Advances in efficient desalination technology of capacitive deionization for water recycling
Yuhao Tong,
Shuang Zhou,
Jun Zhou,
Guanteng Zhang,
Xiaolin Li,
Chunxia Zhao,
Pengyan Liu
Affiliations
Yuhao Tong
College of Chemistry and Environmental Science, Hebei University, Institute of Life Science and Green Development, Hebei University, Key Laboratory of Analytical Science and Technology of Hebei Province, Baoding 071002, China
Shuang Zhou
College of Chemistry and Environmental Science, Hebei University, Institute of Life Science and Green Development, Hebei University, Key Laboratory of Analytical Science and Technology of Hebei Province, Baoding 071002, China
Jun Zhou
College of Chemistry and Environmental Science, Hebei University, Institute of Life Science and Green Development, Hebei University, Key Laboratory of Analytical Science and Technology of Hebei Province, Baoding 071002, China
Guanteng Zhang
College of Chemistry and Environmental Science, Hebei University, Institute of Life Science and Green Development, Hebei University, Key Laboratory of Analytical Science and Technology of Hebei Province, Baoding 071002, China
Xiaolin Li
College of Chemistry and Environmental Science, Hebei University, Institute of Life Science and Green Development, Hebei University, Key Laboratory of Analytical Science and Technology of Hebei Province, Baoding 071002, China
Chunxia Zhao
College of Chemistry and Environmental Science, Hebei University, Institute of Life Science and Green Development, Hebei University, Key Laboratory of Analytical Science and Technology of Hebei Province, Baoding 071002, China
Pengyan Liu
College of Chemistry and Environmental Science, Hebei University, Institute of Life Science and Green Development, Hebei University, Key Laboratory of Analytical Science and Technology of Hebei Province, Baoding 071002, China
Available freshwater resources are becoming harder to obtain due to climate change, population growth, industrial development, and water pollution. The main technologies in the field of wastewater desalination include reverse osmosis, electrodialysis, thermal distillation, and adsorption etc. Capacitive deionization technology (CDI) belongs to a novel electrochemical desalination technology with low energy consumption and low environmental impact, simple equipment structure and convenient operation. With the importance of wastewater desalination highlighted, some great technological progress of CDI has been made in electrode materials, reactor structure and the hybrid process. In this paper, the development of CDI technology was expounded from three aspects to achieve the goal of strong adaptability, low cost and strong adsorption capacity by analysis of the latest research papers. Corresponding improved methods of CDI are summarized to solve the main technology bottlenecks such as the inefficient and vulnerable electrode materials, low selectivity and unreasonable unit structure, and limitations of single CDI unit for promoting the continuous development of CDI technology. HIGHLIGHTS The main technology bottlenecks of CDI were analyzed from three aspects.; Review the development of CDI based on electrode material, novel process and hybrid process.; New electrode materials are introduced and analyzed for the future development of CDI.; The energy consumption of novel FCDI-NF hybrid process is significantly reduced.;
