Innovative pilot plant capacitive deionization for desalination brackish water

Abstract A semi-industrial demineralization facility was used in six CDI cells to desalinate in two steps. A desalination cycle lowered the feedwater salinity from 1 to 0.5 g/L and produced 200 l/h of demineralized water. This process may be repeated to increase efficiency. Initially, feedwater comm...

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Main Authors: Zaid S. Alotaibi, Khalid N. Alharbi, Yaseen Alharbi, Mohammed S. Almoiqli
Format: Article
Language:English
Published: SpringerOpen 2024-01-01
Series:Applied Water Science
Subjects:
Online Access:https://doi.org/10.1007/s13201-023-02083-1
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author Zaid S. Alotaibi
Khalid N. Alharbi
Yaseen Alharbi
Mohammed S. Almoiqli
author_facet Zaid S. Alotaibi
Khalid N. Alharbi
Yaseen Alharbi
Mohammed S. Almoiqli
author_sort Zaid S. Alotaibi
collection DOAJ
description Abstract A semi-industrial demineralization facility was used in six CDI cells to desalinate in two steps. A desalination cycle lowered the feedwater salinity from 1 to 0.5 g/L and produced 200 l/h of demineralized water. This process may be repeated to increase efficiency. Initially, feedwater commenced at 1 g/L. Monitoring both voltage and current during the salt ion removal indicated that CDI cells may recover 30% of the energy utilized. Furthermore, V–Q curves using charge and voltage measurements increased energy recovery by 30%. By cutting off the CDI cells' power source, the electrodes' operating voltage was recorded between 0.85 and 0.9 V, much lower than the external contacts' 1.2 V. The desalination system's efficiency could rise if the electrode voltage was measured and adjusted. In conclusion, storage tanks can provide desalinated water while minimizing water waste; hence, they should be installed. This study examined the physical–technical parameters of a CDI desalination system through experiments and several operational modes. Moreover, it revealed CDI desalination system improvements.
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spelling doaj.art-12d512cbdfc440ec80785b4d3ffdafd12024-03-05T19:54:46ZengSpringerOpenApplied Water Science2190-54872190-54952024-01-011421810.1007/s13201-023-02083-1Innovative pilot plant capacitive deionization for desalination brackish waterZaid S. Alotaibi0Khalid N. Alharbi1Yaseen Alharbi2Mohammed S. Almoiqli3National Center for Solar Energy, King Abdulaziz City for Science and Technology (KACST)Nuclear Technologies Institute, King Abdulaziz City for Science and Technology (KACST)National Center for Solar Energy, King Abdulaziz City for Science and Technology (KACST)Desalination Technologies Institute, King Abdulaziz City for Science and Technology (KACST)Abstract A semi-industrial demineralization facility was used in six CDI cells to desalinate in two steps. A desalination cycle lowered the feedwater salinity from 1 to 0.5 g/L and produced 200 l/h of demineralized water. This process may be repeated to increase efficiency. Initially, feedwater commenced at 1 g/L. Monitoring both voltage and current during the salt ion removal indicated that CDI cells may recover 30% of the energy utilized. Furthermore, V–Q curves using charge and voltage measurements increased energy recovery by 30%. By cutting off the CDI cells' power source, the electrodes' operating voltage was recorded between 0.85 and 0.9 V, much lower than the external contacts' 1.2 V. The desalination system's efficiency could rise if the electrode voltage was measured and adjusted. In conclusion, storage tanks can provide desalinated water while minimizing water waste; hence, they should be installed. This study examined the physical–technical parameters of a CDI desalination system through experiments and several operational modes. Moreover, it revealed CDI desalination system improvements.https://doi.org/10.1007/s13201-023-02083-1DesalinationSaline SolutionVolume DeionizationPorous ElectrodeIon SorptionDegree of Desalination
spellingShingle Zaid S. Alotaibi
Khalid N. Alharbi
Yaseen Alharbi
Mohammed S. Almoiqli
Innovative pilot plant capacitive deionization for desalination brackish water
Applied Water Science
Desalination
Saline Solution
Volume Deionization
Porous Electrode
Ion Sorption
Degree of Desalination
title Innovative pilot plant capacitive deionization for desalination brackish water
title_full Innovative pilot plant capacitive deionization for desalination brackish water
title_fullStr Innovative pilot plant capacitive deionization for desalination brackish water
title_full_unstemmed Innovative pilot plant capacitive deionization for desalination brackish water
title_short Innovative pilot plant capacitive deionization for desalination brackish water
title_sort innovative pilot plant capacitive deionization for desalination brackish water
topic Desalination
Saline Solution
Volume Deionization
Porous Electrode
Ion Sorption
Degree of Desalination
url https://doi.org/10.1007/s13201-023-02083-1
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