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. 2021 Jun 28;11(7):1688. doi: 10.3390/nano11071688

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© 2021 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).

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Equilibrium studies of Cd²⁺ and PO₄³⁻ adsorption using the synthetic composite; effect of the initial concentration on the adsorption capacity (A), Freundlich isotherm model (B), Langmuir isotherm model (C), and Temkin isotherm model (D).