Energy Efficiency of Capacitive Deionization

Li Wang, J.E. Dykstra, Shihong Lin

Research output: Contribution to journalArticleAcademicpeer-review

5 Citations (Scopus)

Abstract

Capacitive deionization (CDI) as a class of electrochemical desalination has attracted fast-growing research interest in recent years. A significant part of this growing interest is arguably attributable to the premise that CDI is energy efficient and has the potential to outcompete other conventional desalination technologies. In this review, systematic evaluation of literature data reveals that while the absolute energy consumption of CDI is in general low, most existing CDI systems achieve limited energy efficiency from a thermodynamic perspective. We also analyze the causes for the relatively low energy efficiency and discuss factors that may lead to enhanced energy efficiency for CDI.

LanguageEnglish
Pages3366-3378
JournalEnvironmental Science and Technology
Volume53
Issue number7
DOIs
Publication statusPublished - 25 Feb 2019

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energy efficiency
Energy efficiency
Desalination
desalination
Energy utilization
thermodynamics
Thermodynamics
energy

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Wang, Li ; Dykstra, J.E. ; Lin, Shihong. / Energy Efficiency of Capacitive Deionization. In: Environmental Science and Technology. 2019 ; Vol. 53, No. 7. pp. 3366-3378.
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Energy Efficiency of Capacitive Deionization. / Wang, Li; Dykstra, J.E.; Lin, Shihong.

In: Environmental Science and Technology, Vol. 53, No. 7, 25.02.2019, p. 3366-3378.

Research output: Contribution to journalArticleAcademicpeer-review

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N2 - Capacitive deionization (CDI) as a class of electrochemical desalination has attracted fast-growing research interest in recent years. A significant part of this growing interest is arguably attributable to the premise that CDI is energy efficient and has the potential to outcompete other conventional desalination technologies. In this review, systematic evaluation of literature data reveals that while the absolute energy consumption of CDI is in general low, most existing CDI systems achieve limited energy efficiency from a thermodynamic perspective. We also analyze the causes for the relatively low energy efficiency and discuss factors that may lead to enhanced energy efficiency for CDI.

AB - Capacitive deionization (CDI) as a class of electrochemical desalination has attracted fast-growing research interest in recent years. A significant part of this growing interest is arguably attributable to the premise that CDI is energy efficient and has the potential to outcompete other conventional desalination technologies. In this review, systematic evaluation of literature data reveals that while the absolute energy consumption of CDI is in general low, most existing CDI systems achieve limited energy efficiency from a thermodynamic perspective. We also analyze the causes for the relatively low energy efficiency and discuss factors that may lead to enhanced energy efficiency for CDI.

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