Simultaneous removal of tetracycline and copper ions from wastewater by flow-electrode capacitive deionization

Peipei Tong; Zhenyu Hang; Weihuang Zhu; Zhihua Li

doi:10.1080/09593330.2023.2298665

Simultaneous removal of tetracycline and copper ions from wastewater by flow-electrode capacitive deionization

Environ Technol. 2023 Dec 29:1-8. doi: 10.1080/09593330.2023.2298665. Online ahead of print.

Authors

Peipei Tong^{1

2}, Zhenyu Hang^{1

2}, Weihuang Zhu^{1

2}, Zhihua Li^{1

2}

Affiliations

¹ Key Laboratory of Northwest Water Resource, Environment, and Ecology, MOE, School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an, People's Republic of China.
² Xi'an Key Laboratory of Intelligent Equipment Technology for Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an, People's Republic of China.

PMID: 38158763
DOI: 10.1080/09593330.2023.2298665

Abstract

ABSTRACTTo effectively solve the problem of tetracycline (TC) and Cu²⁺ contamination in wastewater, this study innovatively proposed a low-energy flow-electrode capacitive deionization (FCDI) technology to simultaneously remove TC and Cu²⁺ from wastewater. The removal efficiencies of TC and Cu²⁺ using FCDI was investigated under various voltages, electrode flow rates, influent flow rates, and electrode liquid concentrations. The results showed that the removal efficiency of TC and Cu²⁺ was 60.78% and 84.43%, respectively. The energy consumption for TC and Cu²⁺ removal was only 1.76 and 1.10 kWh kg^-1, which was lower than other electrochemical systems. The ion removal performance of the FCDI system remained stable after six cycles of continuous operation. These findings demonstrated the promising potential of FCDI as an innovative technology for the simultaneous removal of TC and Cu²⁺, presenting a significant prospects for application in the water treatment field.

Keywords: Flow-electrode capacitive deionization; copper ions; energy consumption; tetracycline; wastewater treatment.