Facile synthesis of low-cost MnPO4 with hollow grape-like clusters for rapid removal uranium from wastewater

Lin Zhao; Shiyong Wang; Haohong Zhuang; Bing Lu; Lingna Sun; Gang Wang; Jieshan Qiu

doi:10.1016/j.jhazmat.2022.128894

Facile synthesis of low-cost MnPO₄ with hollow grape-like clusters for rapid removal uranium from wastewater

J Hazard Mater. 2022 Jul 15:434:128894. doi: 10.1016/j.jhazmat.2022.128894. Epub 2022 Apr 14.

Authors

Lin Zhao¹, Shiyong Wang², Haohong Zhuang³, Bing Lu⁴, Lingna Sun⁵, Gang Wang⁶, Jieshan Qiu⁷

Affiliations

¹ School of Environment and Civil Engineering, Dongguan University of Technology, Dongguan 523106, Guangdong, China; College of Chemical and Environmental Engineering, Shenzhen University, Shenzhen 518060, China. Electronic address: zhaolin9612@163.com.
² School of Environment and Civil Engineering, Dongguan University of Technology, Dongguan 523106, Guangdong, China. Electronic address: wsyongcqu@126.com.
³ School of Environment and Civil Engineering, Dongguan University of Technology, Dongguan 523106, Guangdong, China. Electronic address: zhh15767015513@163.com.
⁴ School of Environment and Civil Engineering, Dongguan University of Technology, Dongguan 523106, Guangdong, China. Electronic address: lubingyy2020@126.com.
⁵ College of Chemical and Environmental Engineering, Shenzhen University, Shenzhen 518060, China. Electronic address: sunln@szu.edu.cn.
⁶ School of Environment and Civil Engineering, Dongguan University of Technology, Dongguan 523106, Guangdong, China. Electronic address: wghy1979@163.com.
⁷ College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China. Electronic address: qiujs@mail.buct.edu.cn.

PMID: 35447534
DOI: 10.1016/j.jhazmat.2022.128894

Abstract

In order to deal with the environmental resource problems caused by nuclear pollution and uranium mine wastewater, it is particularly important to develop uranium removal adsorbent materials with low cost, high efficiency and controllable rapid preparation. In this work, the hollow grape-like manganese phosphate clusters (h-MnPO₄) were synthesized in 4 h by in-situ etching without template at room temperature, which can quickly and effectively remove uranium ions from wastewater. Due to the reasonable hollow structure, more effective adsorption sites are exposed. The obtained sample h-MnPO₄-200 reaches adsorption equilibrium in 1 h and can remove 97.20% uranyl ions (initial concentration is 100 mg L^-1). Under the condition of 25 ℃ and pH= 4, the maximum adsorption capacity of h-MnPO₄-200 for uranium was 751.88 mg g^-1. The FT-IR, XPS and XRD analysis showed that -OH and PO₄^3- groups played a key role in the adsorption process. Thanks to the synergistic adsorption mechanism of surface complexation and dissolution-precipitation, h-MnPO₄-200 maintained a high removal rate in the presence of competitive anions and cations. In a word, h-MnPO₄-200 can be rapidly synthesized through a facile and low-cost method and has a great application prospect in the practical emergency treatment of uranium-containing wastewater.

Keywords: In-situ etching; MnPO(4); Radioactive wastewater treatment; Uranium adsorption.

Publication types

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

MeSH terms

Adsorption
Cations / analysis
Spectroscopy, Fourier Transform Infrared
Uranium* / chemistry
Vitis*
Wastewater / analysis

Substances

Cations
Waste Water
Uranium