Highly enhanced adsorption performance to uranium(VI) by facile synthesized hydroxyapatite aerogel

Ting Xiong; Qichen Li; Jun Liao; Yong Zhang; Wenkun Zhu

doi:10.1016/j.jhazmat.2021.127184

Highly enhanced adsorption performance to uranium(VI) by facile synthesized hydroxyapatite aerogel

J Hazard Mater. 2022 Feb 5;423(Pt B):127184. doi: 10.1016/j.jhazmat.2021.127184. Epub 2021 Sep 10.

Authors

Ting Xiong¹, Qichen Li¹, Jun Liao², Yong Zhang³, Wenkun Zhu⁴

Affiliations

¹ State Key Laboratory of Environment-friendly Energy Materials, Sichuan Co-Innovation Center for New Energetic Materials, National Co-innovation Center for Nuclear Waste Disposal and Environmental Safety, Nuclear Waste and Environmental Safety Key Laboratory of Defense, School of National Defence Science & Technology, Southwest University of Science and Technology, Mianyang 621010, PR China.
² State Key Laboratory of Environment-friendly Energy Materials, Sichuan Co-Innovation Center for New Energetic Materials, National Co-innovation Center for Nuclear Waste Disposal and Environmental Safety, Nuclear Waste and Environmental Safety Key Laboratory of Defense, School of National Defence Science & Technology, Southwest University of Science and Technology, Mianyang 621010, PR China; Division of Target Science and Fabrication, Research Center of Laser Fusion, China Academy of Engineering Physics, P. O. Box 919-987, Mianyang 621900, PR China.
³ State Key Laboratory of Environment-friendly Energy Materials, Sichuan Co-Innovation Center for New Energetic Materials, National Co-innovation Center for Nuclear Waste Disposal and Environmental Safety, Nuclear Waste and Environmental Safety Key Laboratory of Defense, School of National Defence Science & Technology, Southwest University of Science and Technology, Mianyang 621010, PR China. Electronic address: yongpandm@swust.edu.cn.
⁴ State Key Laboratory of Environment-friendly Energy Materials, Sichuan Co-Innovation Center for New Energetic Materials, National Co-innovation Center for Nuclear Waste Disposal and Environmental Safety, Nuclear Waste and Environmental Safety Key Laboratory of Defense, School of National Defence Science & Technology, Southwest University of Science and Technology, Mianyang 621010, PR China. Electronic address: zhuwenkun@swust.edu.cn.

PMID: 34536844
DOI: 10.1016/j.jhazmat.2021.127184

Abstract

In order to protect environment and save uranium resources, it was necessary to find a highly efficient adsorbent for uranium recovery from wastewater. In this work, we used a freeze-drying-calcination method to synthesize HAP aerogel to effectively remove uranium. Compared with commercially available nano-hydroxyapatite, HAP aerogel presented better adsorption performance. This was because the as-prepared HAP aerogel presented continuous porous structure, which could provide more active sites for the adsorption to uranium. The uranium removal efficiency of HAP aerogel arrived 99.4% within 10 min and the maximum adsorption capacity was up to 2087.6 mg g^-1 at pH = 4.0 and 298 K. In addition, the immobilization of uranium on HAP aerogel was chemisorption, which was probably due to adsorption, dissolution-precipitation and ions exchange. These results indicated that the as-prepared HAP aerogel could be widely used as a high efficiency and potential adsorbent for the treatment of uranium-containing wastewater in the future.

Keywords: Adsorption; Freeze-drying-calcination; Hydroxyapatite; Uranium.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Adsorption
Durapatite
Ions
Porosity
Uranium*

Substances

Ions
Uranium
Durapatite