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

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

研究成果: Comment/debate査読

8 被引用数 (Scopus)

抄録

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.

本文言語English
ページ(範囲)404-408
ページ数5
ジャーナルJournal of Material Cycles and Waste Management
15
3
DOI
出版ステータスPublished - 2013

ASJC Scopus subject areas

  • 廃棄物管理と処理
  • 材料力学

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