Low-temperature plasma induced phosphate groups onto coffee residue-derived porous carbon for efficient U(VI) extraction

Zhongshan Chen; Xuan He; Qian Li; Hui Yang; Yang Liu; Lining Wu; Zhixin Liu; Baowei Hu; Xiangke Wang

doi:10.1016/j.jes.2021.10.003

Low-temperature plasma induced phosphate groups onto coffee residue-derived porous carbon for efficient U(VI) extraction

J Environ Sci (China). 2022 Dec:122:1-13. doi: 10.1016/j.jes.2021.10.003. Epub 2022 Jan 31.

Authors

Zhongshan Chen¹, Xuan He², Qian Li², Hui Yang², Yang Liu², Lining Wu³, Zhixin Liu⁴, Baowei Hu⁵, Xiangke Wang⁶

Affiliations

¹ School of Life Science, Shaoxing University, Shaoxing 312000, China; College of Environmental Science and Engineering, North China Electric Power University, Beijing 102206, China.
² College of Environmental Science and Engineering, North China Electric Power University, Beijing 102206, China.
³ School of Energy Power and Mechanical Engineering, North China Electric Power University, Beijing 102206, China.
⁴ School of Life Science, Shaoxing University, Shaoxing 312000, China.
⁵ School of Life Science, Shaoxing University, Shaoxing 312000, China. Electronic address: hbw@usx.edu.cn.
⁶ School of Life Science, Shaoxing University, Shaoxing 312000, China; College of Environmental Science and Engineering, North China Electric Power University, Beijing 102206, China. Electronic address: xkwang@ncepu.edu.cn.

PMID: 35717075
DOI: 10.1016/j.jes.2021.10.003

Abstract

For the continuous utilization of nuclear energy and efficient control of radioactive pollution, low-cost materials with high efficient U(VI) removal are of great importance. In this study, low temperature plasma method was applied for the successful modification of O-phosphorylethanolamine (O-PEA) on the porous carbon materials. The produced materials (Cafe/O-PEA) could adsorb U(VI) efficiently with the maximum sorption capacity of 648.54 mg/g at 1 hr, T=298 K, and pH=6.0, much higher than those of most carbon-based composites. U(VI) sorption was mainly controlled by strong surface complexation. From FTIR, SEM-EDS and XPS analyses, the sorption of U(VI) was related to the complexation with -NH₂, phosphate and -OH groups on Cafe/O-PEA. The low temperature plasma method was an efficient, environmentally friendly and low-cost method for surface modification of materials for the effective enrichment of U(VI) from aqueous solutions.

Keywords: Coffee residue; Low-temperature plasma modification; Porous carbon; U(VI).

MeSH terms

Adsorption
Carbon*
Coffee
Phosphates
Porosity
Temperature
Uranium*

Substances

Coffee
Phosphates
Uranium
Carbon