Evaluation of the efficient fluoride removal of porous CeO2/HAP: Performance and mechanism study

IF 8.1 1区工程技术 Q1 ENGINEERING, CHEMICAL Separation and Purification Technology Pub Date : 2025-03-18 DOI:10.1016/j.seppur.2025.132527

Yiming Zou, Dewei Diao, Huimin Zhang, Zhiling Qiu, Yaoting Wang, Zhangjian Qian, Haochen Ding, Jie Yang, Xin Xiao

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Abstract

In this study, a CeO₂/HAP heterostructure was synthesized for the rapid capture of fluoride ions from water. The adsorbent was characterized using SEM, TEM, XRD, BET, and XPS. The response surface methodology was employed to optimize the parameters of the three influencing factors, including concentration, pH value, and contact time. The experimental results indicated that the pH value of the solution was a crucial influencing factor for the adsorption of fluorine by the adsorbent, with a maximum adsorption capacity of 44.65 mg g⁻¹. The kinetic results were in accordance with the pseudo-second-order model, and the adsorption isotherm followed the Freundlich model. DFT analysis revealed that the CeO₂/HAP heterostructure is more favorable for fluoride adsorption, with an adsorption energy of −1.573 eV. To verify the feasibility of CeO₂/HAP for commercial applications, five reusability tests were conducted, which demonstrated that CeO₂/HAP is an efficient, environmentally friendly, and cost-effective adsorbent.

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来源期刊

Separation and Purification Technology 工程技术-工程：化工

CiteScore

14.00

自引率

12.80%

发文量

2347

审稿时长

43 days

期刊介绍： Separation and Purification Technology is a premier journal committed to sharing innovative methods for separation and purification in chemical and environmental engineering, encompassing both homogeneous solutions and heterogeneous mixtures. Our scope includes the separation and/or purification of liquids, vapors, and gases, as well as carbon capture and separation techniques. However, it's important to note that methods solely intended for analytical purposes are not within the scope of the journal. Additionally, disciplines such as soil science, polymer science, and metallurgy fall outside the purview of Separation and Purification Technology. Join us in advancing the field of separation and purification methods for sustainable solutions in chemical and environmental engineering.