Corrigendum to “Energetic performance optimization of a capacitive deionization system operating with transient cycles and brackish water” [Desalination 314 (2013) 130–138]

A hybrid capacitive deionization and humidification-dehumidification (CDI–HDH) desalination system is theoretically investigated for the desalination of brackish water. The CDI system works with two basic operations: adsorption and regeneration. During adsorption, water is desalted, and during the regeneration process the ions from electrodes are detached and flow out as wastewater, which is higher in salt concentration. This wastewater still contains water but cannot be treated again via the CDI unit because CDI cannot treat higher-salinity waters. The discarding of wastewater from CDI is not a good option, since every drop of water is precious. Therefore, CDI wastewater is treated using waste heat in a process that is less sensitive to high salt concentrations, such as humidification-dehumidification (HDH) desalination. Therefore, in this study, CDI wastewater was treated using the HDH system. Using the combined system (CDI–HDH), this study theoretically investigated brackish water of various salt concentrations and flow rates at the CDI inlet. A maximum distillate of 1079 L/day was achieved from the combined system and the highest recovery rate achieved was 24.90% from the HDH unit. Additionally, two renewable energy sources with novel ideas are recommended to power the CDI–HDH system.

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Nanoarchitectured metal–organic framework/polypyrrole hybrids for brackish water desalination using capacitive deionization

Materials Horizons ◽

10.1039/c9mh00306a ◽

2019 ◽

Vol 6 (7) ◽

pp. 1433-1437 ◽

Cited By ~ 60

Author(s):

Ziming Wang ◽

Xingtao Xu ◽

Jeonghun Kim ◽

Victor Malgras ◽

Ran Mo ◽

...

Keyword(s):

Brackish Water ◽

Metal Organic Framework ◽

Water Desalination ◽

Capacitive Deionization ◽

Metal Organic ◽

First Time ◽

Organic Framework

Metal–organic framework/polypyrrole hybrids are synthesized and directly used in capacitive deionization for the first time.

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Rationale Design of Ion-Exchange Membranes for Low Energy Brackish Water Desalination Via Membrane Capacitive Deionization

ECS Meeting Abstracts ◽

10.1149/ma2017-02/54/2273 ◽

2017 ◽

Keyword(s):

Ion Exchange ◽

Brackish Water ◽

Water Desalination ◽

Low Energy ◽

Ion Exchange Membranes ◽

Capacitive Deionization

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Ion-exchange membrane capacitive deionization: A new strategy for brackish water desalination

Desalination ◽

10.1016/j.desal.2011.02.027 ◽

2011 ◽

Vol 275 (1-3) ◽

pp. 62-66 ◽

Cited By ~ 166

Author(s):

Haibo Li ◽

Linda Zou

Keyword(s):

Ion Exchange ◽

Brackish Water ◽

Water Desalination ◽

Ion Exchange Membrane ◽

Capacitive Deionization ◽

New Strategy ◽

Exchange Membrane

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The effect of intermittent operation on a wind-powered membrane system for brackish water desalination

Water Science & Technology ◽

10.2166/wst.2012.912 ◽

2012 ◽

Vol 65 (5) ◽

pp. 867-874 ◽

Cited By ~ 17

Author(s):

G. L. Park ◽

A. I. Schäfer ◽

B. S. Richards

Keyword(s):

Water Quality ◽

Brackish Water ◽

Energy Resource ◽

Membrane System ◽

Water Desalination ◽

Short Term ◽

Intermittent Operation ◽

Average Water ◽

Term Storage ◽

System Operating

Renewable energy powered membrane systems that are directly-connected must take account of both the inherent fluctuations and the intermittency of the energy resource. In order to determine the effect of intermittent operation, a membrane system was tested with variables of (i) amplitude from 60 to 300 W and (ii) length of time with no power from 0.5 to 3 min. This was performed over one hour periods with six on/off cycles to simulate the system operating under intermittent operation for short periods of time when directly-connected to a small wind turbine. The setup used a Filmtec BW30-4040 brackish water reverse osmosis membrane with feed waters of 2,750 mg/L and 5,500 mg/L NaCl. The results showed that the membrane system produced potable water under the majority of intermittency experiments performed. There was a relatively large increase in the average salt concentration of the permeate, especially when the system was off for shorter periods of time (0.5–1 min). Longer periods of no power (1–3 min) did not have as significant an effect on the average water quality. This is important when the need for energy buffering or short term storage is considered for these systems as it shows the potential for improving the overall flux and water quality using temporary energy storage.

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Towards Electrochemical Water Desalination Techniques: A Review on Capacitive Deionization, Membrane Capacitive Deionization and Flow Capacitive Deionization

Membranes ◽

10.3390/membranes10050096 ◽

2020 ◽

Vol 10 (5) ◽

pp. 96 ◽

Cited By ~ 4

Author(s):

Gbenro Folaranmi ◽

Mikhael Bechelany ◽

Philippe Sistat ◽

Marc Cretin ◽

Francois Zaviska

Keyword(s):

Brackish Water ◽

Research Area ◽

Water Desalination ◽

Ion Adsorption ◽

Capacitive Deionization ◽

Major Research ◽

Modus Operandi ◽

Solvated Ions ◽

The 1960S ◽

Simple Potential

Electrochemical water desalination has been a major research area since the 1960s with the development of capacitive deionization technique. For the latter, its modus operandi lies in temporary salt ion adsorption when a simple potential difference (1.0–1.4 V) of about 1.2 V is supplied to the system to temporarily create an electric field that drives the ions to their different polarized poles and subsequently desorb these solvated ions when potential is switched off. Capacitive deionization targets/extracts the solutes instead of the solvent and thus consumes less energy and is highly effective for brackish water. This paper reviews Capacitive Deionization (mechanism of operation, sustainability, optimization processes, and shortcomings) with extension to its counterparts (Membrane Capacitive Deionization and Flow Capacitive Deionization).

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