β-cyclodextrin modified magnetic palm fiber biochar for highly efficient Pb(II) removal from water

CUI Can; NIU Jiaojiao; YANG Lian; ZHOU Lingyun; WANG Huanjiang; XIE Yadian

doi:10.13801/j.cnki.fhclxb.20230706.002

Volume 41 Issue 3

Mar. 2024

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Article Navigation > Acta Materiae Compositae Sinica > 2024 > 41(3): 1378-1390

CUI Can, NIU Jiaojiao, YANG Lian, et al. β-cyclodextrin modified magnetic palm fiber biochar for highly efficient Pb(II) removal from water[J]. Acta Materiae Compositae Sinica, 2024, 41(3): 1378-1390. doi: 10.13801/j.cnki.fhclxb.20230706.002

Citation:

CUI Can, NIU Jiaojiao, YANG Lian, et al. β-cyclodextrin modified magnetic palm fiber biochar for highly efficient Pb(II) removal from water[J]. Acta Materiae Compositae Sinica, 2024, 41(3): 1378-1390. doi: 10.13801/j.cnki.fhclxb.20230706.002

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β-cyclodextrin modified magnetic palm fiber biochar for highly efficient Pb(II) removal from water

doi: 10.13801/j.cnki.fhclxb.20230706.002

CUI Can^{1, 2
,
,},
NIU Jiaojiao^{1, 2},
YANG Lian^{1, 2},
ZHOU Lingyun^{1, 2},
WANG Huanjiang^{1, 2},
XIE Yadian^{1, 2}

1.
School of Chemical Engineering, Guizhou Minzu University, Guiyang 550025, China
2.
Key Laboratory of Low-Dimensional Materials and Environmental Ecological Governance, Guiyang 550025, China

Funds: Science and Technology Project of Guizhou Province (20201Y163; 2021051); Key Science and Technology Support Project of Guizhou Province (2021326); Department of Education of Guizhou Province Natural Science Project (2022161)

Received Date: 2023-05-10
Accepted Date: 2023-06-24
Rev Recd Date: 2023-06-10

Available Online: 2023-07-08

Publish Date: 2024-03-01

Abstract

Abstract

In order to solve the water contamination arises from heavy metal Pb(II), β-cyclodextrin modified magnetic palm fiber biochar (β-CD@PFMBC) was prepared with palm fiber as raw material by chemical coprecipitation method for efficient removal of Pb(II) from aqueous solution. The structure and morphology of the material were characterized by FTIR, XRD, BET, SEM, Raman and VSM. The adsorption properties of Pb(II) were analyzed through single factor experiment. The adsorption mechanism and recycling of Pb(II) were also explored. The results show that the specific surface area and the number of surface functional groups of β-CD@PFMBC increased compared with the pristine biochar. The adsorption process of Pb(II) can be better described by both the pseudo-second-order kinetic model and the Langmuir adsorption isotherm model, which indicates that the adsorption process is chemical adsorption and monolayer adsorption. According to the Langmuir isotherm model, the maximum theoretical adsorption capacity of β-CD@PFMBC at 303 K is 625.49 mg∙g^–1, which is significantly higher than that of the pristine biochar. Thermodynamic studies show that the adsorption is a spontaneous endothermic process. The oxygen-containing groups on the surface of β-CD@PFMBC produce surface complexation and electrostatic interaction with Pb(II). The removal ration remains above 79% after five cycles of adsorption-desorption. It can be expected that β-CD@PFMBC will be of potential application in removing of Pb(II) from aqueous solution.
- biochar,
- magnetism,
- β-cyclodextrin,
- adsorption,
- Pb(II),
- water contamination arises
Long Abstrsct
Innovation Points

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References(36)

References

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