Electro-deionization (EDI) technology for enhanced water treatment and desalination: A review

Khan，Zaheen Ullah1; Moronshing，Maku1,7; Shestakova，Marina2; Al-Othman，Ahmed3; Sillanpää，Mika4,5,6,7; Zhan，Zhengshuo1; Song，Bingnan1; Lei，Yang1

2023-02-15

10.1016/j.desal.2022.116254

DESALINATION   Impact Factor & Quartile

0011-9164

1873-4464

Extensive industrialization, agricultural development, and continued population growth have triggered economic and physical water scarcity. Advanced water treatment and desalination technologies with high ion removal capacity and energy efficiency are highly desirable to mitigate water pollution and shortage. Electrochemical separation techniques have exciting features such as chemical selectivity, versatility, compact size, decreased generation of secondary waste, and broad applicability in ion separation and water purification. Electrodeionization (EDI), which combines the synergistic properties of ion exchange resins (ion exchange, IX) and ion-selective membranes (Electrodialysis, ED), is one such promising electrochemical process. Herein, we briefly introduce the fundamentals of the EDI process, including its configuration, working principle, ion removal mechanism, and critical evaluation metrics for EDI performance. Various advantages and drawbacks of EDI are also discussed, along with scientific strategies to mitigate the bottleneck and improve the process. Furthermore, novel tailored applications are specifically addressed, including heavy metal ion removal, water desalination, and low-level radioactive waste removal. On top of that, the review also compares EDI with other conventional techniques regarding removal efficiency, energy consumption, and resin regeneration. Lastly, the current global market, remaining challenges, and potential research directions are summarized to offer strategies for future development in this promising field.

Electrochemical process Electrodeionization Heavy metals Ion-exchange resins Ion-selective membranes Ultrapure water

SCI

English

First ; Corresponding

Southern University of Science and Technology[Y01296128];

Engineering ; Water Resources

Engineering, Chemical ; Water Resources

WOS:000986581400004

ELSEVIER

CHEMISTRY

2-s2.0-85142732941

Scopus

1.School of Environmental Science and Engineering,Southern University of Science and Technology (SUSTech),Shenzhen,518055,China
2.Espoo Research Center,Kemira Oyj,Espoo,Luoteisrinne 2, P.O. Box 44,FI-02271,Finland
3.Chemistry Department,College of Sciencee,King Saud University,Riyadh,11451,Saudi Arabia
4.Faculty of Science and Technology,School of Applied Physics,University Kebangsaan Malaysia,Bangi,Selangor,43600,Malaysia
5.School of Chemistry,Shoolini University,Solan,Himachal Pradesh,173229,India
6.Department of Biological and Chemical Engineering,Aarhus University,Aarhus C,Nørrebrogade 44,8000,Denmark
7.Department of Chemistry,Deshbandhu College,University of Delhi,New Delhi,110016,India

Khan，Zaheen Ullah,Moronshing，Maku,Shestakova，Marina,et al. Electro-deionization (EDI) technology for enhanced water treatment and desalination: A review[J]. DESALINATION,2023,548.

Khan，Zaheen Ullah.,Moronshing，Maku.,Shestakova，Marina.,Al-Othman，Ahmed.,Sillanpää，Mika.,...&Lei，Yang.(2023).Electro-deionization (EDI) technology for enhanced water treatment and desalination: A review.DESALINATION,548.

Khan，Zaheen Ullah,et al."Electro-deionization (EDI) technology for enhanced water treatment and desalination: A review".DESALINATION 548(2023).