TY - JOUR
T1 - Improving the feasibility and applicability of flow-electrode capacitive deionization (FCDI)
T2 - Review of process optimization and energy efficiency
AU - Shin, Yong Uk
AU - Lim, Jihun
AU - Boo, Chanhee
AU - Hong, Seungkwan
N1 - Funding Information:
This work was supported by the Korea Environment Industry & Technology Institute (KEITI) through Industrial Facilities & Infrastructure Research Program, funded by Korea Ministry of Environment (MOE) (1485016424). Also, C. Boo acknowledges the support from the KIST Institutional Program (Project No. 2E30510).
Funding Information:
This work was supported by the Korea Environment Industry & Technology Institute (KEITI) through Industrial Facilities & Infrastructure Research Program, funded by Korea Ministry of Environment (MOE) ( 1485016424 ). Also, C. Boo acknowledges the support from the KIST Institutional Program (Project No. 2E30510 ).
Publisher Copyright:
© 2021 Elsevier B.V.
PY - 2021/4/15
Y1 - 2021/4/15
N2 - Flow-electrode capacitive deionization (FCDI) is a new electrochemical-based desalination technology that addresses the limitations of preceding CDI processes through the use of a stationary carbon electrode and ion-exchange membrane. As with conventional CDI configurations, non-Faradaic reactions (i.e., ion electrosorption) of the electric double layer model is the principal ion separation mechanism of FCDI. This technology also offers the unique ability for continuous ion/salt separation by circumventing constraints with electrode saturation. This paper reviews recent advances in FCDI, discusses the feasibility and applicability of this technique, and suggests potential niche applications for saline water/wastewater treatment and resource recovery. Additionally, it also critically discusses factors that deteriorate FCDI performance, operating conditions, process energy efficiency, and optimization of the electrode, electrolyte, and cell design. The insights from this review will shed light on directions for future FCDI research and inform the implementation of FCDI technology.
AB - Flow-electrode capacitive deionization (FCDI) is a new electrochemical-based desalination technology that addresses the limitations of preceding CDI processes through the use of a stationary carbon electrode and ion-exchange membrane. As with conventional CDI configurations, non-Faradaic reactions (i.e., ion electrosorption) of the electric double layer model is the principal ion separation mechanism of FCDI. This technology also offers the unique ability for continuous ion/salt separation by circumventing constraints with electrode saturation. This paper reviews recent advances in FCDI, discusses the feasibility and applicability of this technique, and suggests potential niche applications for saline water/wastewater treatment and resource recovery. Additionally, it also critically discusses factors that deteriorate FCDI performance, operating conditions, process energy efficiency, and optimization of the electrode, electrolyte, and cell design. The insights from this review will shed light on directions for future FCDI research and inform the implementation of FCDI technology.
KW - Desalination
KW - Energy efficiency
KW - Flow electrode capacitive deionization
KW - Niche application
KW - Process optimization
UR - http://www.scopus.com/inward/record.url?scp=85099382785&partnerID=8YFLogxK
U2 - 10.1016/j.desal.2021.114930
DO - 10.1016/j.desal.2021.114930
M3 - Review article
AN - SCOPUS:85099382785
SN - 0011-9164
VL - 502
JO - Desalination
JF - Desalination
M1 - 114930
ER -
