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Removal of chloride from ethylene glycol solution using alumina/zeolite membrane as a physical boundary between the organic and aqueous phases

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Abstract

The permeation of Cl− ions from a NaCl/ethylene glycol (EG) solution during electrodialysis was investigated using alumina and alumina/zeolite membranes. Voltage changes had very little effect on Cl− permeation through the alumina membrane, suggesting that the driving force for the permeation was concentration-gradient-induced diffusion, and not the electric field. Solvation of the Na+ ions by EG resulted in EG migration through the membrane. Replacement of the deionized water (electrolyte) in the anodic cell with NaOH resulted in increased Cl− permeation, although a greater amount of EG migrated into the NaOH solution as well. No notable difference was observed in Cl− permeation through the alumina and alumina/zeolite membranes, but EG migration decreased when using the latter membrane, suggesting that EG migration was prevented by the zeolite layer. The proposed alumina/zeolite membrane is, hence, useful for solvent recovery by electrodialysis, but its mechanical stability must be improved for industrial applications.

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Authors and Affiliations

  1. Graduate School of Environmental Studies, Tohoku University, 6-6-07 Aoba, Aramaki, Aoba-ku, Sendai, 980-8579, Japan

    Tomohito Kameda, Chisato Shoji, Shoko Fukushima, Guido Grause & Toshiaki Yoshioka

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  1. Tomohito Kameda
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  2. Chisato Shoji
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  3. Shoko Fukushima
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  4. Guido Grause
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  5. Toshiaki Yoshioka
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Correspondence to Toshiaki Yoshioka.

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Kameda, T., Shoji, C., Fukushima, S. et al. Removal of chloride from ethylene glycol solution using alumina/zeolite membrane as a physical boundary between the organic and aqueous phases. J Mater Cycles Waste Manag 15, 404–408 (2013). https://doi.org/10.1007/s10163-013-0119-8

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  • DOI: https://doi.org/10.1007/s10163-013-0119-8

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