Logo image
Back
Influence of operating conditions and cathode parameters on desalination performance of hybrid CDI systems
Journal article   Open access   Peer reviewed

Influence of operating conditions and cathode parameters on desalination performance of hybrid CDI systems

Lutfi Agartan, Brendan Hayes-Oberst, Bryan W. Byles, Bilen Akuzum, Ekaterina Pomerantseva and E. Caglan Kumbur
Desalination, v 452, pp 1-8
15 Feb 2019
DOI: https://doi.org/10.1016/j.desal.2018.10.025
Featured in Collection :   UN Sustainable Development Goals @ Drexel
url
https://doi.org/10.1016/j.desal.2018.10.025View
Accepted (AM)Open Access (Publisher-Specific),  Open

Abstract

Electrosorption kinetics Hybrid capacitive deionization In-situ SAR vs SAC plot Water desalination α-MnO2 nanowires
The objective of this study is to understand the effects of operating conditions and cathode parameters on the salt removal performance of hybrid capacitive deionization systems (HCDI). Hence, the effects of half cycle length, flow rate, cathode thickness, and conductive additive loading in the cathode are systematically investigated. Hydrothermally synthesized α-MnO2 was selected as the active material in the cathode. Desalination results indicate notable dependence of HCDI performance on the investigated parameters. For instance, increasing half cycle length increases the salt adsorption capacity (SAC) by ~58% but decreases the peak salt adsorption rate (PSAR) by ~28%. On the other hand, increasing the flow rate leads to an increase of the SAC and PSAR by ~25% and ~115%, respectively. Increase in the cathode thickness also showed a notable decay in performance with 43% drop in SAC. The amount of conductive additive in the cathode was also investigated to observe the impact of electrical conductivity on the CDI performance. Salt adsorption capacity and rate of HCDI systems containing identical active materials show strong dependence on the operation conditions and cathode parameters, which suggests a necessity of developing an understanding of the impact of these conditions on the system performance. [Display omitted] •Rate performance of the HCDI setup strongly depends on the applied flow rate.•Effective delivery of ions to the electrodes strongly depends on the flow rate.•Increasing half cycle length, increases SAC at the expense of ASAR.•Efficient utilization of electrodes strongly depends on electronic conductivity.•Contribution of conductive additives to SAC is negligibly small.

Metrics

12 Record Views
49 citations in Web of Science
42 citations in Scopus

Details

UN Sustainable Development Goals (SDGs)

This publication has contributed to the advancement of the following goals:

#11 Sustainable Cities and Communities

InCites Highlights

Data related to this publication, from InCites Benchmarking & Analytics tool:

Web of Science research areas
Engineering, Chemical
Water Resources
Logo image