Category Ranking
98%
Total Visits
921
Avg Visit Duration
2 minutes
Citations
20
Article Abstract
Capacitive deionization (CDI) is one of the emerging desalination technologies that attracted much attention in the last years as a low-cost, energy-efficient, and environmentally-friendly alternative to other desalination technologies, such as multi-stage flash desalination (MSF) and multiple effect distillation (MED). The implementation of faradaic electrode materials is a promising method for enhancing CDI systems' performance by achieving higher salt removal characteristics, lower energy consumption, and better ion selectivity. Therefore, a novel CDI technology named Faradaic CDI (FCDI) that implements faradaic electrode materials arose as a high-performance CDI cell design. In this work, the application of FCDI cells in desalination and wastewater treatment systems is reviewed. First, the progress done on using various FCDI systems for saline water desalination is summarized and discussed. Next, the application of FCDI in wastewater treatment applications and selective ion removal is presented. A thorough comparison between FCDI and conventional carbon-based CDI is carried out in terms of working principle, electrode material's cost, salt removal performance, energy consumption, advantages, and disadvantages. Finally, future research consideration regarding FCDI technology is included to drive this technology closer towards practical application.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.chemosphere.2021.130001 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Carbon particle aggregation for enhanced flow capacitive deionization.
Chem Commun (Camb)
September 2025
The Institute of Technological Sciences, MOE Key Laboratory of Hydraulic Machinery Transients, Wuhan University, Wuhan 430072, China.
Flow electrode capacitive deionization is governed by particle dynamics, which are strongly influenced by surface properties and flow conditions. This study shows that carbon particles with lower surface charge aggregate more rapidly into larger clusters, significantly enhancing desalination rates and achieving current efficiencies above 90%, offering guidance for advancing capacitive deionization systems.
View Article and Find Full Text PDFExploring a Porous Biochar-Based Capacitive Deionization Device for Phosphogypsum Wastewater Treatment in Undergraduate Experimental Teaching: Understanding, Development, and Practice.
ACS Omega
September 2025
Wuhan NARI Limited Liability Company, State Grid Electric Power Research Institute, Wuhan 430074, China.
Capacitive deionization (CDI) is a crucial technique for industries managing liquid chemical waste, requiring efficient electrode materials to ensure optimal performance. This study presents a novel undergraduate experimental teaching framework that integrates the understanding, development, and practical application of porous biochar-based CDI systems. Designed to support both students and educators, the curriculum guides learners through the synthesis of biochar electrodes via biomass pyrolysis and the assembly of CDI devices for treating phosphogypsum wastewater.
View Article and Find Full Text PDFEnvironmental-friendly modification of porous biochar via KFeO as a capacitive deionization electrode material.
Environ Res
August 2025
College of Mechanical and Electrical Engineering, Henan Agricultural University, Zhengzhou, 450002, China; Key Laboratory of New Materials and Facilities for Rural Renewable Energy, Ministry of Agriculture & Rural Affairs, Zhengzhou, 450002, China.
Capacitive deionization (CDI) is considered a promising technology for desalination, and the preparation of electrode materials with high specific surface area, good hydrophilicity, and porous structure can facilitate the improvement of CDI performance. However, existing research lacks a porous, environmentally friendly biochar electrode and in-depth stability studies. Herein, porous carbon (RSK-x) was fabricated using rice straw as the raw material and KFeO as the activator and modifier.
View Article and Find Full Text PDFEnhanced struvite production via membrane capacitive deionization and electrolysis: interference of humic acid and calcium.
Environ Technol
August 2025
Department of Environmental Engineering, Chung Yuan Christian University, Chung-Li, Taiwan.
This study examined struvite crystal formation for nutrient recovery in the presence of coexisting cations and organic substances. Coupled membrane capacitive deionization (MCDI) with sacrificial magnesium anode electrolysis was performed to produce struvite crystals from synthetic wastewater containing ammonium, phosphate, sodium, calcium, and humic acid (HA). In this way, MCDI was employed to adsorb coexisting cations onto the activated carbon (AC) electrode and retain and ions in the effluent.
View Article and Find Full Text PDFCu/CuO@polyvinyl alcohol/carbon nanotube conductive hydrogel for chloride ion removal in capacitive deionization.
J Colloid Interface Sci
August 2025
Research Center for Environmental Functional Materials, State Key Laboratory of Water Pollution Control and Green Resource Recycling, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, PR China; Water Resources and Water Environment Engineering Technology Center, S
CuO, as a cost-effective chloride ion (Cl) storage electrode material, has shown great potential in Cl removal applications. However, in the electrochemical process, CuO as the anode is easily oxidized and dissolved by free copper ions (Cu), leading to the loss of copper components and causing electrode performance degradation. In this work, we introduced a three-dimensional (3D) self-supporting polyvinyl alcohol/carbon nanotube (PVA/CNTs) conductive hydrogel as the carrier of CuO for capacitive deionization (CDI).
View Article and Find Full Text PDF