Work

Energy Efficiency of Capacitive Deionization

Year: 2019

Type: review

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.

Source: Environmental Science & Technology

DOI: 10.1021/acs.est.8b04858

Authors: Li Wang, J. E. Dykstra, Shihong Lin

Institutions: Vanderbilt University, Wageningen University & Research

Language: English

Topic: Membrane-based Ion Separation Techniques

Subfield: Filtration and Separation

Field: Chemical Engineering

Domain: Physical Sciences

SDGs: Affordable and clean energy, Clean water and sanitation

Open Access status: green

Funder: Oak Ridge Associated Universities