Relationship between the pH value of the anode solution and sodium chloride
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This post was last edited by sunjl1981 on 2013-1-6 23:21. Recently, a phenomenon was observed during the operation of ion-exchange membrane electrolyzers: as the pH value of the anode solution increased, the sodium chloride content decreased. Let’s discuss what could be the reason for this # ， ， &
The low concentration of the secondary brine causes bubbling on the membrane
An increase in pH leads to greater side reactions, which in turn increases its water content; it’s a bit implausible to think that this would cause the salt content to decrease. Is it possible that in brackish water, where the salt concentration is already low, increasing the amount of salt present could raise the pH of the anode solution?
1. The concentration of the anode solution decreases, and the amount of water migration increases； 2. When this pH rises, it is generally a phenomenon that occurs when impurities exceed the allowable levels ； 3. Alternatively, there may be pinholes in the membrane; at low concentrations, this is a common phenomenon, and the reverse migration of sodium hydroxide increases ； 4. Fortunately, there are DuPont experts available; let’s discuss it tomorrow.