Synthesis of Fe3O4@mZrO2-Re (Re = Y/La/Ce) by Using Uniform Design, Surface Response Methodology, and Orthogonal Design & Its Application for As3+ and As5+ Removal

In this study, iron oxide (Fe3O4) was coated with ZrO2, and doped with three rare earth elements((Y/La/Ce), and a multi-staged rare earth doped zirconia adsorbent was prepared by using uniform design U14, Response Surface methodology, and orthogonal design, to remove As3+ and As5+ from the aqueous s...

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Bibliographic Details
Published in:Nanomaterials (Basel, Switzerland) Switzerland), 2021-08, Vol.11 (9), p.2177
Main Authors: Alam, Easar, Feng, Qiyan, Yang, Hong, Fan, Jiaxi, Mumtaz, Sameena, Begum, Farida
Format: Article
Language:English
Subjects:
Adsorbents
Adsorption
Aqueous solutions
Arsenic
arsenic (III & V) removal
Arsenic ions
Arsenic removal
Cerium
Curve fitting
Design
Drug dosages
Experiments
Human body
Iron oxides
Lanthanum
magnetic Fe3O4
Methods
Morphology
multi-staged doping
Nanomaterials
Pollutant removal
Porosity
Radiation
Rare earth elements
Reagents
Regeneration
Response surface methodology
Surface chemistry
surface response methodology
Synthesis
uniform design
Variables
Yttrium
Zirconia
Zirconium
Zirconium dioxide
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Summary:In this study, iron oxide (Fe3O4) was coated with ZrO2, and doped with three rare earth elements((Y/La/Ce), and a multi-staged rare earth doped zirconia adsorbent was prepared by using uniform design U14, Response Surface methodology, and orthogonal design, to remove As3+ and As5+ from the aqueous solution. Based on the results of TEM, EDS, XRD, FTIR, and N2-adsorption desorption test, the best molar ratio of Fe3O4:TMAOH:Zirconium butoxide:Y:La:Ce was selected as 1:12:11:1:0.02:0.08. The specific surface area and porosity was 263 m2/g, and 0.156 cm3/g, respectively. The isothermal curves and fitting equation parameters show that Langmuir model, and Redlich Peterson model fitted well. As per calculations of the Langmuir model, the highest adsorption capacities for As3+ and As5+ ions were recorded as 68.33 mg/g, 84.23 mg/g, respectively. The fitting curves and equations of the kinetic models favors the quasi second order kinetic model. Material regeneration was very effective, and even in the last cycle the regeneration capacities of both As3+ and As5+ were 75.15%, and 77.59%, respectively. Adsorption and regeneration results suggest that adsorbent has easy synthesis method, and reusable, so it can be used as a potential adsorbent for the removal of arsenic from aqueous solution.
ISSN:2079-4991
2079-4991
DOI:10.3390/nano11092177