficiency of MB by 5.0 g/L BPs/Fe3O4 exhibited a remarkable enhancement, escalating from 33.9% at pH = 5 to an impressive 93.9% at pH = 11 in a 50 mg/L MB solution. The linear fitting method demonstrated greater suitability for characterizing the adsorption process compared to the nonlinear fitting method, which encompassed both adsorption isotherms and kinetics studies. Among these approaches, the adsorption isotherms were well-fitted to the Langmuir model, while the kinetics were accurately represented by the pseudo-second-order model. The removal efficiency by the recycled BPs/Fe3O4 adsorbent remained at 97.3% over five consecutive cycles, proving that BPs/Fe3O4 has a high potential for being used as a highly efficient biosorbent. Moreover, the BPs/Fe3O4 biosorbent had superparamagnetism with strong magnetic sensitivity, which could facilitate the sustainable removal of hazardous dye from the aqueous solution in practical applications. |
| Document Type: |
article |
| File Description: |
electronic resource |
| Language: |
English |
| ISSN: |
1420-3049 |
| Relation: |
https://www.mdpi.com/1420-3049/30/6/1320; https://doaj.org/toc/1420-3049 |
| DOI: |
10.3390/molecules30061320 |
| Access URL: |
https://doaj.org/article/aa1dc7f688be4ec384bd14857b9938e0 |
| Accession Number: |
edsdoj.1dc7f688be4ec384bd14857b9938e0 |
| Database: |
Directory of Open Access Journals |
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