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Eggshell-Derived Magnetic CaAl Layered Double Hydroxides: Synthesis and Application as Methyl Orange Adsorbent

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Abstract:

In this study, CaAl-LDHs and magnetic-CaAl-LDHs were prepared through a straightforward co-precipitation method utilizing calcined eggshell as a sustainable calcium source. Physicochemical characterization via XRD, SEM, and FTIR revealed the microstructural properties of the synthesized materials. Results indicated that the Ca2+/Al3+ molar ratio was critical for optimizing methyl orange adsorption. The magnetite-incorporated variant demonstrated enhanced separability, while kinetic studies confirmed pseudo-second-order adsorption behavior for both adsorbents.

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Periodical:

Advances in Science and Technology (Volume 180)

Pages:

23-29

DOI:

https://doi.org/10.4028/p-TncP0F

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Online since:

July 2026

Authors:

Cheewita Suwanchawalit, Soontorn Suvokhiaw*

Keywords:

Kinetics Model, Layered Double Hydroxides, Magnetic, Methyl Orange Adsorbent

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© 2026 Trans Tech Publications Ltd. All Rights Reserved

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