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Efficient Fluoride Removal Using a CeO₂/Attapulgite (ATP) Composite.

Jianguo Zhu¹, Yeting Chen¹, Xin Xiao²

¹Institute of Pharmaceutical and Biomaterials, Lianyungang Normal College, Lianyungang 222006, China.

Nanomaterials (Basel, Switzerland)

|March 12, 2025

Summary

A novel cerium oxide/attapulgite (CeO₂/ATP) composite effectively removes fluoride from water. This adsorbent shows high capacity and good reusability, making it promising for water treatment applications.

Keywords:

adsorption fluoride removal hydrothermal synthesis

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Published on: October 25, 2017

Area of Science:

Materials Science
Environmental Science
Chemistry

Background:

Excess fluoride in drinking water poses significant health risks.
Conventional water treatment methods for fluoride removal can be inefficient or costly.

Purpose of the Study:

To synthesize and characterize a CeO₂/ATP composite for efficient fluoride removal.
To evaluate the adsorption performance and reusability of the composite for practical water treatment.

Main Methods:

Hydrothermal synthesis of CeO₂/ATP composite.
Characterization using SEM, TEM, XRD, and XPS.
Fluoride adsorption experiments (kinetics and isotherms).

Main Results:

The CeO₂/ATP composite exhibited a maximum fluoride adsorption capacity of 47.84 mg/g.
Adsorption followed pseudo-second-order kinetics and Langmuir isotherm models, indicating chemisorption.
The composite maintained good adsorption capacity (30.2 mg/g) after five reuses.

Conclusions:

The CeO₂/ATP composite is a highly effective adsorbent for fluoride removal from water.
Its strong adsorption capacity and recyclability indicate significant potential for commercial water treatment applications.