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July 8, 2026ChemSusChem

Capacitive Deionization for Brackish Water Purification Using Asymmetric Charge‐Immobilized Activated Carbon With Safe Hydrophilic Binders

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Authors

MHMd Zawad HossainASArchana SekarSRSabari Rajendran

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Overview

Randomized trial demonstrates improved brackish water purification, suggesting enhanced CDI performance.

Key Points

  • To evaluate a novel capacitive deionization approach using charge-immobilized activated carbon for brackish water purification.
  • Demonstrated immobilization of charges on activated carbon electrodes using hydrophilic binders and ionic surfactants.
  • Quantified surfactant adsorption and characterized pore structure using Brunauer-Emmett-Teller surface analysis.
  • Conducted electrochemical characterization to assess ion accessibility and CDI performance over 50 cycles.
  • Achieved a high average salt adsorption capacity of 14.6 mg NaCl/g AC film under constant current mode.
  • Improved stability and charge efficiency of electrodes with immobilized ionic surfactants compared to bare AC films.
  • Enabled ion desorption through an inverted voltage bias, enhancing the CDI process.

Cite This Study

Hossain et al. (2026) studied this question.

synapsesocial.com/papers/6a4dea28d2ea289ef6283fa3https://doi.org/10.1002/cssc.202502587
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