Efficient desalination of brackish ground water via a novel capacitive deionization cell using nanoporous activated carbon cloth electrodes

K. Laxman, M. T Z Myint, M. Al Abri, L. Al-Gharibi, B. Al Namani, H. Bourdoucen, J. Dutta

Research output: Contribution to journalArticle

Abstract

Sea water intrusion in ground water sources has made brackish water desalination a necessity in Oman. The application of capacitive deionization (CDI) for the deionization of ground water samples from wells in Al-Musanaah Wilayat is proposed and demonstrated. A CDI cell is fabricated using nanoporous activated carbon cloth (ACC) as the electrodes and is shown to be power efficient for desalting ground water samples with total dissolved solids (TDS) of up to 4,000 mg/l. The CDI cell was able to remove up to 73% of the ionic scaling and fouling contaminants from brackish water samples. The power consumption for deionization of brackish water was estimated to be 1 kWh/m3 of desalinated water, which is much lower than the power required to process water with equivalent TDS by the reverse osmosis processes. The CDI process is elaborated, and observations and analysis of the ion adsorption characteristics and electrical properties of the capacitive cell are elucidated.

Original languageEnglish
Pages (from-to)22-31
Number of pages10
JournalJournal of Engineering Research
Volume12
Issue number2
Publication statusPublished - 2015

Fingerprint

Desalination
Activated carbon
Groundwater
Electrodes
Water
Salt removal
Reverse osmosis
Fouling
Electric properties
Electric power utilization
Impurities
Adsorption
Ions

Keywords

  • Activated carbon cloth
  • Brackish water desalination
  • Capacitive deionization

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Efficient desalination of brackish ground water via a novel capacitive deionization cell using nanoporous activated carbon cloth electrodes. / Laxman, K.; Myint, M. T Z; Al Abri, M.; Al-Gharibi, L.; Al Namani, B.; Bourdoucen, H.; Dutta, J.

In: Journal of Engineering Research, Vol. 12, No. 2, 2015, p. 22-31.

Research output: Contribution to journalArticle

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AU - Laxman, K.

AU - Myint, M. T Z

AU - Al Abri, M.

AU - Al-Gharibi, L.

AU - Al Namani, B.

AU - Bourdoucen, H.

AU - Dutta, J.

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N2 - Sea water intrusion in ground water sources has made brackish water desalination a necessity in Oman. The application of capacitive deionization (CDI) for the deionization of ground water samples from wells in Al-Musanaah Wilayat is proposed and demonstrated. A CDI cell is fabricated using nanoporous activated carbon cloth (ACC) as the electrodes and is shown to be power efficient for desalting ground water samples with total dissolved solids (TDS) of up to 4,000 mg/l. The CDI cell was able to remove up to 73% of the ionic scaling and fouling contaminants from brackish water samples. The power consumption for deionization of brackish water was estimated to be 1 kWh/m3 of desalinated water, which is much lower than the power required to process water with equivalent TDS by the reverse osmosis processes. The CDI process is elaborated, and observations and analysis of the ion adsorption characteristics and electrical properties of the capacitive cell are elucidated.

AB - Sea water intrusion in ground water sources has made brackish water desalination a necessity in Oman. The application of capacitive deionization (CDI) for the deionization of ground water samples from wells in Al-Musanaah Wilayat is proposed and demonstrated. A CDI cell is fabricated using nanoporous activated carbon cloth (ACC) as the electrodes and is shown to be power efficient for desalting ground water samples with total dissolved solids (TDS) of up to 4,000 mg/l. The CDI cell was able to remove up to 73% of the ionic scaling and fouling contaminants from brackish water samples. The power consumption for deionization of brackish water was estimated to be 1 kWh/m3 of desalinated water, which is much lower than the power required to process water with equivalent TDS by the reverse osmosis processes. The CDI process is elaborated, and observations and analysis of the ion adsorption characteristics and electrical properties of the capacitive cell are elucidated.

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