Separation of Weak Acids and Bases by Neutralization Dialysis

Hideo Tanabe; Hiroshi Okochi; Manabu Igawa

doi:10.1021/ie00046a028

Separation of Weak Acids and Bases by Neutralization Dialysis

Hideo Tanabe, Hiroshi Okochi, Manabu Igawa^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

15 Citations (Scopus)

Abstract

Neutralization dialysis is a deionization method based on a Donnan dialysis. Weak acids and bases, even urea and alcohols, were also removed by this method, and their transport rates increased with the decrease of their dissociation constants and with the increase of the concentrations of acid and base solutions in the neutralization system. Aqueous silica, which is a typical inorganic weak acid and abundant in surface water, was also effectively removed by this method. Therefore, tap water was effectively deionized to be pure water with a resistivity of 15 MΩ cm and a silica concentration of less than 10 ppb as SiO₂ and the neutralization dialysis was proven to be an effective deionization method.

Original language	English
Pages (from-to)	2450-2454
Number of pages	5
Journal	Industrial and Engineering Chemistry Research
Volume	34
Issue number	7
DOIs	https://doi.org/10.1021/ie00046a028
Publication status	Published - 1995 Jul 1
Externally published	Yes

ASJC Scopus subject areas

Chemistry(all)
Chemical Engineering(all)
Industrial and Manufacturing Engineering

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abstract = "Neutralization dialysis is a deionization method based on a Donnan dialysis. Weak acids and bases, even urea and alcohols, were also removed by this method, and their transport rates increased with the decrease of their dissociation constants and with the increase of the concentrations of acid and base solutions in the neutralization system. Aqueous silica, which is a typical inorganic weak acid and abundant in surface water, was also effectively removed by this method. Therefore, tap water was effectively deionized to be pure water with a resistivity of 15 MΩ cm and a silica concentration of less than 10 ppb as SiO2 and the neutralization dialysis was proven to be an effective deionization method.",

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AU - Igawa, Manabu

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N2 - Neutralization dialysis is a deionization method based on a Donnan dialysis. Weak acids and bases, even urea and alcohols, were also removed by this method, and their transport rates increased with the decrease of their dissociation constants and with the increase of the concentrations of acid and base solutions in the neutralization system. Aqueous silica, which is a typical inorganic weak acid and abundant in surface water, was also effectively removed by this method. Therefore, tap water was effectively deionized to be pure water with a resistivity of 15 MΩ cm and a silica concentration of less than 10 ppb as SiO2 and the neutralization dialysis was proven to be an effective deionization method.

AB - Neutralization dialysis is a deionization method based on a Donnan dialysis. Weak acids and bases, even urea and alcohols, were also removed by this method, and their transport rates increased with the decrease of their dissociation constants and with the increase of the concentrations of acid and base solutions in the neutralization system. Aqueous silica, which is a typical inorganic weak acid and abundant in surface water, was also effectively removed by this method. Therefore, tap water was effectively deionized to be pure water with a resistivity of 15 MΩ cm and a silica concentration of less than 10 ppb as SiO2 and the neutralization dialysis was proven to be an effective deionization method.

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Separation of Weak Acids and Bases by Neutralization Dialysis

Abstract

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